Article ID Journal Published Year Pages File Type
672561 Particuology 2011 6 Pages PDF
Abstract

Amorphous MoNiB/γ-Al2O3 alloy catalysts were prepared by reducing NiCl2·6H2O and (NH4)6Mo7O24·4H2O supported on γ-Al2O3 with NaBH4 as reducing agent. Using liquid-phase hydrogenation of furfural (FFR) as a probe reaction, the activity of MoNiB/γ-Al2O3 was examined. Compared to NiB and NiMoB, NiMoB/γ-Al2O3 exhibited excellent activity and selectivity towards furfuryl alcohol (FFA). After reaction for 3.0 h at 80 °C and 5.0 MPa in methanol, FFR conversion reached 99% with FFA yield of 91%. The effects of doping amount of Mo and calcination temperature before NaBH4 reduction on hydrogenation activity were also investigated. The optimum Mo/Ni atom ratio and calcination temperature were found to be 1:7 and 300 °C, respectively. XRD patterns and SEM images indicated that NiMoB over the surface of γ-Al2O3 was amorphous and highly dispersed, which was responsible for the high thermal stability of the title catalyst.

Graphical abstractUsing liquid-phase hydrogenation of furfural as a probe reaction, the prepared NiMoB/γ-Al2O3 catalyst exhibited excellent activity and selectivity towards furfuryl alcohol. The optimum Mo/Ni atom ratio and calcination temperature were found to be 1:7 and 300̊C, respectively. NiMoB over the surface of γ-Al2O3 was amorphous and highly dispersed, which was responsible for the high thermal stability of the title catalyst.

Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes
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