Investigation on COS Hydrolysis over TiO2 Alumina Catalyst

The impetus to reduce the emission of sulfur-containing compounds into the environment has become increasingly important in recent years. COS as the main organic sulfur compounds from synthesis gas can be removed by catalytic hydrolysis. A serious of catalyst samples for COS hydrolysis was prepared by dry-mixing technique using K₂CO₃ as a active component mixing TiO₂ with pseudo-boehmite. The property of K₂CO₃/TiO₂-Al₂O₃ catalyst for COS hydrolysis is characterized by activity evaluation, FT-IR and surface basicity measurement. It is found that the activity of COS hydrolysis have not been influenced by additive of TiO₂ over alumina catalyst. But the rate of H₂S desorption from the catalyst surface have increased, thus to reduce the reaction of adsorbed H₂S on surface with O₂, the K₂CO₃/TiO₂-Al₂O₃ catalyst has ability of anti-sulfur poisoning.