Utilization of CO2 for aromatics production over ZnO/ZrO2-ZSM-5 tandem catalyst. (January 2019)

• Record Type: Journal Article
• Authors: Zhang, Xinbao; Zhang, Anfeng; Jiang, Xiao; Zhu, Jie; Liu, Junhui; Li, Junjie; Zhang, Guanghui; Song, Chunshan; Guo, Xinwen
• Is Part Of: Journal of CO₂ utilization. Volume 29(2019)
• Page Start: 140
• Page End: 145
• Publication Date: 2019-01
• Subjects: CO2 hydrogenation to aromatics -- Tandem catalyst -- Methanol synthesis on oxides -- Arene-based cycle; Carbon dioxide -- Periodicals; Carbon dioxide -- Environmental aspects -- Periodicals; Carbon dioxide mitigation -- Periodicals; Carbon dioxide; Carbon dioxide -- Environmental aspects; Carbon dioxide mitigation; Periodicals; 628.53205
• DOI: 10.1016/j.jcou.2018.12.002
• Languages: English
• ISSNs: 2212-9820

Abstract

Graphical abstract: One-pass CO2 conversion to aromatics with 70% selectivity has been achieved. Highlights: One-pass CO2 conversion to aromatics with selectivity of 70% has been achieved. The selectivity of undesirable methane is greatly suppressed to lower than 1%. A small amount of strong acid sites on ZSM-5 is indispensable for highly selective aromatics production. Abstract: In the past decades, considerable achievements have been made in CO2 hydrogenation to various C1 chemicals, lower olefins, and gasoline. However, the synthesis of aromatics from one-pass CO2 hydrogenation is still a great challenge owing to the extreme inertness of CO2 and the high aromatization barrier. Here we present a tandem catalyst comprising of ZnO/ZrO2 and ZSM-5 zeolite for one-pass CO2 conversion to aromatics with a selectivity of 70%, and the selectivity of undesirable methane is greatly suppressed to lower than 1%. A pathway of CO2 → CH3 OH → aromatics over the tandem catalyst was demonstrated. This work offers a viable alternative for CO2 emission abatement through its valorization as a low or even negative-cost feedstock.