The Standard Oil Company

Joseph P Padolewski

James Frank Brazdil, Jr

Fernando A Cavalcanti

The invention is a method for the reduction of ammonia breakthrough during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propane and isobutane; ammonia and an oxygen-containing gas into a lower portion of a fluid-bed reactor containing an ammoxidation catalyst to react in the presence of said catalyst to produce acrylonitrile. The method comprises introducing into the reactor at least one C,to C,olefin which will react with at least a portion of the unreacted ammonia and oxygen present in the reactor to substantially reduce the amount of ammonia present in the reactor effluent exiting the reactor.

Amelioration of ammonia breakthrough in an alkane ammoxidation process

A method of making a promoted vanadium antimony oxide catalyst comprising reacting a monoperoxovanadium ion while in aqueous solution with the antimony compound wherein the improvement comprises adding the antimony compound to the aqueous slurry in at least two steps.

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Akron, OH, United States of America

Joseph P Padolewski