Preparation of Ag/α-Al2O3 for ethylene epoxidation by an impregnation-bioreduction process with Cinnamomum camphora extract
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- 作者：Xiaolian Jinga ; b ; Jiale Huanga ; Huixuan Wanga ; Mingming Dua ; Daohua Suna ; sdaohua@xmu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Qingbiao Lia ; b
- 关键词：Impregnation&ndash ; bioreduction ; Cinnamomum camphora extract ; Ag catalyst ; Ethylene epoxidation
- 刊名：Chemical Engineering Journal
- 出版年：2016
- 出版时间：15 January 2016
- 年：2016
- 卷：284
- 期：Complete
- 页码：149-157
- 全文大小：2239 K
文摘
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Impregnation–bioreduction method was used to prepare the supported Ag catalyst.
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Influence of bioreduction temperature, concentration of CC extract, silver loading amount, calcination temperature and Cs addition on catalytic performance were investigated.
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The optimized catalyst 15Ag/α-Al2O3-150Cs gave the EO concentrations of 1.70%, EO selectivity of 87.46% and EO STY of 223.07 g h−1 L−1cat at 200 °C.
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The as-synthesized Ag catalyst exhibited high catalytic stability during 50 h.
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