Related Experiment Video
Updated: May 26, 2026

Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Hydrogen (H2) Recovery From Hydrogen Sulfide (H2S): Current Technologies, Challenges, and Future Outlook
Divyesh Cirikonda1, Astrid Campos-Mata1, Sehmus Ozden2
1Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas, USA.
None:
Hydrogen sulfide (H2S) can be transformed into hydrogen (H2) through several chemical and catalytic processes, offering a promising route for both waste treatment and clean H2 production. This colorless, flammable, and toxic gas is found abundantly in swamps, volcanoes, hot springs, sewages, other natural gas fields, and even in refineries and during some industrial processes. A very low concentration of H2S could cause adverse health impacts and even fatality. Therefore, removal of H2S is necessary. Moreover, decomposition of H2S produces H2 which is being considered as one of the most promising sustainable clean energy solutions. The by-product, sulfur, holds additional value through its diverse industrial applications and contribute to the circular economy. Numerous techniques, including thermal, thermo-catalytic, photocatalytic and electrocatalytic approaches, are employed for H2S decomposition. This review provides a comprehensive discussion on recent progress on H2S splitting via different methods, including thermocatalysis, photocatalysis, electrocatalysis and plasma-assisted decomposition to guide innovations in this highly promising yet unexplored areas. Moreover, energy requirement, economic viability and current market status are also explored. Finally, key challenges and future perspectives of this highly promising research area are discussed, directing great potential for future explorations.
Related Concept Videos
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Microbial Bioremediation of Hydrocarbons
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Preparation and Reactions of Sulfides
Precipitation and Co-precipitation
Catalysis
