文献类型：期刊文献

英文题名：Research and application of a non-noble metal catalyst in the removal of trace olefins from aromatics

作者：Wang, Le[1];Meng, Xuan[1];Wang, Sitan[1];Shi, Li[1];Hu, Xiude[2];Liu, Naiwang[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China;[2]Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gre, Yinchuan 750021, Ningxia, Peoples R China

年份：2021

卷号：45

期号：8

起止页码：3901

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20211010021298);WOS:【SCI-EXPANDED(收录号:WOS:000623596600017)】；

基金：We are so grateful and want to extend our sincere appreciation for the financial support from the National Natural Science Foundation of China (NO. 21808054), the Science and Technology Commission of Shanghai Municipality (Sailing Program 18YF1406300) and the Open Project Program of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, (2020-KF-38).

语种：英文

外文关键词：Hydrogen - II-VI semiconductors - Catalyst activity - Copper compounds - Precious metals - Olefins - Aromatization - Trace elements

摘要：The hydrogenation catalyst plays an important role in removing trace olefins from aromatics. In this work, a Cu/ZnO/montmorillonite catalyst was developed. The Cu/ZnO/montmorillonite catalyst is not only comparable in performance to the noble metal Pt/montmorillonite catalyst, but also has greater potential because the activity of the catalyst at low hydrogen flow is almost the same as that at high hydrogen flow. Moreover, aromatic cracking will not occur under the action of the Cu/ZnO/montmorillonite catalyst. The activity of the modified catalyst used to remove olefins is stable at about 92% at low weight hourly space velocity (WHSV). The three functions of ZnO are summarized as follows: (i) Zinc oxide is beneficial to restore the BET surface area of the Cu-based catalyst. (ii) Zinc oxide can improve the amount of Cu that can be reduced by hydrogen. (iii) ZnO increases the grain size of Cu-2(NO3)(OH)(3), resulting in a higher reduction temperature for Cu-based catalysts.