SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 50 ›› Issue (10): 197-204.DOI: 10.1016/j.cjche.2022.07.001

• Separation Science and Engineering • 上一篇    下一篇

Efficient conversion of H2S into mercaptan alcohol by tertiary-amine functionalized ionic liquids

Wenjie Xiong1, Mingzhen Shi1, Yan Lu1, Xiaomin Zhang1,2, Xingbang Hu1,2, Zhuoheng Tu1, Youting Wu1   

  1. 1 Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;
    2 Institute of Green Chemistry and Engineering, Nanjing University, Suzhou 215163, China
  • 收稿日期:2022-03-19 修回日期:2022-06-29 出版日期:2022-10-28 发布日期:2023-01-04
  • 通讯作者: Xiaomin Zhang,E-mail:xmzhang@nju.edu.cn;Zhuoheng Tu,E-mail:zhtu@nju.edu.cn;Youting Wu,E-mail:ytwu@nju.edu.cn
  • 基金资助:
    This work was sponsored by the National Natural Science Foundation of China (22078145 and 22208140).

Efficient conversion of H2S into mercaptan alcohol by tertiary-amine functionalized ionic liquids

Wenjie Xiong1, Mingzhen Shi1, Yan Lu1, Xiaomin Zhang1,2, Xingbang Hu1,2, Zhuoheng Tu1, Youting Wu1   

  1. 1 Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;
    2 Institute of Green Chemistry and Engineering, Nanjing University, Suzhou 215163, China
  • Received:2022-03-19 Revised:2022-06-29 Online:2022-10-28 Published:2023-01-04
  • Contact: Xiaomin Zhang,E-mail:xmzhang@nju.edu.cn;Zhuoheng Tu,E-mail:zhtu@nju.edu.cn;Youting Wu,E-mail:ytwu@nju.edu.cn
  • Supported by:
    This work was sponsored by the National Natural Science Foundation of China (22078145 and 22208140).

摘要: The resource utilization of hydrogen sulfide (H2S) is of great significance in natural gas chemical industry. Described herein have developed a novel method mediated in tertiary amine-functionalized ionic liquids (ILs) to convert H2S into mercaptan alcohols with enols. The effect of ILs, substrate scope, and regeneration experiments have been investigated. It is found that the conversion of 3-methyl-2-buten-1-ol by H2S can reach 52% with a 50% (mol) catalyst loading of bis(2-dimethylaminoethyl) ether methoxyacetate within 12 h at 90 ℃. The reaction mechanism was speculated based on theoretical calculation. Besides, a plausible reaction-separation-integrated strategy was further proposed. This work reveals an effective insight into the capture and catalytic conversion of H2S to high valuable mercaptan alcohol, which makes the utilization method of H2S resource universal and has the potentiality for industrial application.

关键词: Ionic liquids, Reaction, Catalysis, Hydrogen sulfide, DFT calculation

Abstract: The resource utilization of hydrogen sulfide (H2S) is of great significance in natural gas chemical industry. Described herein have developed a novel method mediated in tertiary amine-functionalized ionic liquids (ILs) to convert H2S into mercaptan alcohols with enols. The effect of ILs, substrate scope, and regeneration experiments have been investigated. It is found that the conversion of 3-methyl-2-buten-1-ol by H2S can reach 52% with a 50% (mol) catalyst loading of bis(2-dimethylaminoethyl) ether methoxyacetate within 12 h at 90 ℃. The reaction mechanism was speculated based on theoretical calculation. Besides, a plausible reaction-separation-integrated strategy was further proposed. This work reveals an effective insight into the capture and catalytic conversion of H2S to high valuable mercaptan alcohol, which makes the utilization method of H2S resource universal and has the potentiality for industrial application.

Key words: Ionic liquids, Reaction, Catalysis, Hydrogen sulfide, DFT calculation