Preparation of maleic anhydride from n-butene in a...

Details Preparation of maleic anhydride from n-butene in a... Preparation of maleic anhydride from n-butene in a...

C - Chemistry, Metallurgy

07

D

260/365.7

C07D 307/60 (2006.01) B01J 23/887 (2006.01) B01J 27/186 (2006.01) B01J 35/00 (2006.01) C07C 51/25 (2006.01)

Patent

CA 1067504

PREPARATION OF MALEIC ANHYDRIDE FROM N-BUTENE IN A ONE-RECTOR, FLUID-BED SYSTEM ABSTRACT OF THE DISCLOSURE Maleic anhydride is prepared by reacting n-butene with molecular oxygen at a temperature of about 200° to about 600°C in a fluid-bed reactor using a catalyst charge containing two dif- ferent catalysts--the first catalyst being one that is especially effective for preparing butadiene from the n-butylenes; and the second catalyst being one that is especially effective for pre- paring maleic anhydride from butadiene. Unexpectedly, substantial yields of maleic anhydride are obtained.

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