Cobalt carbide-based catalyst for direct preparation of olefin from synthesis gas, preparation method therefor and application thereof

US11154844B2 · kind B2 · utility

Assignees

• SHANGHAI ADVANCED RESEARCH INSTITUTE, CHINESE ACADEMY OF SCIENCES · CN
• SHANXI LUAN ENVIRONMENTAL ENERGY DEVELOPMENT CO., LTD. · CN

Inventors

• Zhengjia Li · Shanghai, CN
• Liangshu Zhong · Shanghai, CN
• Yuhan Sun · Shanghai, CN
• Fei Yu · 红钢城街道, CN
• Yunlei An · Shanghai, CN
• Xingzhen Qi · Shanghai, CN
• Tiejun Lin · Sichuan, CN
• Yaning Xiao · Shanghai, CN
• Bin Liu · Fishers, US
• Dongfei Wang · Beijing, CN

Key dates

• Filing date: Sep 29, 2016
• Grant date: Oct 26, 2021
• Expiry date: Oct 5, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A cobalt carbide-based catalyst for direct production of olefin from synthesis gas, a preparation method therefor and application thereof are disclosed. The method for preparing the catalyst comprises the following steps: 1) mixing a cobalt source with water, or mixing a cobalt source, an electron promoter and water to obtain a first solution; and mixing a precipitant with water to obtain a second solution; 2) adding the first solution and the second solution to water, or water and a structure promoter for precipitation, crystallizing, separating, drying and calcination; and 3) reducing a solid obtained in Step 2) in a reducing atmosphere, and then carbonizing in a carbonizing atmosphere. The prepared catalyst has high activity and high selectivity to olefins for direct production of olefins via syngas conversion.