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Rich surface Co(III) ions-enhanced Co nanocatalyst benzene/toluene oxidation performance derived from (CoCoIII)-Co-II layered double hydroxide
Mo, Shengpeng1,2; Li, Shuangde1; Li, Jiaqi1,2; Deng, Yuzhou1,2; Peng, Shengpan1,2; Chen, Jiayuan1,2; Chen, Yunfa1
2016
Source PublicationNANOSCALE
ISSN2040-3364
Volume8Issue:34Pages:15763-15773
Abstract

A hierarchical Co-2.8(II) Co-1(III) layered double hydroxide (LDH) nanostructure was constructed through a facile topochemical transformation route under a dynamic oxygen atmosphere. Self-assembled coral-like CoAl LDH nanostructures via the homogeneous precipitation method were also inspected under different ammonia-releasing reagents and solvents. Benzene and toluene were chosen as probe molecules to evaluate their catalytic performance over the metal oxide CoCoO and CoAlO calcined from their corresponding LDH precursors. Nanocatalyst of trivalent Co ions replaced Al3+ ions in the bruited-like layer had a higher catalytic activity (T-99(benzene) = 210 degrees C and T-99(toluene) = 220 degrees C at a space velocity = 60 000 mL g(-1) h(-1)). Raman spectroscopy, XPS and H-2-TPR demonstrated the existence of abundant high valence Co ions that serve as active sites. TPD verified the types of active oxygen species and surface acid properties. It was concluded that the high valence Co ions induced excellent low-temperature reducibility. Surface Lewis acid sites and the surface O-ads/O-latt molar ratio (0.61) played relevant roles in determining its catalytic oxidation performance. Our design in this work provides a promising approach for the development of nanocatalysts with exposed desirable defects.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c6nr04902h
Indexed BySCI
Language英语
WOS KeywordHYDROTALCITE-LIKE COMPOUNDS ; VOLATILE ORGANIC-COMPOUNDS ; CATALYTIC-ACTIVITY ; BENZENE OXIDATION ; OXIDE CATALYSTS ; METHANE COMBUSTION ; TOLUENE COMBUSTION ; MESOPOROUS CO3O4 ; CARBON-MONOXIDE ; COBALT OXIDE
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Natural Science Foundation of China(21401200) ; strategic project of science and technology of Chinese Academy of Sciences(XDB05050000) ; National Key Technology Support Program(2014BAC21B)
WOS IDWOS:000382053300040
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21462
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Mo, Shengpeng,Li, Shuangde,Li, Jiaqi,et al. Rich surface Co(III) ions-enhanced Co nanocatalyst benzene/toluene oxidation performance derived from (CoCoIII)-Co-II layered double hydroxide[J]. NANOSCALE,2016,8(34):15763-15773.
APA Mo, Shengpeng.,Li, Shuangde.,Li, Jiaqi.,Deng, Yuzhou.,Peng, Shengpan.,...&Chen, Yunfa.(2016).Rich surface Co(III) ions-enhanced Co nanocatalyst benzene/toluene oxidation performance derived from (CoCoIII)-Co-II layered double hydroxide.NANOSCALE,8(34),15763-15773.
MLA Mo, Shengpeng,et al."Rich surface Co(III) ions-enhanced Co nanocatalyst benzene/toluene oxidation performance derived from (CoCoIII)-Co-II layered double hydroxide".NANOSCALE 8.34(2016):15763-15773.
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