Preparation, Structure-Performance Relationship, and Reaction Network of ZnZSM-5 for Oxidative Dehydrogenation of Ethane with CO2
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作者
Liu, Pengyu; Zhang, Lina; Wang, Xingbo; Du, Meng; Hao, Yingdong; Li, Lina; Chen, Xinqing; Sun, Nannan; Wei, Wei
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刊物名称
CHEMISTRY-A EUROPEAN JOURNAL
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年、卷、文献号
2023, 29, 1521-3765
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关键词
Liu, Pengyu; Zhang, Lina; Wang, Xingbo; Du, Meng; Hao, Yingdong; Li, Lina; Chen, Xinqing; Sun, Nannan; Wei, Wei
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摘要
Ethylene (C2H4) is a major chemical for the modern society, and new technologies for its production are of strategic importance globally. Recently, oxidative dehydrogenation of ethane (C2H6) using CO2 as a milder oxidant (CO2-ODH) is proposed as a potential way for C2H4 production, and development of effective catalysts for the process is drawing wide attention. Here, we report on a facilely prepared ZSM-5 supported Zn system, i. e., ZnZSM-5, which showed great promise in CO2-ODH. Samples with different Zn loadings were prepared and evaluated, and the highest performance was obtained over 0.05ZnZSM-5 at 700 degrees C and a CO2:C2H6 feeding ratio of 5 : 1. During 340 min TOS, the C2H6 conversion decreased moderately from 36.2 % to 23.1 %, and the C2H4 yield stabilized at 21.9 % to 27.9 %. Based on systematic characterization and investigation of reaction conditions, the structure-performance relationship and reaction network were discussed in detail.
