In-depth understanding of acid catalysis of solvolysis of propene oxide over titanosilicates and titanosilicate/H2O2 systems
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- 作者：Lizhi Wua ; Shufang Zhaoa ; Longfei Lina ; Xiangqing Fangb ; Yueming Liua ; ymliu@chem.ecnu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Mingyuan Hea
- 关键词：Titanosilicates ; Titanosilicates/H2O2 ; Acid sites ; Alcoholysis ; Hydrolysis ; Ion exchange ; Additives
- 刊名：Journal of Catalysis
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：337
- 期：Complete
- 页码：248-259
- 全文大小：1217 K
文摘
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Four types of acid sites in titanosilicate/H2O2 catalytic systems are confirmed.
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Si–OH of defect sites and Ti–OOH are the main active acid sites.
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Various acid sites affect the PO alcoholysis product distribution obviously.
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The reaction activation energy of alcoholysis is higher than that of hydrolysis.
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Fine ion exchange and proper additives can suppress acid sites effectively.