Low-temperature selective oxidation of hydrogen sulfide into elemental sulfur on a NiS2/SiC catalyst

Nickel sulfide supported on SiC exhibits a very high activity and selectivi ty for the direct oxidation of H2S into elemental sulfur at low reaction te mperature (60 degrees C). The presence of water on the catalyst surface cou ld explain the absence of deactivation even at high sulfur loading of the s urface. The chemical inertness of the SiC support allowed any detrimental r eactions between the active phase and the support itself to be avoided.