The direct conversion of hydrogen sulfide to hydrogen and sulfur

On reaction kinetics for the thermal decomposition of hydrogen sulfide

“…tion. Moreover, in another recent study, Faraji et al 1998 conducted experiments over 1,273᎐1,473 K in empty and quartz-packed reactors made of quartz. They concluded that at temperatures greater than 1,273 K the homogeneous gasphase reaction is much faster than the catalytic reaction on the silica surface.…”

Mo-Doped FeS Mediated H2 Production from H2S via an In Situ Cyclic Sulfur Looping Scheme

“…Nonoxidative H 2 S decomposition, as illustrated in eq , is a promising strategy to overcome the drawbacks of oxidative schemes by yielding high-purity H 2 along with higher energy efficiency in sulfur recovery However, direct H 2 S decomposition in the gaseous phase is highly endothermic, and its reversible nature severely limits the equilibrium conversion. , To improve the H 2 yield, nonoxidative H 2 S decomposition using various approaches such as photocatalytic, electrochemical, and plasmolytic have been investigated. , Plasmolytic and electrochemical approaches are primarily constrained by inefficient H 2 yields and high energy demand; photocatalysis is attractive due to the use of renewable energy source, but its long-term stability is limited by sulfur poisoning on the catalyst or in the electrolyte. ,− …”

Hydrogen Production through Thermal Decomposition of Hydrogen Sulfide: Modification of the Sulfur Recovery Unit To Produce Ultrapure Hydrogen

“…The pilot tests indicated the potential to crack 25% of total hydrogen sulfide to hydrogen without adversely affecting the stability of the flame. Faraji et al focused on thermal decomposition of hydrogen sulfide at high temperature . It was proved that the reverse reaction between hydrogen and sulfur to regenerate hydrogen sulfide can be overcome by using readily attainable and sufficiently high gas flow rates.…”