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Oxidant‐free Dehydrogenation of Glycerol to Lactic Acid by Heterogeneous Platinum Catalysts
Author(s) -
Siddiki S. M. A. Hakim,
Touchy Abeda S.,
Kon Kenichi,
Toyao Takashi,
Shimizu Kenichi
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201700099
Subject(s) - dehydrogenation , catalysis , chemistry , selectivity , lactic acid , platinum , glycerol , yield (engineering) , transition metal , metal , turnover number , inorganic chemistry , solvent , organic chemistry , materials science , metallurgy , biology , bacteria , genetics
Among various supported metal nanoparticle catalysts, Pt‐loaded carbon (Pt/C) catalysts, including a commercial one, showed the highest yield for selective dehydrogenation of glycerol to lactic acid under oxidant‐free, solvent‐free, and alkaline conditions. For the reaction with Pt/C, the effects of conditions (type of basic additives, the amount of water, atmosphere, reactor) on the catalytic activity and selectivity were studied. Combined with a reaction pathway in the literature and our result of control reactions, we proposed a strategy for decreasing the selectivity of byproducts. The optimized conditions gave a high turnover number of 69 000. To clarify the structural factors affecting the catalytic activity, we show the effect of electronic states of various transition metals on the activity as well as the effect of Pt particle size on the turnover frequency per surface Pt atom.