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  In Situ X-ray Diffraction Study of Co–Al Nanocomposites as Catalysts for Ammonia Decomposition

Gu, Y.-Q., Fu, X.-P., Du, P.-P., Gu, D., Jin, Z., Huang, Y.-Y., et al. (2015). In Situ X-ray Diffraction Study of Co–Al Nanocomposites as Catalysts for Ammonia Decomposition. The Journal of Physical Chemistry C, 119(30), 17102-17110. doi:10.1021/acs.jpcc.5b02932.

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 Creators:
Gu, Ying-Qiu1, Author
Fu, Xin-Pu1, Author
Du, Pei-Pei2, Author
Gu, Dong3, Author              
Jin, Zhao1, Author
Huang, Yu-Ying2, Author
Si, Rui2, Author
Zheng, Li-Qiang1, Author
Song, Qi-Sheng1, Author
Jia, Chun-Jiang1, Author
Weidenthaler, Claudia4, Author              
Affiliations:
1Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China, ou_persistent22              
2Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China, ou_persistent22              
3Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
4Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950291              

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 Abstract: Co–Al nanocomposite materials as active and stable catalysts for ammonia decomposition have been synthesized by a one-pot evaporation-induced self-assembly method. The catalysts were characterized by various techniques including powder X-ray diffraction (XRD), X-ray absorption fine structure (XAFS), X-ray photoelectron spectroscopy (XPS), N2 adsorption/desorption, and transmission/scanning electron microscopy (TEM/SEM). Especially, in situ XRD under catalytic reaction conditions was performed, and metallic Co with a cubic structure was identified to be most probably the active crystalline phase for the decomposition of ammonia; also, contribution of CoO to the catalytic activity cannot be excluded. Most importantly, the introduction of alumina can significantly suppress the agglomeration of the active metallic Co phase and thus maintain the high activity of the cobalt catalyst.

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Language(s): eng - English
 Dates: 2015-03-272015-07-032015-07-30
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.jpcc.5b02932
 Degree: -

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Title: The Journal of Physical Chemistry C
  Abbreviation : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 119 (30) Sequence Number: - Start / End Page: 17102 - 17110 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766