[2E15-2E18] C1 chemistry (1)

[2E17] Direct conversion of CO₂ to ethylene by bifunctional ZnCr₂O₄-ZSM-22 catalyst

○Ying Shi¹, Weizhe Gao¹, Jiaqi Fan¹, Chengwei Wang¹, Fan Wang¹, Yingluo He¹, Xiaoyu Guo¹, Shuhei Yasuda¹, Guohui Yang¹, Noritatsu Tsubaki¹ (1. University of Toyama)

Keywords:CO2 conversion, ethylene, ZSM-22 zeolite

In recent years, oriented synthesis of single ethylene from CO₂ is still a challenge. In this work, an efficient bifunctional ZnCr₂O₄-ZSM-22 catalyst was developed for direct conversion of CO₂ to ethylene. This catalyst exhibited 24.0% ethylene selectivity and 21.9% CO₂ conversion by one-pass. It is worth noting that the ratio of ethylene/light olefin (C-mol ratio) was more than 93%, higher than those of other zeolites. Moreover, the ZnCr₂O₄-ZSM-22 catalyst realized a superior stability, where there was no significant deactivation during 60 h. In addition, the effects of various factors on the catalytic performances were also systematically investigated.