title: Intrinsic Kinetics of Dimethyl Ether Synthesis from Plasma Activation of CO2Hydrogenation over Cu-Fe-Ce/HZSM-5.
abstract: CO2is activated in a plasma reactor followed by hydrogenation over a Cu-Fe-Ce/HZSM-5 catalyst, and the intrinsic kinetics of the plasma catalytic process are studied. Compared with CO2hydrogenation using Cu-Fe-Ce/HZSM-5 alone, the CO2conversion and the dimethyl ether selectivity for the plasma catalytic process are increased by 16.3 %, and 10.1 %, respectively, indicating that the CO2was activated by the plasma to promote hydrogenation. A study of the intrinsic kinetics shows that the activation energies of methanol formation, the reverse water-gas shift reaction, and methanol dehydration to dimethyl ether are 149.34, 75.47, and 73.18 kJ mol-1, respectively, which are lower than if Cu-Fe-Ce/HZSM-5 is used without plasma, indicating that the activation of CO2in the plasma reduces the activation energy of the hydrogenation reaction and improves the yield of dimethyl ether.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical, Resource Processing and Process Intensification Technology, Guangxi University, No. 100 Daxue Road, Nanning, 530004, P. R. China.
authors.forename: Tongming
authors.initials: T
authors.lastname: Su
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical, Resource Processing and Process Intensification Technology, Guangxi University, No. 100 Daxue Road, Nanning, 530004, P. R. China.
authors.forename: Xinhui
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical, Resource Processing and Process Intensification Technology, Guangxi University, No. 100 Daxue Road, Nanning, 530004, P. R. China.
authors.forename: Zuzeng
authors.initials: Z
authors.lastname: Qin
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical, Resource Processing and Process Intensification Technology, Guangxi University, No. 100 Daxue Road, Nanning, 530004, P. R. China.|School of Chemistry and Chemical Engineering, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, 510275, P. R. China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Ji
keywords: carbon dioxide hydrogenation; copper catalysts; dimethyl ether; intrinsic kinetics; plasma activation