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中文
Hongchen Guo

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates


Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:School of Chemical Engineering
Discipline:Industrial Catalysis
Physical Chemistry (including Chemical Physics)
Business Address:521 Room,Chemical Engineering Building B,West Campus, Dalian University of Technology.
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Current position: Home >> Scientific Research >> Paper Publications
碱源对低模硅比凝胶水热合成β沸石的影响

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Indexed by:Journal Article

Date of Publication:2013-10-15

Journal:分子催化

Included Journals:ISTIC、PKU、EI、Scopus

Volume:27

Issue:5

Page Number:429-438

ISSN:1001-3555

Key Words:四乙基氢氧化铵;低模硅比;β沸石;氨水;硅铝比

Abstract:以四乙基氢氧化铵为模板剂,研究了低模硅比条件下口沸石的合成规律.发现晶种和模板剂之间存在明显的协同导向作用.但碱源对晶种和模板剂的导向作用以及β沸石产物有明显影响.以NaOH为碱源时,晶种的作用主要是缩短晶化诱导期,而模板剂的作用主要是提高晶体生长速率.以氨水为碱源时,晶种和模板剂对缩短诱导期和提高晶体生长速率都有贡献.总的来说,以NaOH为碱源时凝胶的晶化速率较快.但是β沸石产物的硅铝比很低,且晶粒度较大,团聚体比较紧密.相比之下,以氨水为碱源有利于提高口沸石的硅铝比.同时,所合成的口沸石晶粒度小,外表面积大,团聚体中介孔较多.