Ni-Cu Hydrotalcite-Derived Mixed Oxides as Highly Selective and Stable Catalysts for the Synthesis of β-Branched Bioalcohols by the Guerbet Reaction

被引:24
作者
Hernandez, Willinton Y. [1 ]
De Vlieger, Kevin [1 ,2 ]
Van Der Voort, Pascal [1 ]
Verberckmoes, An [2 ]
机构
[1] Univ Ghent, Dept Inorgan & Phys Chem, COMOC, Krijgslaan 281-S3, B-9000 Ghent, Belgium
[2] Univ Ghent, Dept Chem Engn & Tech Chem, Ind Catalysis & Adsorpt Technol INCAT, Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium
关键词
alcohols; Guerbet reaction; heterogeneous catalyis; layered double hydroxides; mixed metal oxides; METHANOL/N-PROPANOL CONDENSATION; MG-AL HYDROTALCITE; SECONDARY ALCOHOLS; COPPER; SYSTEMS; PRECURSORS; ISOBUTANOL; OXIDATION; BUTANOL; RHODIUM;
D O I
10.1002/cssc.201601042
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of Ni-Cu hydrotalcite-derived mixed oxides have been synthesized and evaluated as heterogeneous catalysts for the dimerization of linear aliphatic alcohols to afford beta-branched Guerbet alcohols. The use of the hydrotalcite-structured catalyst precursor highly favors the catalyst stability. This Cu/Ni catalyst has an enhanced reducibility of Ni2+ species under reaction conditions, favoring the hydrogen transfer and hydrogenation capacity of the catalyst system. Catalytic results are reported for C-8, mixed C-8/C-10, and C-18 alcohol feeds, with full conversions and Guerbet product purities of 72.5-96 %.
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页码:3196 / 3205
页数:10
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