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Removal of low concentration CH3SH with regenerable Cu-doped mesoporous silica
Peng, Shengpan1,2; Li, Wenhui1,2; Deng, Yuzhou1,2; Li, Weiman1,2,3; Ma, Xiang1,2; Chen, Yunfa1,3

Mercaptans are highly volatile compounds responsible for disagreeable odors and very low olfactory threshold, especially for CH3SH (0.4 ppvb). To the best knowledge of us, approach for controlling low concentrated odors (i.e. 1-10 ppm) is scarcely reported. In this research, Cu-doped mesoporous silica was synthesized for removal of low-concentrated CH3SH. The as-prepared samples show considerably thermal and mechanical stability and could be thermal-regenerated. Copper loading ratio and humidity have significant impacts on eliminating odors. According to XRD, TEM, BET, NMR and EPR, we deduce that surface groups on CuO nanoparticles and the Si-O-Cu group are highly possibly transformed into a hydrated complex which is much more effective in capturing CH3SH with its empty Cu-3d orbit. Although CH3SH has to compete with water for absorption sites, it is always the "winner" owing to the strong chelating ability between-SH group and Cu (II). (C) 2017 Elsevier Inc. All rights reserved.

KeywordCh3sh Removal Copper Mesoporous Silica Regeneration Absorption Mechanism
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordSolid Acid Catalysts ; Electron-paramagnetic-resonance ; Modified Activated Carbon ; Hzsm-5 Zeolite Catalysts ; Methyl Mercaptan ; Selective Adsorption ; Hydrogen-sulfide ; Waste-water ; Copper ; Decomposition
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationStrategic Project of Science and Technology of Chinese Academy of Science(XDB05050400) ; National Science and Technology(2014BAC21B00)
WOS IDWOS:000428834900093
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Peng, Shengpan,Li, Wenhui,Deng, Yuzhou,et al. Removal of low concentration CH3SH with regenerable Cu-doped mesoporous silica[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,513:903-910.
APA Peng, Shengpan,Li, Wenhui,Deng, Yuzhou,Li, Weiman,Ma, Xiang,&Chen, Yunfa.(2018).Removal of low concentration CH3SH with regenerable Cu-doped mesoporous silica.JOURNAL OF COLLOID AND INTERFACE SCIENCE,513,903-910.
MLA Peng, Shengpan,et al."Removal of low concentration CH3SH with regenerable Cu-doped mesoporous silica".JOURNAL OF COLLOID AND INTERFACE SCIENCE 513(2018):903-910.
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