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 ///////
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
ReviewOxidative 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 ///////
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/ ///////