ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Diethyl carbonate synthesis from CO₂ with dehydrating agent of ethylene over catalysts of supported and mixed Ni–Cu@Na₃PW₁₂O₄₀

Meng Zhang

School of Biomedical Engineering, Southern Medical University, Guangzhou, China

E-mail: zhangmeng@smu.edu.cn

Received: 23 March 2020  Accepted: 21 June 2020

Abstract:

Excessive CO₂ emissions and alternative energy fuels are two major difficult issues. The utilization of CO₂ into fine chemicals is an optimal route. Diethyl carbonate (DEC) is an extremely versatile chemical intermediate. DEC is used in gasoline, pharmaceutical, chemical and other fields. DEC synthesis from CO₂ and ethanol is a typical green synthetic route. Ni–Cu@Na₃PW₁₂O₄₀ catalysts were synthesized by two novel methods of supported and mixed. The catalyst prepared by mixed method showed nice catalytic performance. It was confirmed that water removal was the key to improving conversion efficiency. In the presence of dehydrating agent of ethylene, ethanol conversion increased from ca. 3% to ca. 40%. Propylene oxide (PO) participated in the reaction and ethanol conversion continued to reach to ca. 90% while DEC selectivity dropped by half. Under optimal conditions, our Ni–Cu@Na₃PW₁₂O₄₀ catalyst effectively solved the two major issues above.

Keywords: CO2; Diethyl carbonate; Ethanol; Dehydrating agent; Catalyst

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01262-7

Chemical Papers 74 (12) 4493–4505 (2020)