Catalysts based on Rh(III)-hexamolybdate/γ-Al2O3 and their application in the selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde
作者： Guillermo R. Bertolini , Carmen I. Cabello , Mercedes Muñoz , Mónica Casella , Delia Gazzoli
DOI: 10.1016/J.MOLCATA.2012.09.013
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摘要: Abstract Several catalysts based on [RhMo6O24H6]3− (RhMo6) heteropolyanion supported γ-Al2O3 with different textural properties were prepared, characterized and tested in the liquid-phase hydrogenation of cinnamaldehyde. The characterization pure systems was carried out using several techniques including XRD, SEM-EDS microscopy, Raman microprobe, X-ray photoelectron spectroscopies temperature programmed reduction (TPR). catalytic performance monitored by conversion starting cinnamaldehyde as a function time: initial activities represented turnover frequency (TOF), measured considering surface Rh atoms. planar RhMo6/(EI) showed enhanced activity over RhMo conventional catalyst obtained successive impregnation both transition metal ions (Rh(III) chloride heptamolybdate). selectivity for RhMo6 mainly toward HCAL unlike which CA. This study also synergetic effect between Mo through promoted reducibility.
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