Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
To the nature of the support effect in palladium-catalyzed aqueous-phase hydrogenation of maleic acid. / Kulagina, M. A.; Simonov, P. A.; Gerasimov, E. Yu и др.
в: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Том 526, 05.08.2017, стр. 29-39.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - To the nature of the support effect in palladium-catalyzed aqueous-phase hydrogenation of maleic acid
AU - Kulagina, M. A.
AU - Simonov, P. A.
AU - Gerasimov, E. Yu
AU - Kvon, R. I.
AU - Romanenko, A. V.
PY - 2017/8/5
Y1 - 2017/8/5
N2 - Influence of the support nature on catalytic properties of the supported Pd nanoparticles in liquid-phase (water, ethanol) hydrogenation of maleic acid (MA) to succinic one was extensively studied. Different oxides (SiO2, diatomites, WO3, Ta2O5, Nb2O5, V2O5, TiO2, CeO2, ZrO2, Ga2O3, In2O3, Cr2O3, Fe2O3, Al2O3), salts (CaF2, BaSO4) and carbon supports either with extremely low or high porosity were employed as the catalyst supports. XPS studies of the catalysts revealed no significant support-induced changes of the electronic state of the active component. For palladium on non-porous supports, its TOF values in MA hydrogenation turned to be constant in ethanol medium but varied with the support nature in water. In the case of porous supports, the TOFs diminished in both media and were governed by mean pore size and surface acidity of the supports. The dependence of TOF values on mean distance between adjacent Pd nanoparticles is also revealed. The catalytic results are explained by the presence of the electric double layer at the catalyst-solution interface, which affect its catalytic performance.
AB - Influence of the support nature on catalytic properties of the supported Pd nanoparticles in liquid-phase (water, ethanol) hydrogenation of maleic acid (MA) to succinic one was extensively studied. Different oxides (SiO2, diatomites, WO3, Ta2O5, Nb2O5, V2O5, TiO2, CeO2, ZrO2, Ga2O3, In2O3, Cr2O3, Fe2O3, Al2O3), salts (CaF2, BaSO4) and carbon supports either with extremely low or high porosity were employed as the catalyst supports. XPS studies of the catalysts revealed no significant support-induced changes of the electronic state of the active component. For palladium on non-porous supports, its TOF values in MA hydrogenation turned to be constant in ethanol medium but varied with the support nature in water. In the case of porous supports, the TOFs diminished in both media and were governed by mean pore size and surface acidity of the supports. The dependence of TOF values on mean distance between adjacent Pd nanoparticles is also revealed. The catalytic results are explained by the presence of the electric double layer at the catalyst-solution interface, which affect its catalytic performance.
KW - Electric double layer
KW - Liquid-phase hydrogenation
KW - Maleic acid
KW - Metal-support interaction
KW - Palladium catalyst
KW - Solvent effect
KW - RATES
KW - KINETICS
KW - SIZE
KW - DIFFUSION
KW - LAYER
KW - SOLVENT
UR - http://www.scopus.com/inward/record.url?scp=85007452377&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2016.11.037
DO - 10.1016/j.colsurfa.2016.11.037
M3 - Article
AN - SCOPUS:85007452377
VL - 526
SP - 29
EP - 39
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -
ID: 9032021