Conversion of syngas to hydrocarbons using bifunctional cobalt catalysts containing HZSM-5 zeolites of various porous structures

被引：0
|
作者：
O. P. Papeta [1 ]
I. N. Zubkov [1 ]
V. M. Chernyshev [1 ]
D. V. Chernysheva [1 ]
E. M. Bayan [1 ]
A. P. Savost’yanov [2 ]
A. N. Saliev [1 ]
M. R. Agliullin [1 ]
R. E. Yakovenko [1 ]
机构：
[1] M. I. Platov South-Russian State Polytechnic University,
[2] Southern Federal University,undefined
来源：
Russian Chemical Bulletin | 2024年 / 73卷 / 9期
关键词：
Fischer—Tropsch synthesis; bifunctional cobalt catalyst; hierarchical HZSM-5 zeolite; alkaline modification; mesoporosity; selectivity;
D O I：
10.1007/s11172-024-4371-y
中图分类号：
学科分类号：
摘要：
New bifunctional composite catalysts for the Fischer—Tropsch synthesis were developed on the basis of a mixture of the Co—Al2O3/SiO2 catalyst, meso-HZSM-5 hierarchical mesoporous zeolite, and boehmite binder. The mesoporous zeolite was obtained by alkaline treatment of the industrial HZSM-5 zeolite. The developed catalysts are suitable for one-pot conversion of syngas into linear C5+ hydrocarbons, which then undergo cracking and isomerization reactions. The effect of the concentration of NaOH solution on the porosity and catalytic efficiency of the obtained meso-HZSM-5 zeolite was studied. The performances of the bifunctional catalysts obtained from alkali-treated and pristine HZSM-5 in the conversion of syngas were compared. In the presence of the catalyst based on the alkali-treated zeolite, the total productivity to C5+ hydrocarbons somewhat decreases. However, the increase in the total yield of branched and unsaturated hydrocarbons provides the formation of motor fuels with high anti-knock properties.
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页码：2606 / 2615
页数：9
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