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Direct and stable hydrogenation of CO2 to aromatics over a tandem catalyst Zn0.1Ti0.9Ox/HZSM-5

Junfu Zhou,Yuting Miao,Hongxin Ding,Yuanhang Ren,Lin Ye,Bin Yue,Heyong He

Direct and stable conversion of CO 2 to aromatics (CTA) is an attractive route for reducing CO 2 emissions. However, due to the chemical inertness of CO 2 , direct CTA reaction with high aromatics selectivity is still challenging. In this work, a tandem catalyst Zn 0.1 Ti 0.9 O x /HZSM-5 with appropriate density and strength of acid sites exhibits a high aromatics selectivity of 67.2% and long-term stability over 100 h. Furthermore, the total selectivity of benzene, toluene, and xylene achieves 24.1% over Zn 0.1 Ti 0.9 O x /HZSM-5 with a modified hydrophilic surface. In addition, the CTA via the formate route has been determined in this reaction system.