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Effect of reduction-oxidation treatment on structure and catalytic properties of ordered mesoporous Cu-Mg-Al composite oxides
Lu, Jingting1,2; Zhang, Yan2; Jiao, Chengli2; Megarajan, Suresh Kumar2; Gu, Dong3; Yang, Guocheng1; Jiang, Heqing2; Jia, Chunjiang4; Schueth, Ferdi3
2015-06-01
Source PublicationSCIENCE BULLETIN
Volume60Issue:12Pages:1108-1113
Abstract

Ordered mesoporous Cu-Mg-Al composite oxides were synthesized via the one-pot evaporation-induced self-assembly strategy. Using this method, copper was first homogeneously incorporated into the ordered mesoporous spinel matrix. After H-2 reduction treatment, according to X-ray diffraction (XRD) and transmission electron microscopy (TEM) results, copper existed as metallic nanoparticles with the size of 6-10 nm that well decorated the parent mesoporous skeleton. The metallic nanoparticles were then re-oxidized to copper oxide when exposed to air or during CO oxidation reaction at low temperatures. Thus, copper migrated from bulk spinel phase to the surface after the reduction-oxidation treatment. Moreover, the copper on the surface was re-incorporated into the bulk spinel phase by further thermal treatment at much higher temperature in the presence of air. The correlation between the state of copper in the mesoporous composite oxides and the catalytic performance toward CO oxidation was studied. It was found that copper existed as oxide nanoparticles on the surface of mesoporous Mg-Al skeleton is much more active than that existed as lattice Cu ions in spinel phase.

SubtypeArticle
KeywordCu-mg-al Oxides Evaporation-induced Self-assembly Mesoporous Materials Migration Co Oxidation
WOS HeadingsScience & Technology
DOI10.1007/s11434-015-0805-0
WOS KeywordTEMPERATURE CO OXIDATION ; LOW NOX OPTIONS ; CRYSTALLOGRAPHIC SITES ; EMISSION CONTROL ; CARBON-MONOXIDE ; DIMETHYL ETHER ; IN-SITU ; COMBUSTION ; ALUMINA ; METHANE
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000356538300007
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/6460
Collection膜分离与催化团队
Affiliation1.Changchun Univ Technol, Sch Chem & Life Sci, Changchun 130012, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biobased Mat, Qingdao 266101, Peoples R China
3.Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany
4.Shandong Univ, Sch Chem & Chem Engn, Key Lab Colloid & Interface Chem, Key Lab Special Aggregated Mat, Jinan 250100, Peoples R China
Recommended Citation
GB/T 7714
Lu, Jingting,Zhang, Yan,Jiao, Chengli,et al. Effect of reduction-oxidation treatment on structure and catalytic properties of ordered mesoporous Cu-Mg-Al composite oxides[J]. SCIENCE BULLETIN,2015,60(12):1108-1113.
APA Lu, Jingting.,Zhang, Yan.,Jiao, Chengli.,Megarajan, Suresh Kumar.,Gu, Dong.,...&Schueth, Ferdi.(2015).Effect of reduction-oxidation treatment on structure and catalytic properties of ordered mesoporous Cu-Mg-Al composite oxides.SCIENCE BULLETIN,60(12),1108-1113.
MLA Lu, Jingting,et al."Effect of reduction-oxidation treatment on structure and catalytic properties of ordered mesoporous Cu-Mg-Al composite oxides".SCIENCE BULLETIN 60.12(2015):1108-1113.
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