Effect of 1-Hexene Volume Fraction on the Reaction between 1-Hexene and Hydrogen Sulfide with Hydrogen

摘要

The recombination reaction between H_2S and 1-hexene with H_2 was detected. The catalyst used was NiMoS/Al_2O_3 (presulfided); the volume fraction of 1hexene in the model feedstock was 5, 10, 15, 20, 25 (vol%), respectively; H_2S concentration was 4,000 μg/g; initial H_2 pressure was 2 MPa; and reaction time and reaction temperature were 2 hr and 473 K, respectively. It was revealed that, in the reaction system, as the volume fraction of 1-hexene increased, the concentration of total sulfur in the reaction system first increased significantly and then was steady; the hexanethiol content in the product first increased and then decreased. The hydrogenation of 1- hexene was promoted as the 1-hexene volume fraction increased. As the 1-hexene volume fraction increased, the mass fraction of hexane in the product increased; the mass fraction of 2-hexene in the product first increased and then decreased; the mass fraction of 3-hexene in the reaction system first increased significantly and then was steady.