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Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin 150080, China
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Catalysts 2018, 8(5), 200; https://doi.org/10.3390/catal8050200
Received: 12 March 2018 / Revised: 17 April 2018 / Accepted: 27 April 2018 / Published: 11 May 2018
(This article belongs to the Special Issue Solid-Supported Reagents in Palladium-Catalyzed Transformations)
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Abstract

A series of Pd-Ni bimetallic catalysts supported on SBA-15 (0.2%Pd-x%Ni/SBA-15, x = 0.4, 0.7, and 1.2) were prepared through the impregnation method combined with the NaBH4 reduction method. X-ray diffraction (XRD), N2 adsorption-desorption, X-ray photoemission spectroscopy (XPS) and transmission electron microscope (TEM) were used to characterize the prepared catalysts. All the synthesized catalysts were evaluated for the liquid-phase hydrogenation of cinnamaldehyde (CAL). The addition of Ni obviously enhanced the CAL conversion and selectivity of C=C hydrogenation to hydrocinnamaldehyde (HALD) over the 0.2%Pd-x%Ni/SBA-15 catalysts. Meanwhile, 0.2%Pd-1.2%Ni/SBA-15 showed the best performance with 96.3% conversion and 87.8% selectivity toward HALD. This improvement was attributed to the synergistic effect between the Pd and Ni nanoparticles, enhancing the dispersion of Pd metal particles and increasing the content of surface Pd0 species. In addition, the influences of a few reaction factors including H2 pressure, reaction temperature, and reaction time were studied over 0.2%Pd-1.2%Ni/SBA-15. View Full-Text
Keywords: selective hydrogenation; cinnamaldehyde; hydrocinnamaldehyde; synergistic effect; Pd-Ni/SBA-15 selective hydrogenation; cinnamaldehyde; hydrocinnamaldehyde; synergistic effect; Pd-Ni/SBA-15
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Han, S.; Liu, Y.; Li, J.; Li, R.; Yuan, F.; Zhu, Y. Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde. Catalysts 2018, 8, 200.

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