Abstract
Thermal decomposition of hydrogen sulfide has been done in a flow system using pyrex tube reactor containing V 2O 5/Al 2O 3 catalyst (which it will change to V 2S 3/Al 2O 3). Continuous separation of sulfur and hydrogen has been done by passing the reaction products through a cold trap for recovering sulfur, and diethanolamine for the separation of unreacted hydrogen sulfide. Hydrogen production was measured against time for constant H 2S feeding to the reactor. The conversion efficiency has been studied for different vanadium oxide/alumina percentages for a temperature range of 723 to 873 K. Arrhenius activation energies have been calculated for thermal decomposition of H 2S for some catalytical compositions of vanadium sulfide. The maximum conversion efficiency was 70% at 873 K for 0.38 (min) resident time for 5–10 wt% V 2S 3/Al 2O 3 catalyst.
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