Tandem reactions of CO2 reduction and ethane aromatization,Journal of the American Chemical Society

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Tandem reactions of CO2 reduction and ethane aromatization
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2019-10-15 , DOI: 10.1021/jacs.9b08538
Elaine Gomez ₁ , Xiaowa Nie _{1,

2} , Ji Hoon Lee ₁ , Zhenhua Xie ₃ , Jingguang G Chen _{1,

3}

Affiliation

Aromatization of light alkanes is of great interest since this can expand the raw materials used to produce aromatics to include fractions of natural gas that are readily available and inexpensive. Combining CO2 reduction with ethane dehydrogenation and aromatization can also mitigate CO2 emissions. A one-step process that can produce liquid aromatics from the reactions of CO2 and ethane using phosphorous (P) and gallium (Ga) modified ZSM-5 has been evaluated at 873 K and atmospheric pressure. The addition of P improves the hydrothermal stability of Ga/ZSM-5, reduces coke formation on the catalyst surface, and allows the formation of more liquid aromatics through the tandem reactions of CO2-assisted oxidative dehydrogenation of ethane and subsequent aromatization. Density functional theory calculations provide insights into the effect of Ga- and P- modification on ethane dehydrogenation to ethylene as well as the role of CO2 on the production of aromatics.

中文翻译：

CO2 还原和乙烷芳构化的串联反应

轻质烷烃的芳构化具有重要意义，因为这可以扩大用于生产芳烃的原材料，包括易于获得且价格低廉的天然气馏分。将 CO2 减排与乙烷脱氢和芳构化相结合也可以减少 CO2 排放。已在 873 K 和大气压下评估了使用磷 (P) 和镓 (Ga) 改性的 ZSM-5 从 CO2 和乙烷的反应中生产液体芳烃的一步法。P的加入提高了Ga/ZSM-5的水热稳定性，减少了催化剂表面焦炭的形成，并允许通过CO2辅助乙烷氧化脱氢和随后芳构化的串联反应形成更多的液态芳烃。

更新日期：2019-10-15

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