Chemistry of hydrocarbon compounds – Aromatic compound synthesis – Having alkenyl moiety – e.g. – styrene – etc.
Reexamination Certificate
2011-06-21
2011-06-21
Dang, Thuan Dinh (Department: 1771)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
Having alkenyl moiety, e.g., styrene, etc.
C585S440000
Reexamination Certificate
active
07964765
ABSTRACT:
Processes are provided for the production of styrene monomer by oxidative dehydrogenation of EB using CO2as a soft oxidant. Carbon dioxide is used as the reaction diluent in one or more dehydrogenation reactors and to supply the heat required for the endothermic reaction of EB to styrene monomer. In the dehydrogenation reactors, two parallel reactions for styrene monomer formation occur simultaneously: (1) direct EB dehydrogenation to styrene monomer over a catalyst using heat provided by the carbon dioxide, and (2) oxidative dehydrogenation of EB with carbon dioxide to form styrene monomer.
REFERENCES:
patent: 4021500 (1977-05-01), Rogers
patent: 4788371 (1988-11-01), Imai et al.
patent: 5053572 (1991-10-01), Kim et al.
patent: 5324702 (1994-06-01), Yoo et al.
patent: 6034032 (2000-03-01), Park et al.
patent: 6037511 (2000-03-01), Park et al.
patent: 6958427 (2005-10-01), Park et al.
patent: 2003/0166984 (2003-09-01), Park et al.
patent: 2004/0181083 (2004-09-01), Proll et al.
patent: 2007/0225532 (2007-09-01), Tonkovich et al.
patent: 2008/0097133 (2008-04-01), Crone et al.
patent: 482276 (1992-04-01), None
patent: 2002265396 (2002-09-01), None
Notification Concerning Transmittal of International Preliminary Report on Patentability issued Dec. 18, 2010 by the International Bureau of WIPO in corresponding PCT Application No. PCT/US2009/047195 (8 pages).
International Search Report, Jul. 17, 2009.
J. Matsui, T. Sodesawa, F. Nozaki, “Influence of carbon dioxide addition upon decay of activity of a potassium-promoted iron oxide . . . ” Applied Catalysis (1991), 67(2), 179-88.
S. Wang, Z.H. Zhu, “Catalytic Conversion of Alkanes and Olefins by Carbon Dioxide Oxidative Dehydrogenation . . . ”, Energy and Fuels 18(2004), 1126-1139.
M.C. Chon, “Transformation of the old process: ethylbenzene to styrene with CO2 dilution”, presentation at CHEMRAWN XVI Conference, (2003) Ottawa, Canada.
Sang-Eon Park, Jin S. Yoo, “New CO2 chenistry—Recent advances in utilizing CO2 as an oxidant and current understanding . . . ”, Stud. Surf. Sci. Catal. 153 (2004), 303-314.
Naoki Mimura, Masahiro Saito, “Dehydrogenation of ethylbenzene to styrene over Fe2O3/Al2O3 catalysts in the presence of carbon dioxide”, Catalysis Today 55 (2000), 173-178.
Do-Young Hong, et al., “Effect of carbon dioxide as oxidant in dehydrogenation of ethylbenzene to styrene over alumina-supported vanadium . . . ” Catalysis Today 112(2006), 86-88.
Yoshihiko Ohishi, et al., “Dehydrogenation of ethylbenzene with CO2 over Cr-MCM-41 catalyst”, J. Mol. Catal. A: Chemical 230 (2005), 49-58.
I.P. Belomestnykh, et al., “New preparation methods of multicomponent vanadium oxide . . . ”, Stud. Surf. Sci. Catal. (1992), 72 (New Dev. Sel. Oxid. Heterog. Catal.), 453-60.
F. Cavani, F. Trifiro, “Alternative processes for the production of styrene”, Applied Catalysis A: General 133 (1995), 219-239.
Schwint Kevin J.
Wilcox Richard J.
Dang Thuan Dinh
Lummus Technology Inc.
Osha • Liang LLP
LandOfFree
Styrene monomer process based on oxidative dehydrogenation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Styrene monomer process based on oxidative dehydrogenation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Styrene monomer process based on oxidative dehydrogenation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2737393