METHOD FOR PRODUCING ACRYLONITRILE

摘要

The invention relates to a method for producing acrylonitrile which includes a vapor phase catalytic ammoxidation process of performing vapor phase catalytic ammoxidation by bringing a source gas containing propylene, molecular oxygen, and ammonia into contact with a fluidized bed catalyst to obtain acrylonitrile. The method is characterized in that the fluidized bed catalyst is a catalyst containing molybdenum and bismuth and the vapor phase catalytic ammoxidation process is performed while maintaining an adsorbed amount of ammonia per specific surface area (m2/g) of the fluidized bed catalyst in the range of 0.05 to 0.6 μmol/m2. According to the method for producing acrylonitrile of the invention, it is possible to stably maintain a high acrylonitrile yield over a long period of time.

主权项

1. A method for producing acrylonitrile, the method comprising
performing vapor phase catalytic ammoxidation by bringing a source gas comprising propylene, molecular oxygen, and ammonia into contact with a fluidized bed catalyst thereby obtaining acrylonitrile, wherein the fluidized bed catalyst comprises molybdenum and bismuth, and the vapor phase catalytic ammoxidation is performed while maintaining an adsorbed amount of ammonia per specific surface area (m2/g) of the fluidized bed catalyst in the range of from 0.05 to 0.6 μmol/m2.