Effect of Hydrogen Sulfide Content on the Recombination Reaction Between 1-hexene and Hydrogen Sulfide with Hydrogen

Abstract

The recombination reaction between H₂S and 1-hexene with H₂ was detected. The catalyst used was NiMoS/γ-Al₂O₃; the volume proportion of 1-hexene was 10 (vol%); H₂S content was 500, 1,000, 2,000, 3,000, 4,000 μg/g, respectively; initial H₂ pressure was 2.0 MPa; and reaction time and temperature were 2.0 hr and 473 K, respectively. It was revealed that, in the reaction system, as the content of H₂S increased, the content of hexanethiol and total sulfide in the reaction system increased significantly. The inhibition of hydrogenation by H₂S and the isomerization of 1-hexene toward 2-hexene and 3-hexene were researched. As the content of H₂S increased, the mass fraction of hexane, 2-hexene, and 3-hexene decreased and the remaining 1-hexene increased in the reaction system; therefore, H₂S inhibits the formation of hexane, 2-hexene, and 3-hexene.