The high-yield direct synthesis of dimethyl ether from CO2 and H2 in a dry reaction environment. Issue 5 (18th November 2020)

• Record Type: Journal Article
• Authors: Li, Huazheng; Ren, Shoujie; Zhang, Shenxiang; Padinjarekutt, Surya; Sengupta, Bratin; Liang, Xinhua; Li, Shiguang; Yu, Miao
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 5(2021)
• Page Start: 2678
• Page End: 2682
• Publication Date: 2020-11-18
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta10417e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Highly efficient DME synthesis from CO2 and H2 was realized in a dry reaction environment via the incorporation of a water-conduction membrane. 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.