Alkylation of diarylamines with olefins using rare earth modifie

Details Alkylation of diarylamines with olefins using rare earth modifie Alkylation of diarylamines with olefins using rare earth modifie

1991-12-12

1993-05-25

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

502 68, C07C20960

Patent

active

052142116

ABSTRACT:
Rare earth pillared clays, and especially cerium and lanthanum aluminum chlorohydrite pillared clays, are quite effective catalysts in the alkylation of diaryl amines at temperatures in the range of 100.degree.-225.degree. C. The catalysts effect alkylation using olefins as the alkylating agent with high conversion and with minimal cracking of either the olefin or the alkylated product. Catalysts may be regenerated by heating in air at temperatures of at least about 550.degree.-600.degree. C. Water in small amounts also modifies the reaction to further reduce cracking although it also reduces the activity of the catalyst.

REFERENCES:
patent: 4163757 (1979-08-01), D'Sidocky
patent: 4952544 (1990-08-01), McCauley
patent: 4957889 (1990-09-01), McCauley

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