在脱除硫化氢的同时实现所含氢和硫元素的资源化转化具有重要的环境、经济和社会效益。硫化氢制备硫磺和硫化工产品的技术成熟，但是氢元素以水的形式浪费。热分解法、电化学法、光化学法、重整甲烷法和热化学循环法可以实现硫化氢资源化制氢，但是须解决各自的瓶颈问题。在硫化氢化学循环中引入中间反应物可以实现硫化氢制备氢气和硫酸，与清洁能源耦合可以实现过程的无碳排放，是实现可持续发展和循环经济的有效途径。

It is of significance to recover hydrogen and sulfur concurrently while removing hydrogen sulfide (H₂S), achieving environmental, economic and social benefits.Conventional technology to produce sulfur and sulfur-containing chemical products from H₂S develops maturely, but in which hydrogen is wasted in the form of water.The pyrolysis, electrochemistry, photochemistry, methane reforming, and thermochemical cycle methods can realize the production of hydrogen from H₂S, there are however their own bottlenecks to overcome.The H₂S splitting cycle (overall reaction:H₂S+2H₂O+O₂2H₂+H₂SO₄) can achieve the simultaneous production of hydrogen and sulfuric acid from H₂S with the addition of intermediate reactants.When it is coupled with clean energy, the H₂S splitting cycle can be zero emission of carbon dioxide, representing an effective way to achieve sustainable development and circular economy.