Lignite char supported nano-cobalt composite catalyst and preparation method thereof

US11534739B2 · kind B2 · utility

Assignee

• WUHAN UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Chunxia Zhao · 红钢城街道, CN
• Feng Li · Auburn, US
• Wen-Yo Chen · 红钢城街道, CN
• Wei Jin · Hangzhou City, CN
• Yanyuan Qi · 红钢城街道, CN
• Shuang Yang · Ellicott City, US

Key dates

• Filing date: Nov 23, 2020
• Grant date: Dec 27, 2022
• Expiry date: Nov 23, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2235/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present disclosure provides a lignite char supported nano-cobalt composite catalyst and a preparation method thereof. In the method, lignite is used as a raw material, and a lignite char supported high dispersion nano-cobalt composite catalyst is obtained by a modified impregnation method followed by a high temperature pyrolysis process. The composite catalyst prepared by the present disclosure has a hierarchical pore structure, a high specific surface area, and uniformly dispersing nano-sized cobalts on the lignite char with controllable particle size, so that the obtained catalyst has an excellent catalytic activity for low-temperature CO2 methanation; moreover, the preparation process is simple and feasible, the raw materials used are cheap and easily available. Therefore, the composite catalyst is very suitable for industrial production and application.