Hydrodeoxygenation of benzyl alcohol on transition-metal-containing mixed oxides catalysts derived from layered double hydroxide precursors

被引:13
|
作者
Rizescu, Claudiu [1 ]
Sun, Chao [2 ]
Popescu, Ionel [3 ]
Urda, Adriana [1 ,3 ]
Da Costa, Patrick [2 ]
Marcu, Ioan-Cezar [1 ,3 ]
机构
[1] Univ Bucharest, Fac Chem, Dept Organ Chem Biochem & Catalysis, Lab Chem Technol & Catalysis, 4-12 Blvd Regina Elisabeta, Bucharest 030018, Romania
[2] Sorbonne Univ, Inst Jean Le Rond dAlembert, Equipe Combust Energie Propre & Turbulence, CNRS UMR 7190, 2 Pl Gare Ceinture, F-78210 St Cyr Lecole, France
[3] Univ Bucharest, Fac Chem, Res Ctr Catalysts & Catalyt Proc, 4-12 Blvd Regina Elisabeta, Bucharest 030018, Romania
关键词
Transition-metal; Copper; LDH; Catalytic hydrodeoxygenation; Benzyl alcohol;
D O I
10.1016/j.cattod.2020.04.055
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
M-MgAlO mixed oxide catalysts were prepared by controlled thermal decomposition of layered double hydroxides (LDH) precursors and were tested in the hydrodeoxygenation of benzyl alcohol. LDH with Mg/Al= 3 and 10 at. % M with respect to cations (M = Mn, Fe, Co, Ni, Cu and Zn) were obtained by coprecipitation. A second series of copper-containing catalysts with copper content from 5 to 20 at. % was also prepared. The solids were characterized by X-ray diffraction, N-2 adsorption/desorption, temperature-programmed reduction in H-2 atmosphere, temperature-programmed desorption of CO2. The influence of the transition metal and, for the copper-containing samples, of the copper loading, reaction temperature, reaction time, amount of catalyst and reduction pre-treatment on the catalytic performance were investigated. With 97% alcohol conversion and 96% selectivity to toluene, Cu15MgAlO is the best hydrodeoxygenation catalyst. It was also tested in the hydrodeoxygenation of 1-heptanol.
引用
收藏
页码:235 / 244
页数:10
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