一种用于二氧化碳加氢制备低碳烃类的催化剂及其制备方法和应用
By using a 3D conductive foam metal support and a Co3O4@nickel-iron composite oxide catalyst in the carbon dioxide hydrogenation reaction, combined with Na or K promoters, a core-shell structured nanocatalyst was constructed, which solved the problems of insufficient catalyst conversion and selectivity, and achieved the effect of efficient preparation of low-carbon hydrocarbons.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEIFANG BENZO CHEM CO LTD
- Filing Date
- 2024-02-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing catalysts exhibit low conversion rates, poor selectivity, and unsatisfactory stability in the process of preparing low-carbon hydrocarbons by carbon dioxide hydrogenation. They are also prone to deactivation due to carbon deposition, making it difficult to achieve efficient preparation of C2-C4 hydrocarbons.
Using 3D conductive foam metal as a carrier, Co3O4@nickel-iron composite oxide as the main catalyst, and Na or K as an auxiliary agent, a core-shell structured nanocatalyst is constructed through hydrothermal and calcination methods to form a unique electronic interface and porous structure, thereby improving the utilization rate and stability of active sites.
It achieved a CO2 conversion rate of over 45%, a low-carbon hydrocarbon selectivity of over 40%, a CO and CH4 selectivity of less than 10%, and a catalyst lifetime of over 500 hours, demonstrating high activity and stability.
Smart Images
Figure CN118022749B_ABST