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Over the last decades, sulfur recovery from the H 2 S-containing acid gases (issued from oil refineries or natural gas plants) has become more and more important due to the ever increasing standards of efficiency required by environmental protection pressures. The H 2 S-tail gas was directly oxidized by oxygen to yield elemental sulfur. A significant improvement of the H 2 ...
Selective oxidation of H 2 S into elemental sulfur at near-ambient temperature have been carried out over NiS 2 nanoparticles encapsulated inside multi-walled carbon nanotubes (MWNTs). The high capacity of solid sulfur storage on the MWNT-based catalyst compared to that of macroscopic SiC grains was thus attributed to the large void volume outside the MWNTs available for the sulfur...
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