Abstract
The reactions of ethanol and propanol with H 2 S were studied over different types of zeolites at 523 and 623 K. The most active of all investigated zeolites is Na-X at 623 K. The first step of the hydrosulphurization of C 2 and C 3 alcohols is the dehydration of alcohols toward olefins, which react with chemisorbed H 2 S, giving thiols and other organic sulphur compounds. The role of sodium cations as active sites is stressed. The dehydration of alcohols increases in the presence of H 2 S.
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