Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1993-07-30
1994-10-11
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
502182, 564474, C07C20916
Patent
active
053548930
ABSTRACT:
The present invention relates to an improved catalyst for the selective synthesis of monomethylamine (MMA) and dimethylamine (DMA) at the expense of trimethylamine (TMA) for a starting feed of methanol and/or dimethyl ether and ammonia. The current industrial catalyst for this process is a standard SiO.sub.2 /Al.sub.2 O.sub.3 material. The present invention combines this standard catalyst with microporous carbon molecular sieves (CMS) to form a composite material (i.e., a CMS/SiO.sub.2 /Al.sub.2 O.sub.3 material) with higher selectivity for the desired products MMA and DMA. The invention also relates to methods of making the improved catalyst and a process of using the improved catalyst material in the production of MMA and DMA.
REFERENCES:
patent: 2017069 (1935-10-01), Lazier
patent: 2777881 (1957-01-01), Neuworth
patent: 3384667 (1968-05-01), Hamilton
patent: 3446865 (1969-05-01), Roth et al.
patent: 4082661 (1978-04-01), Aoki et al.
patent: 4206078 (1980-06-01), Ohorodnik et al.
patent: 4370503 (1983-01-01), Brake
patent: 4398041 (1983-08-01), Cochran et al.
patent: 4471072 (1984-09-01), Leyerle et al.
patent: 4499201 (1985-02-01), Leyerle
patent: 4528281 (1985-07-01), Sutt, Jr.
patent: 4713090 (1987-12-01), Yokoe et al.
patent: 4820318 (1989-04-01), Chang et al.
patent: 4916110 (1990-04-01), Manniso
patent: 4957897 (1990-09-01), Maroldo et al.
patent: 4970189 (1990-11-01), Tachibana
patent: 5037791 (1991-08-01), Comolli et al.
patent: 5294585 (1994-03-01), Moreau et al.
Henry C. Foley, Carbon Molecular Sieves Properties and Applications in Perspective, ACS symposium series, Jun. 5-11, 1988, pp. 335-359.
Lafyatis et al. Poly (fufuryl alcohol)-Derived Carbon Molecular Sieves: Dependence of Absorptive Properties on Carbonization Temperature, Time, and Poly (ethylene glycol) Additives, Ind. Eng. Chem. Res., vol. 30, No. 5, 1991, pp. 865-873.
Brake Loren D.
Foley Henry C.
Lafyatis David S.
Mariwala Ravindra K.
Sonnichsen George C.
E. I. Du Pont de Nemours & Company, Inc.
Rand Scott C.
Raymond Richard L.
The University of Delaware
LandOfFree
CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1659883