Mesoporous carbon as an effective support for Fe catalyst for CO2 hydrogenation to liquid hydrocarbons

被引：77

作者：

Hwang, Sun-Mi ^{[1
]}

Zhang, Chundong ^{[2
]}

Han, Seung Ju ^{[1
]}

Park, Hae-Gu ^{[1
]}

Kim, Yong Tae ^{[1
]}

Yang, Sunkyu ^{[1
]}

Jun, Ki-Won ^{[1
]}

Kim, Seok Ki ^{[1
]}

机构：

[1] KRICT, Carbon Resources Inst, 141 Gajeongro, Daejeon 34114, South Korea

[2] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Jiangsu, Peoples R China

来源：

JOURNAL OF CO2 UTILIZATION | 2020年 / 37卷

基金：

新加坡国家研究基金会;

关键词：

CO(2)hydrogenation; Mesoporous carbon; Fe catalyst; Hydrocarbons; Power-to-Liquids; FISCHER-TROPSCH SYNTHESIS; NITROGEN-DOPED CARBON; IRON PARTICLE-SIZE; DIOXIDE HYDROGENATION; HIGH SELECTIVITY; LIGHT OLEFINS; POTASSIUM; PROMOTERS; NANOTUBES; SPHERES;

D O I：

10.1016/j.jcou.2019.11.025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Identifying highly efficient catalysts for direct CO2 hydrogenation to liquid hydrocarbons is crucial for CO2 utilization via chemical conversion using renewable resources, the so-called Power-to-Liquids. In this study, well-defined mesoporous carbon (MPC) of 6.9 nm pore size was synthesized as a support material for Fe oxycarbide nanoparticles, which serve as active sites for the CO2 hydrogenation reaction, combining reverse water-gas shift and Fischer-Tropsch reactions. The unique physicochemical properties of MPC favored the formation of an active carbidic Fe phase and the rapid diffusion of produced hydrocarbons which resulted in an enhanced CO2 conversion and long-chain hydrocarbon selectivity. As a result, the MPC supported Fe catalyst showed C5+ hydrocarbon selectivity of 44.5% with a CO2 conversion rate of 50.6% (300 degrees C, 2.5 MPa, H-2/CO2 = 3).

引用

页码：65 / 73

页数：9

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