“From my close observation of writers...they fall into two groups: 1) those who bleed copiously and visibly at any bad review, and 2) those who bleed copiously and secretly at any bad review.” -- Isaac Asimov (Russian born American science-fiction Writer and Biochemist. 1920-1992)
I really like technology reviews. A good review saves time in so many ways. It explains where the technology came from and where it’s going. It describes the challenges being addressed by current researchers. And it names key researchers and their key works.
Catalyss Reviews: Science and Engineering, true to its name, is a great source of reviews. Since catalysis is the focus, and since catalysis lies at the heart of desulfurization, you could do worse than reviewing this review on a regular basis.
Here is an excerpt from a recent 122 page article ...
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Catalysis Reviews: Science and Engineering, 52:204–324, 2010
Copyright © Taylor & Francis Group, LLC
ISSN: 0161-4940 print / 1520-5703 online
DOI: 10.1080/01614941003720167
Kinetics and Modeling of Petroleum Residues Hydroprocessing
Abdulazem Marafi1, Antony Stanislaus1, and Edward Furimsky2
1Petroleum Refining Department, Petroleum Research and Study Center, Kuwait Institute for Scientific Research, Safat, Kuwait
2IMAF Group, Ottawa, Ontario, Canada
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“2.3. Effect of Feed Origin and Analysis
“The detailed characterization of residues and corresponding products is necessary in order to quantify changes occurring during hydroprocessing. In most cases, the removal of heteroatoms (e.g., sulfur, nitrogen, and oxygen), metals (vanadium and nickel) and some hydrocarbon groups from the feed have been the objectives of kinetic measurements. For residues, the overall conversion of asphaltenes and resins as well as CCR, with time on stream has been quantified. Complex nature of residues requires the advanced analytical techniques for a more detailed characterization.”
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“3.2. Kinetics Involving Residues
“The products containing no resins, asphaltenes, and metals is an ultimate goal of hydroprocessing of petroleum residues (1–10). In addition, the content of other contaminants in products (e.g., sulfur and nitrogen) must be below regulatory limits. A desirable performance of fuels and lubricants requires a suitable distribution of hydrocarbon groups. Therefore, the kinetic studies involving distillation residues and heavy crudes focus on conversion of resins and asphaltenes to lighter fractions as well as on removal of metals, sulfur and nitrogen. The quality of final products may only be attained after employing several hydroprocessing stages. The number of upgrading stages increases with the increasing content of contaminants. With respect to the overall hydroprocessing, every stage must be described by a different set of kinetic data rather than using the same set of data for all stages.”
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