文献类型：期刊文献

英文题名：Design of hierarchically structured cubic Fe-based catalysts with controllable assembly architectures for gasoline fuel synthesis

作者：Zhang, Yulan Lin, Xizhu

第一作者：张玉兰

通信作者：Zhang, YL[1]

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Doctor Rd Dang Wu Town Guian New Area, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Doctor Rd Dang Wu Town Guian New Area, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2025

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20255119742372);Scopus(收录号：2-s2.0-105024918080);WOS:【SCI-EXPANDED(收录号:WOS:001639476600001)】；

基金：This work was financially supported by the National Natural Science Foundation of China [22368015], Major Science and Technology Special Project of Guizhou Province, QiankeheRencaiXKBF[2025]006 and the Guizhou Province Science and Technology Plan Projects (QianKeHeJiChu-ZK[2023]YiBan128 and QianKeHeJiChu-ZK[2023]YiBan 132).

语种：英文

摘要：The direct conversion of syngas into gasoline-range fuels (C5-C11 hydrocarbons) using a metal-zeolite bifunctional catalyst is an effective approach for Fischer-Tropsch Synthesis (FTS). However, it remains a significant challenge to achieve a gasoline product fraction with excellent selectivity and good stability. In this study, hierarchical porous catalysts with controllable assembly architectures were designed by adjusting the hydrothermal temperature. These catalysts were then physically mixed with zeolite to fabricate bifunctional catalysts. The characteristics and catalytic performance of the bifunctional catalysts were evaluated for the one-step conversion of syngas to C5-C11 hydrocarbons. It was found that the dense assembly structure of FeZ-120 inhibits the interaction between syngas and active sites, thereby leading to lower CO conversion. FeZ-200 exhibits a looser assembly structure, which is not conducive to the uniform diffusion of syngas and FTS products, resulting in poor catalytic stability. Furthermore, FeZ-160 with a regular assembly structure exhibits a lower content of the CFe2.5 active phase, leading to a lower CO conversion compared to FeZ-200. FeZ-180 with an appropriate assembly structure facilitates the contact between syngas and active sites, thus promoting the formation of the CFe2.5 phase that enables a C5-C11 hydrocarbon selectivity of 62.9 wt% and a CO conversion of 93.6%. The preparation of hierarchical porous catalysts with controllable structures provides a novel strategy for the synthesis of functional catalysts.