Catalysis of Zeolites in Dehydrative Amination of Ethanol with Ammonia

Abstract

Abstract: The dehydrative amination of ethyl alcohol with ammonia was studied over some zeolites at a temperature of 300-400℃ under ambient pressures. Infrared spectrometry and temperature programmed desorption have been used to characterize the acidic properties of zeolites. It is found that the formation of diethylamine(DEA) and triethylamine(TEA) were suppressed with reducing the dimensions of pore openings and channels of zeolites; proton or alkali-metal ion-exchanged ZSM-5 show considerable shape-selectivity. Besides, the conversion of ethanol have been found to be dependent on the amount of surface acid sites on zeolites. The Lewis acid sites on zeolites perhaps are major active sites for the dehydrative amination reaction. The Bronsted acid sites on zeolites seems to favour the by-reaction.

Key words: Zeolite, Dehydrative amination, Surface acid, Catalysis

TrendMD:

Hu Ying, Jiang Dazhen, Lu Huijuan, Dai Jizhou, Fan Shuguang . Catalysis of Zeolites in Dehydrative Amination of Ethanol with Ammonia[J]. Chem. J. Chinese Universities, 1989, 10(5): 501.

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Catalysis of Zeolites in Dehydrative Amination of Ethanol with Ammonia

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