Chemistry: fischer-tropsch processes; or purification or recover – With preliminary reaction to form hydrogen or a carbon oxide – Water utilized in the preliminary reaction
Reexamination Certificate
2011-03-15
2011-03-15
Keys, Rosalynd (Department: 1621)
Chemistry: fischer-tropsch processes; or purification or recover
With preliminary reaction to form hydrogen or a carbon oxide
Water utilized in the preliminary reaction
Reexamination Certificate
active
07906559
ABSTRACT:
The invention discloses a method of converting carbon dioxide to methanol and/or dimethyl ether using any methane source or natural gas consisting of a combination of steam and dry reforming, in a specific ratio to produce a 2:1 molar ratio of hydrogen and carbon monoxide with subsequent conversion of the CO and H2mixture exclusively to methanol and/or dimethyl ether. This method is termed the BI-REFORMING™ process. Dehydrating formed methanol allows producing dimethyl ether (DME) using any suitable catalytic method, including use of solid acid catalysts. When recycling formed water into the bi-reforming step the conversion of carbon dioxide with methane produces exclusively dimethyl ether without any by-product formation and complete utilization of hydrogen.
REFERENCES:
patent: 3993457 (1976-11-01), Cahn et al.
patent: 4093029 (1978-06-01), Weisz et al.
patent: 4395495 (1983-07-01), Cummings
patent: 4640766 (1987-02-01), Post et al.
patent: 5599638 (1997-02-01), Surampudi et al.
patent: 0 159 759 (1985-10-01), None
patent: 1 545 329 (1979-05-01), None
patent: WO 2006/113294 (2006-10-01), None
patent: WO 2007/014487 (2007-02-01), None
International Search Reports for PCT/US2008/067462, Sep. 2008.
International Search Report and the Written Opinion of the International Searching Authority, application No. PCT/US2008/067480, dated Oct. 1, 2008.
Olah George A.
Prakash G. K. Surya
Keys Rosalynd
University of Southern California
Winston & Strawn LLP
LandOfFree
Conversion of carbon dioxide to methanol and/or dimethyl... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conversion of carbon dioxide to methanol and/or dimethyl..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of carbon dioxide to methanol and/or dimethyl... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2722418