Ceria Promoted Cu-Ni/SiO Catalyst for Selective Hydrodeoxygenation of Vanillin.

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ID: 37631
2019
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Abstract
A ceria (CeO) promoted Cu-Ni bimetallic catalyst supported on SiO (Cu-Ni/CeO-SiO) was prepared and evaluated for catalytic hydrodeoxygenation (HDO) of vanillin. Silica supported monometallic Cu and Ni catalysts and bimetallic Cu-Ni catalyst (Cu/SiO, Ni/SiO, and Cu-Ni/SiO), without a ceria promoter, were also synthesized and tested for the same application. The highest conversion of vanillin was achieved with the Cu-Ni/CeO-SiO catalyst. Vanillyl alcohol was the sole product in the initial 2 h, followed by the formation of 2-methoxy-4-methylphenol, which was observed. Characterization of the synthesized catalysts revealed the presence of overlapping crystalline phases of CuO, NiO, and CeO on the Cu-Ni/CeO-SiO surface. We extended our study to find out the results of using CeO as the support of the Cu-Ni bimetallic catalyst (Cu-Ni/CeO). Partial incorporation of Cu and Ni cations into the ceria lattice took place, leading to the decrease of specific surface area and a concomitant compromise in the conversion. In the case of the Cu-Ni/CeO-SiO catalyst, the higher conversion was accredited to the facile formation of Cu active centers by the synergistic interaction between Ce/Ce and Cu/Cu redox couples and the incorporation of oxygen vacancies on the catalyst surface.
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mukherjee2019ceriaacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mukherjee, Deboshree;Singuru, Ramana;Venkataswamy, Perala;Damma, Devaiah;Reddy, Benjaram M;
Journal ACS omega
Year 2019
DOI
10.1021/acsomega.9b00039
URL
Keywords Keywords not found

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