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Figure 6.2. Typical ignition delay of an alkane fuel as a function of the initial mixture s temperature. Three different kinetic models are shown (a) High temperature chemistry only that is, no peroxy radical chemistry, (b) Same as (a), but the Q OOH chain-branching channel of the peroxy radicals has been considered, (c) Same as (b), bnt the concerted elimination of RO2 to alkene + HO2 has been considered. (Figure courtesy of Timothy Barckholtz, ExxonMobil Research and Engineering.)...

We thank Dr. Timothy Barckholtz (ExxonMobil Research and Engineering) for his many thoughtful and helpful comments on this manuscript, and also for providing Figure 6.2. We extend sincere thanks to Carrigan Hayes for her help with the editing of this manuscript. 

At the Ames Laboratory this research was supported by the Department of Energy, Basic Energy Sciences, under Contract No. DE-AC02-07CH11358. The support of ExxonMobil Research and Engineering Co. is also gratefully acknowledged. 

Krishnan Sankaranarayanan received his MSc at Delft University of Technology, the Netherlands and his PhD at Princeton University, New Jersey. At Delft, he did an extensive study of the energy efficiency of the polyolefin industry, for which activity DSM acted as host. He is currently group head reactor engineering and mixing at ExxonMobil Research and Engineering, Fairfax, Virginia. 

Fig. 18.21. Fluid coking (Flexicoking)—ExxonMobil Research and Engineering Co. Includes reactor (1), scrubber (2), heater (3), gasifier (4), and coke fines (5). (Source Hydrocarbon Processing 2004 Refining Process Handbook. CD-ROM. September 2004 copyright 2004 by Gulf Publishing Co., all rights reserved.)...

MICHAEL P. RAMAGE, NAE,1 Chair, ExxonMobil Research and Engineering Company (retired), Moorestown, New Jersey... 

Bill Innes, ExxonMobil Research and Engineering Corporation, Issues Confronting Future Hydrogen Production and Use for Transportation, presentation to tiie committee, June 12, 2003. 

Texas, Austin H.M. Hubbard, Retired President and CEO, Pacific International Center for High Technology Research James Katzer, NAE, ExxonMobil Research and Engineering Company and Robert Shaw, Jr., Arete Corporation. 

Corporate Strategic Research ExxonMobil Research and Engineering Co. 

ExxonMobil Research and Engineering Co., 1545 Route 22 East, Annandale, NJ 08801, USA. e-mail wieslaw.j.roth cxxonmobil.com... 

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Exol N Solvent Extraction Technology, brochure from ExxonMobil Research and Engineering, Fairfax, Virginia. 

ExxonMobil Research and Engineering, MWI —Wax Isomerization Technology, brochure (Fairfax, VA ExxonMobil). 

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Finally, Mason et at. (ExxonMobil Research and Engineering) describe the approaches used for assay of fresh and spent reformer catalysts to determine the precious metals (platinum and rhenium) in them. Methods such as WDXRF, ICPAES, and classical wet chemistry methods are used for such analysis. Precise and accurate methods are critical for these analyses, since small errors in analysis can have a large impact in commercial transactions of these catalysts between the catalyst vendors and the oil companies. 

Advanced Research Associate, ExxonMobil Research and Engineering, Paulsboro, NJ 08066. 

ExxonMobil Research and Engineering, 1545 Route 22 East, Annandale, NJ 08801. 

Elemental speciation using mass spectrometry in conjunction with ICPAES is a latest advance in atomic spectroscopy, which is becoming popular in analytical research labs. Mason et al. ExxonMobil Research and Engineering) show how linking ICP-MS to various liquid chromatographic techniques has enabled determination of ppm levels of metals in hydrocarbons to ppb level measurements in refinery effluent streams. Hyphenated ICP-MS techniques were used to provide speciation information on nickel and vanadium in crude oils and assist in development of bioremediation options for selenium removal in wastewater treatment plants. Similar ICP-MS technique without sample demineralization was used by Lienemann, et al. Institut Francais du Petrole) to determine the trace and ultra-trace amounts of metals in crude oils and fractions. 

The authors gratefully acknowledge financial support from ExxonMobil Research and Engineering, Mobil Technology, Brigham Young University and technical assistance by Jenny Case, Daniel M. Bennett, John Hedengren, and Ethan A. Mastny. 

The Symposium is also indebted to ExxonMobil Research and Engineering and BP for their financial support. We also appreciate the time that these sponsors have provided for their staff on the Scientific Committee. 

Chemical and Biomedical Engineering, Cornell University, Ithaca, NY 14853-5201 ExxonMobil Research and Engineering Company, Annandale, NJ 08801 -0998 Materials Science and Engineering, Penn State University, University Park, PA 16802... 

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