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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.
Contact Information:+86-411-84986120
E-Mail:hongchenguo@dlut.edu.cn
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Current position: Home >> Scientific Research >> Paper Publications

异丁烷在锌改性纳米HZSM-5沸石催化剂上芳构化的机理研究

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Indexed by:会议论文

Date of Publication:2013-08-29

Page Number:221-222

Key Words:异丁烷;HZSM-5沸石;沸石催化剂;活性中心;改性纳米;固定床反应;浸渍法;协同催化;解离吸附;红外光谱;

Abstract:  本文采用浸渍法制备了高载锌量的Lewis酸型Zn/纳米HZSM-5 催化剂.固定床实验结果证明,异丁烷在没有Br?nsted酸的Lewis酸型Zn/纳米HZSM-5 催化剂上转化具有较高的反应活性和芳烃选择性.用红外光谱发现异丁烷在催化剂的(Zn-O-Zn)2+活性中心上发生解离吸附形成伴生Br?nsted 酸(Zn-OH)+ 和[Zn-(C4H9)-]+ 负碳物种.DFT 法理论计算结果表明异丁烷在(Zn-O-Zn)2+活性中心上解离生成的负碳物种可以在Lewis酸的单独作用下进一步发生聚合、环化等反应生成芳烃.因此,在Lewis酸型Zn/纳米HZSM-5 催化剂上异丁烷芳构化反应存在伴生Br?nsted酸-Lewis酸协同催化和Lewis酸单独催化两种路径.