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题名: Room-temperature isomerization of 1-butene to 2-butene over palladium-loaded silica nanospheres catalyst
作者: Li, Yang; Ma, Chunyan; Yang, Hongling; Zhang, Zhongshen; Zhang, Xin; Qiao, Nanli; Wang, Junhui; Hao, Zhengping
刊名: CHEMICAL ENGINEERING JOURNAL
出版日期: 2016-09-01
卷号: 299, 期号:0, 页码:1-7
关键词: Palladium/silica nanospheres ; 1-Butene double-bond isomerization ; 2-Butene ; Oxygen ; Room-temperature reaction
DOI: 10.1016/j.cej.2016.04.040
部门归属: 环境纳米材料实验室
英文摘要: The traditional reaction temperatures of 1-butene isomerization to 2-butene tend to above 100 degrees C, while here we report the unique catalytic performance of a Pd loaded silica nanospheres catalyst for 1-butene double-bond-shift isomerization at room temperature and showed 2-butene yield of 37.0%. Furthermore, the introduction of O-2 into the reaction mixture dramatically improved the yield efficiency to 57.2% without the formation of by-product CO2. The reaction process is proved that the ratio of trans-2-butene to cis-2-butene in the final product was determined by the trans:cis ratio of the butenylcarbenium ion intermediate, and the ratio of trans-2-butene to cis-2-butene decreased with the increasing reaction temperature. Unlike other palladium catalyst systems, Pd-0 nanoparticles were proved to act as catalytic active sites, and their oxidation and aggregation resulted in a decrease in activity. Most importantly, the catalyst acidity affected the catalytic performance, which provides theoretical basis for the choice of catalysts. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36002
Appears in Collections:环境纳米材料实验室_期刊论文

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