Effect of H2S on the transformation of 1-hexene over NiMoS/γ-Al2O3 with hydrogen

The effect of H2S contents on the transformation of 1-hexene with hydrogen over NiMoS/γ-Al2O3 catalyst was investigated. Inhibition of H2S on both hydrogenation and isomerization reactions of olefin has been demonstrated. And the promotion effect of H2S on the formation of C6 thiols and C12 thioethers has also been observed. It was found out that there was only one type of active site on the NiMoS/γ-Al2O3 for reactions which include hydrogenation reaction, isomerization reaction and sulfides formation reaction, and the formation reactions of sulfides were superior to both hydrogenation and isomerization reactions. The reaction network for the conversion of 1-hexene in the presence of H2S was proposed.