D. Soriano et al., CATALYTIC PRODUCTION OF ELEMENTAL SULFUR FROM THE THERMAL-DECOMPOSITION OF H2S IN THE PRESENCE OF CO2, Chemical engineering communications, 143, 1996, pp. 73-89
The feasibility of using a cobalt-molybdenum (Co-Mo) sulfide catalyst
that was prepared from a commercial Co-Mo oxide catalyst for the produ
ction of elemental sulfur from hydrogen sulfide (H2S) and carbon dioxi
de (CO2) in a packed bed catalytic reactor was studied. It was demonst
rated that the desired sulfide catalyst could be prepared by first red
ucing, then sulphiding the corresponding oxide. The results showed tha
t the prepared catalyst was capable of producing elemental sulfur from
the thermal decomposition of H2S in the presence of CO2 over a temper
ature range of 465-700 degrees C and at atmospheric pressure. A specif
ic rate coefficient was calculated as well as the Arrhenius parameters
for the non-equilibrated reaction. The H2S decomposition reaction was
found to be a second order reaction and have an activation energy of
114.4 kJ/mol (27.3 kcal/mol).