FTIR study of adsorption and transformation of methanethiol and dimethyl sulfide on zirconia

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Abstract
An FTIR study shows that methanethiol is adsorbed dissociatively on ZrO2 leading to thiolate species and associatively, giving rise to H-bonded and coordinated species, less stable than the CH3S— species. Only coordinated and H-bonded species are formed by dimethyl sulfide adsorption. Heating in the presence of a gas phase shows that, besides the dismutation of CH3SH into (CH3)2S and H2S, side reactions occur on the surface leading to methoxy and formate species.

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