Catalysts for preparation of butadiene by oxydehydrogenation of butene in fluidized bed reactor and method of preparing same and use of same

US9764317B2 · kind B2 · utility

Assignee

• SHANGHAI BI KE CLEAN ENERGY TECHNOLOGY CO., LTD. · CN

Inventors

• Guo Rui · Shanghai, CN
• Yongsheng Gan · Shanghai, CN
• Simon X. Zhang · Peachtree City, US
• Yanning Luo · Shanghai, CN

Key dates

• Filing date: Jul 11, 2013
• Grant date: Sep 19, 2017
• Expiry date: Nov 24, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/889
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a catalyst for preparation of butadiene by oxydehydrogenation of butene in a fluidized bed reactor, a method of preparing the same, and use of the same, wherein a method according to an embodiment of the invention comprises: reacting a metal precursor with an alkaline substance to obtain a slurry containing insoluble compound, followed by filtering and washing the slurry; adding a binder and deionized water, followed by agitation to regulate the solid content of the slurry to 10-50%; subjecting the slurry to spray drying granulation, wherein the temperature at the feed port is controlled between 200-400° C., and the temperature at the discharge port is controlled between 100-160° C., to obtain catalyst microspheres; and drying the catalyst microspheres at 80-200° C. for 1-24 h, and then calcining the catalyst microspheres at 500-900° C. for 4-24 h to obtain a catalyst having a general formula of FeXaYbZcOd, comprising Fe, Mg, Zn, Bi, Mo, Mn, Ni, Co, Ba, Ca, and other metals. The catalyst microspheres prepared according to the exemplary method exhibit high mobility, desirable particle size distribution, extremely high mechanical strength and catalytic activi…