English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Effect of reduction-oxidation treatment on structure and catalytic properties of ordered mesoporous Cu-Mg-Al composite oxides

Lu, J., Zhang, J., Jiao, C., Megarajan, S. K., Gu, D., Yang, G., et al. (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. doi:10.1007/s11434-015-0805-0.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Lu, Jingting1, 2, Author
Zhang, Jan2, Author
Jiao, Chengli2, Author
Megarajan, Suresh Kumar2, Author
Gu, Dong3, Author              
Yang, Guocheng1, Author
Jiang, Heqing2, 3, Author              
Jia, Chunjiang4, Author              
Schüth, Ferdi3, Author              
Affiliations:
1School of Chemistry and Life Science, Changchun University of Technology, Changchun, 130012, China, ou_persistent22              
2 Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China , ou_persistent22              
3Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
4Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445617              

Content

show
hide
Free keywords: Cu–Mg–Al oxides Evaporation-induced self-assembly Mesoporous materials Migration CO oxidation
 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 H2 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.

Details

show
hide
Language(s): eng - English
 Dates: 2015-05-092015-06-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s11434-015-0805-0
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Science Bulletin
  Other : Chin. Sci. Bull.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Beijing, China : Chinese Academy of Sciences
Pages: - Volume / Issue: 60 (12) Sequence Number: - Start / End Page: 1108 - 1113 Identifier: ISSN: 1001-6538
CoNE: https://pure.mpg.de/cone/journals/resource/954925584230