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The role of H2O in the removal of methane mercaptan (CH3SH) on Cu/C-PAN catalyst
Applied Surface Science ( IF 6.7 ) Pub Date : 2021-08-05 , DOI: 10.1016/j.apsusc.2021.150851
Yishan Zhang 1 , Kai Li 1 , Xin Sun 1 , Xin Song 1 , Fei Wang 1 , Chi Wang 2 , Ping Ning 1 , Hong He 3, 4, 5
Affiliation  

Methane mercaptan (CH3SH) is a common organic sulfur in smelting flue gas, which has significant harm to the environment, industrial production and human health. Therefore, research on the purification of CH3SH has received extensive attention. Herein, we focused on the role of H2O in the removal of CH3SH, and revealed that H2O promotes the adsorption of CH3SH at low temperature and promotes its hydrolysis at high temperature, which significantly improves the removal of CH3SH. In this study, the polyacrylonitrile-based activated carbon fiber was prepared by electrospinning, with the diameter of about 300~400 nm. Cu, Fe and Mn were loaded by impregnation method, and the CH3SH removal efficiency were compared. The combination of characterization results by HR-TEM, XRD, XPS, NH3-TPD and activity evaluation as well as DFT calculation results finally revealed the removal mechanism of CH3SH with the participation of H2O.



中文翻译:

H2O 在 Cu/C-PAN 催化剂上去除甲硫醇 (CH3SH) 中的作用

甲烷硫醇(CH 3 SH)是冶炼烟气中常见的有机硫,对环境、工业生产和人体健康有重大危害。因此,对CH 3 SH纯化的研究受到了广泛关注。在此,我们重点研究了 H 2 O 在去除 CH 3 SH 中的作用,发现 H 2 O在低温下促进CH 3 SH吸附并在高温下促进其水解,显着提高了 CH 去除率3SH。本研究采用静电纺丝法制备聚丙烯腈基活性炭纤维,直径约300~400 nm。Cu、Fe、Mn采用浸渍法负载,比较了CH 3 SH去除效率。HR-TEM、XRD、XPS、NH 3 -TPD表征结果与活性评价以及DFT计算结果相结合,最终揭示了H 2 O参与下CH 3 SH的去除机理。

更新日期:2021-08-10
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