HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect
AbstractTwo sets of silica-supported nickel phosphide catalysts with a nickel content of about 2.5 and 10 wt % and Ni/P molar ratio 2/1, 1/1 and 1/2 in each set, were prepared by way of a temperature-programmed reduction method using (Ni(CH3COO)2) and ((NH4)2HPO4) as a precursor. The NixPy/SiO2 catalysts were characterized using chemical analysis N2 physisorption, XRD, TEM, 31P MAS NMR. Methyl palmitate hydrodeoxygenation (HDO) was performed in a trickle-bed reactor at 3 MPa and 290 °C with LHSV ranging from 0.3 to 16 h−1. The Ni/P ratio was found to affect the nickel phosphide phase composition, POx groups content and catalytic properties in methyl palmitate HDO with the TOF increased along with a decline of Ni/P ratio and a growth of POx groups’ content. Taking into account the possible routes of methyl palmitate conversion (metal-catalyzed hydrogenolysis or acid-catalyzed hydrolysis), we proposed that the enhancement of acid POx groups’ content with the Ni/P ratio decrease provides an enhancement of the rate of methyl palmitate conversion through the acceleration of acid-catalyzed hydrolysis. View Full-Text
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Deliy, I.V.; Shamanaev, I.V.; Gerasimov, E.Y.; Pakharukova, V.P.; Yakovlev, I.V.; Lapina, O.B.; Aleksandrov, P.V.; Bukhtiyarova, G.A. HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect. Catalysts 2017, 7, 298.
Deliy IV, Shamanaev IV, Gerasimov EY, Pakharukova VP, Yakovlev IV, Lapina OB, Aleksandrov PV, Bukhtiyarova GA. HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect. Catalysts. 2017; 7(10):298.Chicago/Turabian Style
Deliy, Irina V.; Shamanaev, Ivan V.; Gerasimov, Evgeny Y.; Pakharukova, Vera P.; Yakovlev, Ilya V.; Lapina, Olga B.; Aleksandrov, Pavel V.; Bukhtiyarova, Galina A. 2017. "HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect." Catalysts 7, no. 10: 298.
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