催化作用
甲醇
芳构化
沸石
化学工程
硅
材料科学
选择性
溶解
ZSM-5型
蚀刻(微加工)
无机化学
化学
图层(电子)
纳米技术
有机化学
冶金
工程类
作者
Haifeng Tian,Lv Jinlong,Xiaohu Liang,Xiaohua Tang,Fei Zha
标识
DOI:10.1002/ente.201800119
摘要
Abstract Catalytic performance is influenced by the morphology and assembly of catalyst particles. Therefore, Zn ion‐doped HZSM‐5 zeolite with different morphological structures is prepared using post‐treatments of selective dissolution and recrystallization, causing silicon components to migrate from the interior to the exterior in the different template etching processes. The core–shell, hollow, and hierarchical core–shell Zn/HZSM‐5 microspheres with weak acid sites on the external surfaces are successfully synthesized. Hierarchical core–shell‐structured Zn/HZSM‐5 microspheres with a silicon‐rich surface layer are prepared using an etching method in n ‐butylamine solution. Their catalytic activity is investigated in methanol aromatization. The functionalized morphological Zn/HZSM‐5 catalysts show good catalytic performance and the silicon‐rich surface layer improves selectivity of p ‐xylene in the reaction of methanol to aromatics.
科研通智能强力驱动
Strongly Powered by AbleSci AI