06.5.2021

Electrochemical Reduction of CO2 to CO in Organic Electrolyte with HCl Oxidized to Cl2 on Anode for Phosgene Synthesis

By Chaojuan Li et al.

Abstract

Phosgene is an important feedstock in chemical industry. It can be used as an acylating agent to produce numerous high-value chemicals. In this work, we have constructed a novel membrane electrolysis cell for CO2 reduction to CO in organic electrolyte, with HCl oxidized to Cl2 on the anode in aqueous solution. The obtained CO and Cl2 can be used as feedstock to produce phosgene. Through this route, CO2 can be converted to high-value products, and meanwhile, chlorine can be recovered from HCl-containing industrial waste gases. Based on our experimental results, CO2 can be efficiently reduced to CO, and HCl can be efficiently oxidized to Cl2. Our designed electrolyzer has a promising utilization perspective in phosgene chemical industry.

The full (paywalled) article appeared on the Electrochimica Acta website at https://www.sciencedirect.com/science/article/abs/pii/S0013468621010185

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