Alkylation of aromatic amines with olefins on partially dealumin

Details Alkylation of aromatic amines with olefins on partially dealumin Alkylation of aromatic amines with olefins on partially dealumin

1988-03-22

1989-10-24

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

558418, 558419, 564307, 564309, 564315, 564330, 564409, C07C 87452

Patent

active

048763772

ABSTRACT:
This invention pertains to an improved process for the alkylation of aromatic amines. The improvement resides in the use with particular aromatic amines and olefins a catalyst which is a highly acidic partially dealuminated zeolite having an increased silica to alumina molar ratio over the original zeolite and an acidity factor of at least 0.3. The partially dealuminated zeolites are preferably exchanged with hydrogen or rare earth metal and are particularly effective for producing an alkylated aromatic amine where the alkyl group is ortho to the amine. The highly acidic partially dealuminated H-mordenite and partially dealuminated HY faujasite are very effective for the alkylation of aniline with propylene.

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