Selective Production of 2-Methylfuran by Gas-Phase Hydrogenation of Furfural on Copper Incorporated by Complexation in Mesoporous Silica Catalysts.
Copper species have been incorporated in mesoporous silica (MS) through complexation with the amine groups of dodecylamine, which was used as a structure-directing agent in the synthesis. A series of Cu/SiO2catalysts (xCu-MS) with copper loadings (x) from 2.5 to 20 wt % was synthesized and evaluated in the gas-phase hydrogenation of furfural (FUR). The most suitable catalytic performance in terms of 2-methylfuran yield was obtained with an intermediate copper content (10 wt %). This 10Cu-MS catalyst exhibits a 2-methylfuran yield higher than 95 mol % after 5 h time-on-stream (TOS) at a reaction temperature of 210 °C with a H2/FUR molar ratio of 11.5 and a weight hourly space velocity (WHSV) of 1.5 h-1. After 14 h TOS, this catalyst still showed a yield of 80 mol %. In all cases, carbonaceous deposits on the external surface were the cause of the catalyst deactivation, although sintering of the copper particles was observed for higher copper loadings. This intermediate copper loading (10 wt %) offered a suitable balance between resistance to sintering and tendency to form carbonaceous deposits.
Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Universidad de Málaga, Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain.
Carmen Pilar
CP
Jiménez-Gómez
Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Universidad de Málaga, Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain.
Juan A
0000-0001-5742-4822
JA
Cecilia
Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Universidad de Málaga, Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain.
Ramón
0000-0002-3704-1215
R
Moreno-Tost
Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Universidad de Málaga, Facultad de Ciencias, Campus de Teatinos, 29071, Málaga, Spain.
Pedro
0000-0002-7610-6042
P
Maireles-Torres
D000588:Amines / Q000737:chemistry; D001274:Atmospheric Pressure; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D005662:Furaldehyde / Q000737:chemistry*; D005663:Furans / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D006865:Hydrogenation; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D000588:Amines; D005663:Furans; C029060:2-methylfuran; D012822:Silicon Dioxide; D003300:Copper; D006859:Hydrogen; D005662:Furaldehyde
biomass; copper; mesoporous materials; nanoparticles; oxygen heterocycles