文献类型：期刊文献

英文题名：Hierarchical porous ZSM-5-promoted FeSiMn catalyst for gasoline selectivity via Fischer-Tropsch synthesis: effect of acid sites

作者：Zhang, Yulan Lin, Xizhu

第一作者：张玉兰

机构：[1] Guizhou Institute of Technology, Key Laboratory of Light Metal Materials Processing of Guizhou Province, No. 1 Caiguan Road, Guiyang, 550003, China

第一机构：贵州理工学院

年份：2023

卷号：47

期号：14

起止页码：6943-6950

外文期刊名：New Journal of Chemistry

收录：EI(收录号：20231613892837);Scopus(收录号：2-s2.0-85152473631)

语种：英文

外文关键词：Catalyst activity - Catalyst selectivity - Energy policy - Fischer-Tropsch synthesis - Gasoline - Hydrocracking - Iron compounds - Zeolites

摘要：With the growing global energy crisis and environmental problems, the Fischer-Tropsch synthesis (FTS) is considered as a direct route for producing cleaner fuels. Moreover, Fe-based catalysts are suitable for the production of traditional gasoline-based products (C5-C11). Specially, zeolites with acid sites are commonly employed for hydrocracking the heavy hydrocarbons during the FTS reaction, and the amount of acid sites is crucial for modifying the product selectivity. In this work, heterogeneous porous ZSM-5 samples with different amounts of acid sites were physically mixed with the chestnut-shaped FeSiMn catalyst. It was found that the C5-C11 selectivity was enhanced over the FeSiMn + ZSM-5(26) and FeSiMn + ZSM-5(17) catalysts in comparison to the bare FeSiMn catalyst. The NH3-TPD results indicated that the C5-C11 selectivity increased from 38.8 wt% (FeSiMn + ZSM-5(26)) to 53.5 wt% (FeSiMn + ZSM-5(17)) with the amount of weak and medium acid sites increasing from 0.169 to 0.563 mmol g?1. Benefiting from ZSM-5(17), the FeSiMn + ZSM-5(17) catalyst could effectively facilitate the C12+ hydrocracking reaction. The FTS performance indicates that FeSiMn + ZSM-5(17) possesses outstanding catalytic activity and enhanced C5-C11 productivity due to the appropriate interaction between active particles and ZSM-5(17). ? 2023 The Royal Society of Chemistry