一种费托合成复合催化剂及其制备方法
By designing a three-layer composite catalyst, with a cobalt-based Fischer-Tropsch synthesis catalyst in the core, an alkane cracking catalyst in the middle layer, and an isomerization catalyst in the outer layer, the problem of low selectivity of aviation kerosene caused by the distribution of ASF in the traditional Fischer-Tropsch synthesis reaction was solved, and the preparation of C8-C16 fractions with high selectivity was achieved, thereby improving the reaction conversion rate and catalytic performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF COAL CHEM CHINESE ACAD OF SCI
- Filing Date
- 2024-03-04
- Publication Date
- 2026-07-17
AI Technical Summary
The ASF distribution in traditional Fischer-Tropsch synthesis results in low selectivity for aviation kerosene, making industrial production difficult.
A three-layer composite catalyst is used, with a cobalt-based Fischer-Tropsch synthesis catalyst in the core, an alkane cracking catalyst in the middle layer, and an isomerization catalyst in the outer layer. By optimizing the structure and composition of the catalyst, a one-step catalytic synthesis gas process with high selectivity to produce C8-C16 fractions is achieved.
It improved the reaction conversion rate and target product selectivity of the catalyst, especially the selectivity of aviation kerosene, reduced the selectivity of methane, and enhanced the mechanical strength and hydrothermal stability of the catalyst.