Reduction of CO₂ under high pressure and high temperature on Pb-granule electrodes in a fixed-bed reactor in aqueous medium

详细信息    查看全文

• 作者：Kö ; leli ; Fatih ; Balun ; Didem
• 关键词：Electrochemical reduction ; Carbondioxide ; Fixed-bed reactor ; Pb granule electrodes ; HCOOH formation
• 刊名：Applied Catalysis A: General
• 出版年：2004
• 出版时间：October 28, 2004
• 年：2004
• 卷：274
• 期：1-2
• 页码：237-242
• 全文大小：178 K

文摘

The electrochemical reduction of CO₂ has been investigated on Pb granule electrodes at high-pressure conditions and high temperatures (electrode potentials between −1.6 and −2.1V) by using aqueous 0.2M K₂CO₃ as electrolyte in a fixed-bed reactor. Only formic acid was found as a reaction product. The maximum Faradaic efficiency of the product was found to be 94 % at −1.8V (SCE). The space–time yield of the reaction was found to be 1.3 × 10^−3kgL^−1h^−1 with an A_v value of 1.1cm^−1. Transfer coefficient, β, of the reaction was 0.11, and the exchange current density, j_o, was found to be 4.1 × 10^−4Acm^−2.