Analysis of the Catalytic Splitting of H2S for H2 Production

The splitting of hydrogen sulphide to produce value-added products, namely hydrogen and elemental sulphur, represents a promising route for the treatment of H2S, a hazardous waste gas, and for a circular production of hydrogen. The decomposition reaction has been studied in a plug flow reactor on the catalyst MoS2 for temperatures ranging between 640 and 929 °C and with a H2S partial pressure of 1.27 kPa. Equilibrium conversions have been reached for residence times below 3 s and the apparent activation energy of 71.894 kJ/mol has been calculated. The catalytic decomposition on MoS2 results therefore to be an interesting pathway for the production of H2 from H2s.