Abstract
The effect of sodium promotion on the selective hydrogenation of 4-isobutylacetophenone, 4-IBAP, was investigated over a Pd/C catalyst. A precipitation and deposition method was used to prepare the catalyst, and sodium was promoted on the Pd/C catalyst via post-impregnation while varying the sodium content. The sodium-promoted Pd/C catalyst resulted in a significantly improved yield greater than 96% of the desired product, 1-(4-isobutylphenyl) ethanol (4-IBPE), compared with the non-patented literature results under a mild hydrogenation condition. A detailed hydrogenation network over the Pd/C catalyst was suggested. The reaction mechanism for the yield and selectivity enhancement of 4-IBPE induced-by the promoted Pd/C was elucidated in relation to the geometric and electronic effects of reactant molecules in the microporous support depending on the reaction steps.
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Cho, HB., Lee, B.U., Ryu, CH. et al. Selective hydrogenation of 4-isobutylacetophenone over a sodium-promoted Pd/C catalyst. Korean J. Chem. Eng. 30, 306–313 (2013). https://doi.org/10.1007/s11814-012-0184-z
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DOI: https://doi.org/10.1007/s11814-012-0184-z