Title

The High-Yield Direct Synthesis of Dimethyl Ether from CO₂ and H₂in a Dry Reaction Environment

Abstract

Direct dimethyl ether (DME) synthesis from CO2 and H2 is considered a promising production route. However, this process is thermodynamically and kinetically restricted by the presence of water as a byproduct. In this study, a water-conduction membrane was incorporated into the direct DME synthesis reactor to generate a dry reaction environment. In the absence of water, the activities of the CO2 hydrogenation catalyst (CZA) and methanol dehydration catalyst (HZSM-5) were boosted 4- and 10-fold, respectively, and single-pass CO2 conversion of up to 73.4%, far beyond equilibrium, and DME yields of up to 54.5% were obtained. Moreover, the good protection of the catalysts against fast deactivation was demonstrated.

Department(s)

Chemical and Biochemical Engineering

Comments

U.S. Department of Energy, Grant DE-AR0000806

International Standard Serial Number (ISSN)

2050-7488; 2050-7496

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2021 Royal Society of Chemistry, All rights reserved.

Publication Date

07 Feb 2021

Share

 
COinS