临氢条件下NiMoS/γ-Al2O3催化辛烯-1与H2S的反应

 在高压反应釜中临氢条件下研究了NiMoS/γ-Al₂O₃催化辛烯-1与H₂S的反应，考察了反应温度、H₂S含量和烯烃体积分数对反应产物的影响，对反应产物进行GC-MS分析，探讨了辛烯-1与H₂S的反应机理。结果表明，辛烯-1与H₂S反应主要生成硫醇类和硫醚类化合物，辛烯-1本身还会发生加氢饱和反应和双键迁移异构化反应。随着反应温度升高，反应产物中的硫醇硫和总硫的量均逐渐减少，同时促进了辛烯-1的加氢饱和反应。反应体系中H₂S的含量越高，产物中硫醇硫和硫醚硫的含量越大；而且H₂S还会促进辛烯-1的双键迁移异构化反应，抑制辛烯-1的加氢饱和反应。随着反应体系中辛烯-1体积分数增大，产物中总硫的含量不断增大，而硫醇硫的含量先增大后减小，此外，辛烯-1的异构化产物和加氢饱和产物也会随之不断增多。

Reaction Between Octene-1 and H2S Over NiMoS/γ-Al2O3 catalyst under Presence of H2

The reaction between octene-1 and H₂S was studied over NiMoS/γ-Al₂O₃ catalyst in the high pressure autoclave. The effects of reaction temperature, H₂S  content and volume fraction of octene1 on the reaction between octene-1 and H₂S  under the presence of H₂ were investigated. The composition of the product was analyzed by GC-MS, and the reaction mechanism was discussed. The results showed that the sulfur compounds including mercaptans and thioethers were formed in the reaction between octene-1 and H₂S , and that hydrogenation and double bond isomerization reactions of octene-1 occurred. The contents of mercaptan sulfides and total sulfides in the product both increased with the reaction temperature rising, meanwhile the hydrogenation reaction of octene-1 could be promoted. The contents of mercaptan sulfides and thioether sulfides in the reaction system increased with the H₂S  content increasing; in addition, the isomerization of reaction of octene-1 could be promoted and the hydrogenation of octene-1 was inhibited. As the octene-1 volume fraction increased, the contents of total sulfides increased while the contents of mercaptan sulfides first increased and then decreased, moreover, the products of isomerization and hydrogenation reaction of octene-1 both increased.