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Study Data from Dalian University of Technology Update Understanding of Molecular Catalysis (Oxidative dehydrogenation of propane over nanodiamond...

September 12, 2014



Study Data from Dalian University of Technology Update Understanding of Molecular Catalysis (Oxidative dehydrogenation of propane over nanodiamond modified by molybdenum oxide)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Molecular Catalysis have been published. According to news originating from Liaoning, People's Republic of China, by NewsRx correspondents, research stated, "MoOx-modified nanodiamond (ND) catalysts were investigated for oxidative dehydrogenation (ODH) of propane. The catalysts were prepared by impregnation method and characterized by TEM, XRD, XPS, Raman and FTIR spectroscopies."

Our news journalists obtained a quote from the research from the Dalian University of Technology, "ND was found a better carrier than carbon nanotubes (CNTS) for MoOx dispersion. The MoOx species are two-dimensional polymerized MoOx which get covalently bonded onto the ND surface via Mo-O-C bonds. A major portion of Mo6+ species was found, together with a small amount of Mo4+ species. Adding 1 wt% MoOx on ND (1Mo) can increase both propane conversion and propene selectivity, whereas excess MoOx leads to a drastically decrease in propene selectivity due to the aggregation of the MoOx species and the coverage of the active sites of ND. Both ND and 1MoO(x)/ND catalysts show good stability after a few hours of testing. A sp(3)-sp(2) hybrid structure is formed in situ and the ketonic/diketonic carbonyl groups are generated during the reaction, which are believed to be favourable to the reaction."

According to the news editors, the research concluded: "Our results indicate the modification of ND by low-loading MoOx can improve the selectivity at the same conversion rate, thus enhance the propene yield."

For more information on this research see: Oxidative dehydrogenation of propane over nanodiamond modified by molybdenum oxide. Journal of Molecular Catalysis A-Chemical, 2014;392():315-320. Journal of Molecular Catalysis A-Chemical can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Molecular Catalysis).

The news correspondents report that additional information may be obtained from G. Xiong, Dalian University of Technology, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, People's Republic of China.

Keywords for this news article include: Liaoning, People's Republic of China, Asia, Molecular Catalysis

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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