燃料化学学报2025，Vol.53Issue(11)：1603-1616,14.DOI:10.1016/S1872-5813(25)60565-2
钴掺杂的硫化镉间接电催化硫化氢分解制氢气和硫磺
Indirect electrocatalytic decomposition of hydrogen sulfide into hydrogen and sulfur using cobalt doped cadmium sulfide
摘要
Abstract
The hydrotreating process in refineries generates substantial toxic H2S.The conventional Claus process(partial oxidation of H2S)recovers sulfur but fails to utilize the hydrogen resource in H2S.Electrocatalytic decomposition of H2S to produce high-purity H2(for refinery hydrogenation cycles)and sulfur offers significant circular economy benefits.However,traditional direct electrocatalytic systems suffer from low efficiency,severe membrane fouling(due to sulfur deposition blocking ion-exchange membranes)and high catalyst costs,hindering the development of H2S decomposition technologies.To address these challenges,we developed an efficient indirect electrocatalytic H2S decomposition system using Co-doped CdS(Co-CdSm,Co∶Cd ≈ 1-5∶1-5)as electrocatalyst.Experimental results demonstrate that the optimized Co-CdSm(4∶1)catalyst achieves exceptional performance,requiring a low onset potential of 1.25 V vs.RHE,with 99％conversion,60 h stability and 98％of H2 Faraday efficiency.Theoretical calculations quantify the adsorption/dissociation processes of H2S on CdS and Co-CdSm,revealing that Co sites effectively reduce the reaction energy barrier for decomposition of H2S into H2 and sulfur.关键词
间接电催化/硫化氢/氢气生产/硫磺/Co-CdSmKey words
indirect electrocatalysis/hydrogen sulfide/hydrogen production/sulfur/Co-CdSm分类
化学引用本文复制引用
刘港,杜鑫磊,林德阳,郭明旭,薛彤洁,段红玲,夏薇,王延臻,郭爱军..钴掺杂的硫化镉间接电催化硫化氢分解制氢气和硫磺[J].燃料化学学报,2025,53(11):1603-1616,14.基金项目
The project was supported by National Natural Science Foundation of China(21776313).国家自然科学基金(21776313)资助 （21776313）
