Monday, March 22, 2010

Collecting Keys

“If everything seems under control, you're just not going fast enough.” -- Mario Andretti (Italian born American Race driver. b.1940)
In my garage is a box of old keys that my wife and I have collected over the years in the belief that they must go to some lock or other and that if we throw one of them away we will regret it.
I also collect key words … but they have proven to be more useful. Every three or four months I go through the list and Google® them, adding the current year to the search string. The searches still dredge a number of irrelevant results, but sifting the list usually produces some useful nuggets.

Here are three examples …
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Google Search String:
Conversion extraction desulfurization 2010


Oxidative Desulfurization of Aromatic Sulfur Compounds over Titanosilicates
Guohua Gao, Prof. *, Shifu Cheng, Ying An, Xiaojuan Si, Xianlei Fu, Yueming Liu, Haijiao Zhang, Peng Wu, Ming-Yuan He
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Rd., Shanghai 200062 (P.R. China), Fax: (+86) 21-62233323
email: Guohua Gao (ghgao@chem.ecnu.edu.cn)
*Correspondence to Guohua Gao, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Rd., Shanghai 200062 (P.R. China), Fax: (+86) 21-62233323
Funded by:
State Key Laboratory of Heavy Oil Processing
China University of Petroleum
973 Project; Grant Number: 2006CB202508
Shanghai Leading Academic Discipline Project; Grant Number: B409
Keywords
desulfurization • oxidation • silicates • thiophenes • titanium

Abstract
The application of several titanosilicates to the oxidation of aromatic sulfur compounds such as thiophene, benzothiophene, dibenzothiophene, and 4,6-dimethyldibenzothiophene with H2O2 under mild conditions is reported. Superior to other titanosilicates, Ti-MWW demonstrates a higher activity for the oxidation of 4,6-dimethyldibenzothiophene owing to the unique pore structure of the MWW topology. The effects of solvent, temperature, catalyst amount, and H2O2/S ratio on the oxidation of 4,6-dimethyldibenzothiophene over this catalyst are studied in detail. The catalyst is also applied to the oxidative desulfurization of commercial diesel. The sulfur compounds in the commercial diesel were oxidized to the corresponding sulfones, which could be readily extracted by acetonitrile, resulting in a maximum sulfur removal of 88 %

source: http://www3.interscience.wiley.com/journal/123276443/abstract?CRETRY=1&SRETRY=0
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Google Search String:
“oxidative desulfurization” 2010

Journal of Chemical Technology & Biotechnology
Received: 30 November 2009; Revised: 12 January 2010; Accepted: 16 January 2010
Published Online: 9 Mar 2010
Review
Oxidative processes of desulfurization of liquid fuelsJ.M. Campos-Martin *, M.C. Capel-Sanchez, P. Perez-Presas, J.L.G. Fierro
Instituto de Catálisis y Petroleoquímica, CSIC, Marie Curie 2, Cantoblanco, E-28049 Madrid, Spain. http://www.icp.csic.es/eac/
email: J.M. Campos-Martin (j.m.campos@icp.csic.es)
*Correspondence to J.M. Campos-Martin, Instituto de Catálisis y Petroleoquímica, CSIC, Marie Curie 2, Cantoblanco, E-28049 Madrid, Spain.
Keywords
oxidative desulfurization • biodesulfurization • liquid phase • catalysis • clean fuels • selective oxidation

Abstract
Environmental concerns have introduced a need to remove sulfur-containing compounds from light oil. As oxidative desulfurization is conducted under very mild reaction conditions, much attention has recently been devoted to this process. In this contribution, the developments in selective removal of organosulfur compounds present in liquid fuels via oxidative desulfurization, including both chemical oxidation and biodesulfurization, are reviewed. At the end of each section, a brief account of the research directions needed in this field is also included. Copyright © 2010 Society of Chemical Industry

source: http://www3.interscience.wiley.com/journal/123308749/abstract
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Google Search String:
“Adsorptive desulfurization” 2010

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesisJournal SCIENCE CHINA Chemistry
Publisher Science China Press, co-published with Springer
ISSN 1674-7291 (Print) 1869-1870 (Online)
Issue Volume 53, Number 1 / January, 2010
Pages 281-286
Ke Tang1, Xin Hong1 , YongHua Zhang1, LiJuan Song2 and ZhaoLin Sun2
(1) School of Material and Chemical Engineering, Liaoning Institute of Technology, Jinzhou, 121001, China
(2) College of Petrochemical Engineering, Liaoning University of Petroleum & Chemical Technology, Fushun, 113001, China

Abstract
Gallium atoms have been introduced into the framework of Y zeolite by treating the zeolite with an aqueous solution of ammonium hexafluoro gallate. Desulfurization of various model fuels containing about 500 μg/g sulfur has been studied over the synthesized Y zeolite ([Ga]AlY). The sulfur adsorption capacity is 7.0, 17.4, 14.5, 16.9, 6.9 and 5.8 mg(S)/g adsorbent for thiophene, tetrahydrothiophene (THT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), dibenzophiophene (DBT), benzothiophene (BT) and 4-methyldibenzothiophene (4-MDBT), respectively. The charges on the S atom in thiophene, THT, 4,6-DMDBT, DBT, BT and 4-MDBT, calculated using the density functional theory (DFT), are −0.159, −0.298, −0.214, −0.211, −0.193 and −0.188, respectively, implying that the S-M bond between the adsorption sites and thiophene is much weaker than that between the adsorption sites and THT, 4,6-DMDBT or DBT. The sulfur removal of FCC gasoline on [Ga]AlY is 68%.
Keywords isomorphous substitution - DFT - model fuels - adsorptive desulfurization

source: http://www.springerlink.com/content/76n15r0813560275/
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Sunday, March 21, 2010

That’s Heavy, Man … Bitumen & Very Heavy Crude Upgrading Technology

“This administration is going to be cussed and discussed for years to come.” -- Harry S Truman (American 33rd President of the United States, 1884-1972)

This is a report worth reading, especially if you are designing or administering a research program.

Bitumen & Very Heavy Crude Upgrading Technology-A Review Of Long Term R&D Opportunities

“The Focus of this Review: This review has focused on the identification of emerging and developing technologies that can, when fully developed, either be applied directly to upgrade bitumen and very heavy crudes, or are integral to new approaches to upgrading. Although very heavy crudes do not have the same reserve potential as the oil sands … they are included in this report as they might also gain from upgrading to lighter crudes using similar upgrading technology.”

The report examines R&D needs in a detailed and comprehensive manner. For example, it mentions the need to consider how to handle the sulfur that is produced as a consequence of increased desulfurization activity. To quote …

“Bitumen contains on average close to 5% by weight sulphur. The removal of sulphur (desulphurization) occurs through various upgrading processes, and is recovered via hydrogen sulphide gas scrubbing. Recovered sulphur is either stockpiled or shipped to markets, but the land-locked location of much of the oil sands industry makes this difficult, with the current worldwide glut in sulphur, and consequent low prices at the closest western export port, Vancouver … New technologies to use the sulphur by-product in non-traditional ways, such as in cement, sulphur enhanced road asphalt, as well as growing agricultural soil nutrient demand growth all offer ways to mitigate the world supply-demand imbalance in the log term.”

The section labeled TECHNOLOGY DEVELOPMENT NEEDS IN BITUMEN & HEAVY CRUDE UPGRADNG states …

“The main intent in this study is to identify areas for pre-competitive (basic and early applied research) that should be the main focus for government-industry jointly funded R&D. This is expected to cover a wide variety of technology options, at the scouting level, where technical or scientific uncertainty is also higher.”

The report was produced in 2004, a long time ago in the technology arena. But the goals identified in the report are so well organized that it is still worth the time required to browse its contents.

View the full text of the report at:
www.ptac.org/links/dl/osdfnlreport.pdf

Pass this on to your colleagues … and let them know about the Desulfurization Blog (http://www.desulf.blogspot.com/)

Saturday, March 20, 2010

Arabic Web Searching for the Rest of Us

Avoid the company of a liar. And if you can't avoid him, don't believe him (Arabic Proverb)
source:
http://en.wikiquote.org/wiki/Arabic_proverbs
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Languages fascinate me, as I’ve mentioned in previous posts. Sad, really, since I have no natural ability in this area of interest. Still, when I run across a Web like Onkosh.com (www.onkosh.com) , I can’t help but share it, even if it does not bear directly on desulfurization technology. This can be a useful site to explore for news that might pertain to developments in the oil business … and that’s no lie.

Description from the Onkosh Web …

Onkosh is the search portal for the Arabic web. Anything in Arabic on the web, we've got it. Anything Arabic-related in English or French on the web, we've got it.

Onkosh.com understands the Arabic language and utilizes advanced Natural Language Processing (NLP) techniques to ensure that you receive the best results for your search query. We don't just say that, we mean it.

Onkosh Web Search – Search the web for Arabic and Arabic-related sites.
Onkosh Image Search - Search images on the web for Arabic and Arabic-related sites.
Onkosh Blog Search – Everybody's talking blogs in the Arab world these days, and we're listening. View the most popular blog posts and search through thousands of blogs.
Onkosh News Search – A world quality service from Onkosh.com that specializes in aggregating all the recent news from different Arabic sources. Whenever an article is published, within a few minutes it will appear and be searchable on Onkosh. This service offers the unique functionality of grouping the similar articles together along with on-the-fly classification of the articles.
Onkosh Forum Search – Search millions of posts in several Arabic or Arabic-related forums. With this specialized search from Onkosh, the results take you to the exact forum post that is relevant to your search query, not just the URL of the forum page.
Onkosh File Search – Search for music files, mp3s, music videos, applications and other files that users are sharing on Arabic Forums and listed on Arabic music sites. With Onkosh File Search the latest files are always just a click away.
Onkosh Directory – View and search the Arabic Open Directory listing, a categorized and comprehensive listing of Arabic sites on the web.
Onkosh Thanaweya Amma results – Exclusively on Onkosh, View and search Thanaweya Amma results by Name.
Onkosh Sudoku – Play and Practice Sudoku at three different levels
Onkosh Bel-3araby – Search for Arabic using English characters and popular character replacements like "3" for "ع" and "7" for "ح". Give it a try.
We have a very exciting roadmap ahead, so continue to stay tuned for all the great features that Onkosh.com will be adding over the coming period.

Onkosh is an Orascom Telecom product.

source: http://www.onkosh.com/en/about/

Thursday, March 18, 2010

Heavy Oil Info from Schlumberger

"Chance is always powerful. Let your hook be always cast; in the pool where you least expect it, there will be a fish" -- Ovid (Roman poet, 43 BCE – 17 or 18 CE)

Most vendor sponsored blogs are little more than infomercials, but occasionally a chance encounter makes the life of an information beachcomber like me seem worthwhile.

The Heavy Oil Info (http://www.heavyoilinfo.com/) blog tended by Schlumberger’s Dr. Kambiz Safinya is one such find.

Here are some recent posts from the blog …

Heavy Oil Info Blog
Opinions and thoughts from Dr. Kambiz Safinya.

Modeling of complex fluid systems
The SPE paper "Modeling of Complex Fluid Systems in Gimboa Field Block 4: An Offshore Field in Angola With Biodegraded Heavy Oils" reviews the importance of understanding compositional variations in heavy oil reservoirs through geochemistry and other fluid data and analysis.

Growing scope and diversity of global heavy oil development
The March 2010 JPT Online features a variey of articles covering a range of heavy oil topics and reservoir environments.

Integration of fluid log predictions and downhole fluid analysis
An interesting case study in the application of Downhole Fluid Analysis or DFA and compositional equation of state modeling to better understand reservoir fluid compositional grading was presented at the Asia Pacific Oil and Gas Conference & Exhibition, 4-6 August 2009, Jakarta, Indonesia.

Reservoir analysis in a fractured carbonate heavy oil reservoir
This SPE paper details production logging results in Eygpt's Issaran heavy oil carbonate field and provides insight on job planning, operations, and approaches for field re-development

Heavy oil recovery techniques that reduce CO2 emissions and water consumption
Thermal heavy oil recovery techniques such as SAGD or cyclic steam injection that require the generation of steam require significant amounts of water and in turn produce large quantities of CO2. While thermal processes have proved to be the most effective and economic for heavy oil recovery, there are emerging technologies for non-thermal recovery that lower water resource requirements and reduce CO2 output.

Heavy oil sampling with wireline formation testers
Schlumberger's Peter Weinheber, presented a compelling paper on heavy oil sampling with Wireline Formation Test (WFT) tools at the recent December 2009 International Petroleum Technology Conference in Doha, Qatar.

SPE Applied Technology Workshop (ATW) on water management
At the recent SPE ATW, "Integrated Water Management: From Planning to Operations", held in Edinburgh, UK, a number of engineers reviewed the latest technologies and strategies for improved oil field water management.

Water resources management and the energy industry in Alberta, Canada
This article originally published in the Journal of Canadian Petroleum Technology explores the challenges associated with managing Alberta's water resources balancing population growth, agricultural expansion, and the consumption needs of the the heavy oil energy industry.

Water management in heavy oil
In this series of blog posts, we will explore some of the challenges and opportunities associated with water management in heavy oil production.

Source:
http://www.heavyoilinfo.com/blog-posts

Some background information on Dr. Safinya …

Kambiz Safinya is Heavy Oil Theme Director for Schlumberger. He has 28 years experience in the oil and gas industry and has held various management positions with Schlumberger in Operations, Marketing, Research and Product Development in the US, Europe, Middle East and Asia and holds more than 18 US patents. He received his PhD in Atomic Physics from Harvard University in 1979 and is a member of SPE.

Source: http://www.spe.org/events/kipce/speakers/heavyoil.html

Another blog you should follow … Jean Steinhardt’s Desulfurization Blog at http://www.desulf.blogspot.com/

Wednesday, March 17, 2010

An easy way to search for dissertations and theses

“Between repetition and forgetting, it is a marvel that a new thought ever struggles into existence” -- Mason Cooley

Keeping up can be hard to do, and I am always looking for ways to ease the process. One way is to monitor dissertations being produced by doctoral candidates. If you are part of a corporation large enough to support a library, you probably have access to Dissertation Abstracts International, a ProQuest (http://www.proquest.com/) product.

The less fortunate among you have to scrounge for other ways to access this valuable information. First stop … your local public library. I have mentioned this before, but it bears repeating … public libraries, many of them, are doing their best to provide online access to databases that individuals cannot afford to subscribe to.

My public library … Houston Public Library (http://www.houstonlibrary.org/) … for example, offers access for library card holders to FirstSearch (WorldCat), an OCLC (www.oclc.org) product.

Search WorldCat for dissertations containing the keyword “desulfurization,” for example, and you come up with a list of titles like the one that appears below.

Incidentally, I want to put in a plug for OCLC in particular, and librarianship in general. Libraries were on board with the power of computers to network information way back in 1967 …

"OCLC Online Computer Library Center, Inc. is "a nonprofit, membership, computer library service and research organization dedicated to furthering public access to the world's information and reducing the rate of rise of library costs".[1] It was incorporated on July 6, 1967 as the not-for-profit Ohio College Library Center.[2] 72,000 libraries in 86 countries and territories use OCLC services to locate, acquire, catalog, lend and preserve library materials."
source: http://en.wikipedia.org/wiki/OCLC

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WorldCat results for: kw: desulfurization and mt: deg and yr: 2008-2010
Records found: 18 (English: 16) Rank by: Number of Libraries

1. Computational fluid dynamics simulation of chemically reacting gas flows through microfibrous materials
http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Aerospace_Engineering/Dissertation/Duggirala_Ravi_35.pdf
Author: Duggirala, Ravi Kumar, 1980-; Roy, Christopher. J., Publication: Auburn, Ala., 2008
Dissertation: Thesis (Ph. D.)--Auburn University, 2008.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

2. Functional roles of conserved active site amino acids in the desulfonation reaction catalyzed by the alkanesulfonate monooxygenase from Escheria coli
http://hdl.handle.net/10415/1426
Author: Carpenter, Russell, 1979-; Ellis, Holly R., Publication: Auburn, Ala., 2008
Dissertation: Thesis (Ph. D.)--Auburn University.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

3. Oxidative desulfurization of diesel fuels /
Author: Alshahrani, Farhan Mohammed.; Green, M. L. H.,; Dilworth, John,
Publication: 2008
Dissertation: Thesis (D.Phil.)--University of Oxford, 2008.
Document: English : Book
Libraries Worldwide: 1


4. Constructed wetland treatment system an approach for mitigating risks of flue gas desulfurization waters /
http://etd.lib.clemson.edu/documents/1249066367/
Author: Eggert, Derek Anderson. Publication: 2009
Dissertation: Thesis (Ph. D.) -- Clemson University, 2009.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

5. Deep desulfurization of transportation fuels via supported ionic liquid membranes /
Author: Kindt, Richard Anthony. Publication: 2009
Dissertation: Thesis (M.S.)--University of Toledo, 2009.
Document: English : Book : Thesis/dissertation/manuscript Archival Material
Libraries Worldwide: 1

6. Oxidation of mercury during selective catalytic reduction of nitric oxide
https://www.mhsl.uab.edu/dt/2009p/tong.pdf
Author: Tong, Giang. Publication: Birmingham, Ala. : University of Alabama at Birmingham, 2009
Dissertation: Thesis (Ph. D.)--University of Alabama at Birmingham, 2009.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

7. Shi shi pai yan tuo liu zui jia cheng ben han shu zhi tan tao = Cost function for wet desulfurization of flue gas /
Author: Zhu, Guowei . Publication: 2008
Dissertation: Thesis (M.A.) -- National Taiwan University Dept. of Environmental Engineering .
Document: Chinese (Show non-Roman characters) : Book : Thesis/dissertation/manuscript Archival Material
Libraries Worldwide: 1

8. Nanopowder nickel aluminate for benzothiophene adsorption from dodecane
http://hdl.handle.net/1853/26580
Author: Berrigan, John Daniel. Publication: Atlanta, Ga. : Georgia Institute of Technology, 2008
Dissertation: Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.
Document: English (Show non-Roman characters) : Internet Resource : Thesis/dissertation/manuscript Computer File Archival Material
Libraries Worldwide: 1

9. Transition metal catalysts for hydrodesulphurization reactions applied to petroleum industry
http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515
Author: Torres Escobar, Brenda. Publication: 2009
Dissertation: Thesis (Ph. D.)--University of Texas at El Paso, 2009.
Document: English : Internet Resource : Thesis/dissertation/manuscript Computer File Archival Material
Libraries Worldwide: 1

10. Hydrodesulfurization of metallic phosphide catalysts : from base metals to noble metals /
Author: Gaudette, Amy F.; Bussell, Mark E. Publication: 2009
Dissertation: Thesis (M.S.)--Western Washington University, 2009.
Document: English : Book : Thesis/dissertation/manuscript Archival Material
Libraries Worldwide: 1

11. Sulphur removal using regenerable sorbents of rare earth/transition metal oxides
http://etd.lsu.edu/docs/available/etd-07092008-054914/
Author: Kalakota, Vikram Reddy, 1985- Publication: [Baton Rouge, La. : Louisiana State University, 2008
Dissertation: Thesis (M.S. in Ch.E.)--Louisiana State University, Baton Rouge, 2008.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

12. <>.
http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2207200821363500
Author: Chu, Kuo-Wei. Publication: 2008
Dissertation: Thesis (M.A.)--National Taiwan University Graduate Institute of environmental engineering.
Document: Chinese (Show non-Roman characters) : Internet Resource : Thesis/dissertation/manuscript Archival Material
Libraries Worldwide: 1

13. Biological sulfide oxidation by natron-alkaliphilic bacteria : application in gas desulfurization /
Author: Bosch, Pim L.F. van den.
Publication: [S.l. : s.n.], 2008
Dissertation: Proefschrift Wageningen.
Document: English : Book
Libraries Worldwide: 1

14. Biological sulfide oxidation by natron-alkaliphilic bacteria : application in gas desulfurization /
Author: Bosch, Pim L. F. van den.
Publication: [Wageningen : s.n., 2008
Dissertation: Thesis (doctoral)--Wageningen Universiteit, 2008.
Document: English : Book
Libraries Worldwide: 1

15. Mechanistic studies and practical applications of stereoselective glycosylation
Author: Li, Linfeng. Publication: 2009
Dissertation: Thesis (Ph. D.) -- Wayne State University, 2009.
Document: English : Computer File : Document
Libraries Worldwide: 1

16. Sol-gel synthesized nanomaterials for environmental applications
http://hdl.handle.net/2097/884
Author: Yang, Xiangxin. Publication: Manhattan, Kan. : Kansas State University, 2008
Dissertation: Thesis (Ph. D.)--Kansas State University, 2008.
Document: English : Internet Resource Computer File
Libraries Worldwide: 1

17. Desulphurization of liquid hydrocarbon fuel /
Author: Wong, Sin Wa. Publication: 2009
Dissertation: Thesis (M.Phil.)--; Hong Kong University of Science and Technology,; 2009.
Document: English : Book : Thesis/dissertation/manuscript Archival Material Internet Resource
Libraries Worldwide: 1

18. Sol-gel synthesized nanomaterials for environmental applications
http://hdl.handle.net/2097/884
Author: Yang, Xiangxin. Publication: Manhattan, Kan. : Kansas State University, 2008
Dissertation: Thesis (Ph. D.)--Kansas State University, 2008.
Document: English : Internet Resource Computer File

source: WorldCat
http://www.firstsearch.org/

Monday, March 15, 2010

More Than One Way to Skin a Cat: Polyoxometalate

"One of the most striking differences between a cat and a lie is that a cat has only nine lives" -- Mark Twain in Pudd'nhead Wilson

Let’s be clear … cats should not be skinned, and why you would want to know more than one way to skin one is beyond me. But the thought behind the phrase is valid … there is more than one way to solve a problem. And that includes the problem of digging out the information you need to advance your research.

When it comes to online research, keywords are extremely important. They are so important that I look for them whenever I find an article with valuable content.

Today’s tip: do what I do. Read for content … Look for key words.

Today’s key word: Polyoxometalate

Here are a couple of articles that resulted from Googling® polyoxometalate

Zinc-Substituted Polyoxometalate for Oxidative Desulfurization of Dibenzothiophene
Authors: J. Lai a; G. Luo a
Affiliation: a Department of Chemistry, Liaoning Shihua University, Liaoning, P.R. China
Published in: Petroleum Science and Technology, Volume 27, Issue 8 January 2009 , pages 781 - 787
Abstract
An oxidative desulfurization process for model compound has been studied using Na12[WZn3(H2O)2(ZnW9O34)2] • 46H2O as catalyst and 30 wt% aqueous hydrogen peroxide as the oxidizing agent. The effects of the reaction time, the reaction temperature, the amount of the oxidizing agent and the catalyst on the removal of dibenzothiophene (DBT) were investigated. The oxidated resultant was removed by extraction with polar solvent to reduce the sulfur level in the model compound. The maximum removal of DBT was up to 70%.
Keywords: desulfurization; dibenzothiophene; hydrogen peroxide; oxidative polyoxometalates
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Fuel Processing Technology
Volume 90, Issue 3, March 2009, Pages 411-414
Oxidative desulfurization of Gas oil by polyoxometalates catalysts
W. Trakarnpruka, c, , and K. Rujiraworawutb
aDepartment of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
bProgram of Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
cCenter of Excellence for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Bangkok 10330, Thailand
Abstract
Several polyoxometalates: Na2HPM12O40, H3PM12O40, Na2HPM12O40, (VO)H[PM12O40] and (n-Bu4N)3[PM12O40] (M = Mo and W) as well as (n-Bu4N)3 + x[PW12−xVxO40] (x = 0–3) were synthesized and characterized. Benzothiophene, dibenzothiophene and 4,6-dimethyl-dibenzothiophene were used as model sulfur compounds in gas oil. The oxidation reaction was performed using different polyoxometalates as catalyst and H2O2/acetic acid. The experimental results show that the W-based polyoxometalate catalysts are more active than the Mo catalysts. The oxidation reactivity of the catalysts depends on the type of countercation: Na+ > H+ > (VO)+ > (n-Bu4N)+. In a series of (n-Bu4N)3 + x [PW12−xVxO40] (x = 0–3) the order of catalytic activity is V3 > V2 > V1 > V0. The reactivity order of the sulfur compounds is: dibenzothiophene > 4,6-dimethyldibenzo-thiophene > benzothiophene. The catalytic system in this work was used for the oxidation of gas oil combined with solvent extraction to remove sulfur content in gas oil. Under mild reaction condition, high sulfur removal up to 98% can be achieved with high oil recovery (90%).


Stay tuned for future posts.
Jean Steinhardt, Principal
Jean Steinhardt Consulting LLC
www.JeanSteinhardtConsulting.com
research@JeanSteinhardtConsulting.com

LinkedIn Profile: www.linkedin.com/in/jeansteinhardtresearch
Desulfurization Blog: http://www.desulf.blogspot.com/

Sunday, March 14, 2010

Cite Sources: Research Advances In Oxidative Desulfurization Technologies For The Production Of Low Sulfur Fuel Oils

"The secret to creativity is knowing how to hide your sources." — Albert Einstein

How many times have you received a “must read” email from a colleague … only to spend several hours tryig to locate the thing?

Do your colleagues a favor … when you find something you want to share, copy the URL from the address bar at the top of your browser, and paste it into the email you send. It will save them a lot of time. And more importantly, it will make them more inclined to pay attention to your next email.

I make a point of doing this in each post to the Desulfurization Blog. For example, the following …

Research Advances In Oxidative Desulfurization Technologies For The Production Of Low Sulfur Fuel Oils
Petroleum & Coal ISSN 1337-7027
Gaofei Zhang, Fengli Yu, Rui Wang*
School of Environmental Science & Enginering, Shandong University, Jinan, 250100, China
Abstract.
The oxidative desulfurization (ODS) technology has been widely recognized as one of the most effective methods for the removal of fuel oils, due to the very mild operation conditions it requires. According to the oxidants involved, the ODS methods to date can be divided into the following categories: H2O2 oxidation method, organic oxidant method, photochemical oxidation method, as well as those involving the use of plasma or ultrasound. Status of research progress in these ODS methods was systematically reviewed, whereby the future work of importance was proposed.
Source: www.vurup.sk/pc/vol51_2009/issue3/pdf/pc_3_2009_wang_rui_030.pdf

In this case, the link takes you to the full text of the article. In most cases, the link is to the abstract of the article. Either way, your colleagues will have the information they need to find the full text of whatever you have found.

Moral … cite your sources … you’ll be glad you did.