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Removal of volatile odorous organic compounds over NiAl mixed oxides at low temperature
Zhao, Shunzheng1,2; Yi, Honghong1,2; Tang, Xiaolong1,2; Kang, Dongjuan3; Gao, Fengyu1; Wang, Jiangen1; Huang, Yonghai1; Yang, Zhongyu1

In this paper, a series of NiAl hydrotalcite-like compounds (HTLCs) were prepared by the urea-decomposition method. Removal of carbonyl sulfide (COS) and methyl mercaptan (CH4S) over the hydrotalcite-derived oxides (HTO) at low temperature was studied. The Ni3Al-HTO exhibited higher catalytic activities than Ni3Al mixed oxides prepared by physical mixing method (Ni3Al-PM) or impregnation/calcination method (Ni3Al-IC). Based on the characterization, it was found that desulfurization activities are closely tied to the surface acid-base properties of catalysts. CO2-TPD indicates that the basic characteristic of the Ni3Al-HTO is prominent. XPS results showed that there was a strong interaction between Ni and Al element on Ni3Al-HTO. The first principle calculation based on density function theory was applied with the aim to study the change of basic sites. The results showed that Ni3Al-HTO presents a half-metallic characteristic. Electron transfer from the Al and O atom to the Ni atom was observed, which is helpful for the transfer of electrons from the surface and improves the catalytic activity. Analysis of the DRIFT spectra suggests that sulfate species was formed by the action of surface basic sites, resulting in the formation of H2O on the surface. (C) 2017 Elsevier B.V. All rights reserved.

KeywordOdor Vocs Deep Removal Mixed Oxides
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
Indexed BySCI
WOS KeywordHydrotalcite-like Compounds ; Mg-al Hydrotalcite ; Gga Plus u ; Catalytic-oxidation ; Methyl Mercaptan ; Carbonyl Sulfide ; Activated Carbon ; Ethyl-acetate ; Photocatalytic Degradation ; Structured Catalyst
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationChina Postdoctoral Science Foundation(2016M600045) ; Fundamental Research Funds for the Central Universities(FRF-TP-16-060A1)
WOS IDWOS:000423246700081
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Document Type期刊论文
Affiliation1.Univ Sci & Technol Beijing, Dept Environm Engn, Beijing 100083, Peoples R China
2.Beijing Key Lab Resource Oriented Treatment Ind P, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Shunzheng,Yi, Honghong,Tang, Xiaolong,et al. Removal of volatile odorous organic compounds over NiAl mixed oxides at low temperature[J]. JOURNAL OF HAZARDOUS MATERIALS,2018,344:797-810.
APA Zhao, Shunzheng.,Yi, Honghong.,Tang, Xiaolong.,Kang, Dongjuan.,Gao, Fengyu.,...&Yang, Zhongyu.(2018).Removal of volatile odorous organic compounds over NiAl mixed oxides at low temperature.JOURNAL OF HAZARDOUS MATERIALS,344,797-810.
MLA Zhao, Shunzheng,et al."Removal of volatile odorous organic compounds over NiAl mixed oxides at low temperature".JOURNAL OF HAZARDOUS MATERIALS 344(2018):797-810.
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