【摘要】 研究了加压下二氧化碳用碘化四（4-三甲铵苯基）卟啉合钴（简写为Co[p-N（CH₃）₃]TPPI）催化的电化学还原,考察了二氧化碳压力、电解质、电极材料和阴极电位等因素对二氧化碳还原的影响.更多还原

【Abstract】 The electrocatalytic reduction of carbon dioxide in aqueous solution using Co[p-N（CH₃）₃]TPPI([p-N（CH₃）₃]TPPI=tetrakis （4-trimethylammoniophenyl） porphyrin iodide] under pressure （4～22atm） was carried out on solid-state metal electrodes such as In, Sn, Pb and Pb-Hg. The reduction products were mainly carbon monoxide and a small amounts of formic acid. The effects of pressure of carbon dioxide, electrolytes, catalyst concentration, electrode materials and potentials on the reduction of carbon dioxide were studied. The optimum voltage for maximal current efficiency of reduction products was at-1.2V vs. SCE for all four kinds of metal electrodes. Good current efficiencies （>90%） were obtained with lead and amalgamated lead electrodes in an aqueous solution of NaHCO₃ containing 7.4×10^-5mol/L catalyst.更多还原