文献类型：期刊文献

英文题名：Design of a novel porous Fe2O3 cage catalyst for the production of gasoline fuels via coupling Fischer-Tropsch with zeolite cracking

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, Doctor Road Dang Wu Town Guian new area, Guiyang, 550003, China

第一机构：贵州理工学院

年份：2024

卷号：48

期号：17

起止页码：7875-7884

外文期刊名：New Journal of Chemistry

收录：EI(收录号：20241615913576);Scopus(收录号：2-s2.0-85190123825)

语种：英文

外文关键词：Aromatic hydrocarbons - Catalyst selectivity - Catalytic cracking - Fischer-Tropsch synthesis - Gasoline - Hematite - Oligomers - Product design - Silicon - Zeolites

摘要：Designing an efficient zeolite-introduced novel Fe-based catalyst is essential for the direct production of gasoline fuels via coupling Fischer-Tropsch synthesis (FTS) and catalytic cracking reactions. Herein, we constructed a novel Fe2O3 cage catalyst with a hierarchical porous structure, which served as FTS sites for physically mixing with porous ZSM5 to provide catalytic cracking sites. The hybrid Fe + ZSM5(27) catalyst achieved an excellent gasoline fuel (C5-C11) selectivity of 62.7 wt%, outperforming traditionally supported and physically mixed catalysts. Moreover, the aromatic content was 22.1% in terms of C5+ hydrocarbons, which was within the range of the restricted aromatic content. The enhanced catalytic performance can be attributed to the Si/Al ratio governing the oligomerization reaction. ZSM5 with a suitable Si/Al ratio can promote the oligomerization of C2-C4 olefins to produce desired C5-C11 hydrocarbons. Fe + ZSM5(27) with a Si/Al ratio of 27 demonstrated a prominent CO conversion of 93.6% with a higher C5-C11 selectivity of 62.7 wt%. This work provides a promising strategy for designing multifunctional catalysts to modulate product distribution. ? 2024 The Royal Society of Chemistry.