Selective conversion of CO2 and H2 into aromatics

Nature Communications
Youming NiZhongmin Liu

Abstract

Transformation of greenhouse gas CO2 and renewable H2 into fuels and commodity chemicals is recognized as a promising route to store fluctuating renewable energy. Although several C1 chemicals, olefins, and gasoline have been successfully synthesized by CO2 hydrogenation, selective conversion of CO2 and H2 into aromatics is still challenging due to the high unsaturation degree and complex structures of aromatics. Here we report a composite catalyst of ZnAlOx and H-ZSM-5 which yields high aromatics selectivity (73.9%) with extremely low CH4 selectivity (0.4%) among the carbon products without CO. Methanol and dimethyl ether, which are synthesized by hydrogenation of formate species formed on ZnAlOx surface, are transmitted to H-ZSM-5 and subsequently converted into olefins and finally aromatics. Furthermore, 58.1% p-xylene in xylenes is achieved over the composite catalyst containing Si-H-ZSM-5. ZnAlOx&H-ZSM-5 suggests a promising application in manufacturing aromatics from CO2 and H2.

References

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Citations

Jan 4, 2019·Chemical Communications : Chem Comm·Junfeng ZhangYisheng Tan
Jul 17, 2020·Chemical Communications : Chem Comm·Lisheng GuoNoritatsu Tsubaki
Dec 15, 2019·Nature Communications·Run-Ping YeYuan-Gen Yao
Sep 17, 2020·Science Advances·Jiachang ZuoYouzhu Yuan
Oct 30, 2020·ChemSusChem·Weizhe GaoNoritatsu Tsubaki
Feb 2, 2021·Chemical Communications : Chem Comm·Huimin LiuJinhua Ye
Oct 20, 2020·Chemical Society Reviews·Wanlin GaoSang-Eon Park
Apr 15, 2021·ACS Applied Materials & Interfaces·Wen-Gang CuiTong-Liang Hu
Oct 4, 2019·Chemical Reviews·Chenlu XiePeidong Yang
Nov 5, 2020·ACS Central Science·Peng GaoYuhan Sun
Oct 7, 2021·Advanced Materials·Qiming SunJihong Yu

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Methods Mentioned

BETA
X-ray
scanning electron microscopy
transmission electron microscopy

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