| abstract |
The present invention relates to a catalyst for the production of butadiene prepared by oxydehydrogenation of butene used in a fluidized bed reactor, a process for its preparation and its use, which comprises: reacting a metal precursor with a basic substance to form a slurry containing an insoluble compound Obtaining, filtering and washing; Adding a pressure-sensitive adhesive, deionized water, and stirring to adjust the slurry solid content to 10% to 50%; Controlling the temperature of the inlet port to 200 ° C to 400 ° C and the temperature of the outlet port to 100 ° C to 160 ° C through spray drying and assembly to obtain a catalyst microsphere; Mg, Zn, Bi, Mo, Mn, Ni, Co, Ba, Ca, etc., by baking at 500 to 900 ° C for 4 to 24 hours, To obtain a catalyst represented by the general formula FeX a Y b Z c O d . The catalyst obtained in the present invention has a high particle fluidity, a suitable particle size distribution, high mechanical strength and catalytic activity, and is suitable for the industrial production of butadiene by oxydehydrogenation of butene in the fluidized phase. The catalyst is used for the production of butadiene by oxydehydrogenation of butene, the yield of butadiene is 76% to 86%, and the selectivity of butadiene is 94% to 97%. |