Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Inorganic carbon containing
Patent
1994-07-21
1996-01-09
Gibson, Sharon A.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Inorganic carbon containing
564474, 564479, B41J 2118
Patent
active
054829097
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.
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Brake Loren D.
Foley Henry C.
Lafyatis Davis S.
Mariwala Ravindra K.
Sonnichsen George C.
E. I. Du Pont de Nemours & Co., (Inc.)
Gibson Sharon A.
Meeks Timothy H.
University of Delaware
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