TY - JOUR
T1 - Highly dispersed Pd nanoparticles confined in ZSM-5 zeolite crystals for selective hydrogenation of cinnamaldehyde
AU - Alfilfil, Lujain
AU - Ran, Jiansu
AU - Chen, Cailing
AU - Dong, Xinglong
AU - Wang, Jianjian
AU - Han, Yu
N1 - KAUST Repository Item: Exported on 2021-11-26
Acknowledgements: J. W. acknowledges the financial support from the National Natural Science Foundation of China (21902016) and Fundamental Research Funds for the Central Universities (2019CDQYHG026).
PY - 2021/11/16
Y1 - 2021/11/16
N2 - Selective hydrogenation of α,β-unsaturated aldehyde catalyzed by supported Pd nanoparticles (NPs) is challenging, especially under harsh reaction conditions. Here, we report a facile method to prepare a catalyst composed of highly dispersed Pd NPs (∼2.6 nm) confined in zeolite ZSM-5 crystals. When used in the hydrogenation of cinnamaldehyde, the prepared catalyst (Pd@SG-ZSM-5) exhibited excellent performance for the selective production of hydrocinnamaldehyde (HCAL) due to the confinement effect. Compared with the traditional supported Pd catalyst prepared by impregnation, Pd@SG-ZSM-5 showed a 2.5-fold enhancement in the HCAL selectivity (73% vs. 30%). Liquid adsorption combined with infrared spectroscopy characterization revealed that compared with the traditional catalyst, Pd@SG-ZSM-5 adsorbed much less reactant as well as product molecules and desorbed the generated HCAL quickly, thereby suppressing the formation of by-products and leading to high selectivity of HCAL.
AB - Selective hydrogenation of α,β-unsaturated aldehyde catalyzed by supported Pd nanoparticles (NPs) is challenging, especially under harsh reaction conditions. Here, we report a facile method to prepare a catalyst composed of highly dispersed Pd NPs (∼2.6 nm) confined in zeolite ZSM-5 crystals. When used in the hydrogenation of cinnamaldehyde, the prepared catalyst (Pd@SG-ZSM-5) exhibited excellent performance for the selective production of hydrocinnamaldehyde (HCAL) due to the confinement effect. Compared with the traditional supported Pd catalyst prepared by impregnation, Pd@SG-ZSM-5 showed a 2.5-fold enhancement in the HCAL selectivity (73% vs. 30%). Liquid adsorption combined with infrared spectroscopy characterization revealed that compared with the traditional catalyst, Pd@SG-ZSM-5 adsorbed much less reactant as well as product molecules and desorbed the generated HCAL quickly, thereby suppressing the formation of by-products and leading to high selectivity of HCAL.
UR - http://hdl.handle.net/10754/673769
UR - https://linkinghub.elsevier.com/retrieve/pii/S1387181121006922
UR - http://www.scopus.com/inward/record.url?scp=85119297752&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2021.111566
DO - 10.1016/j.micromeso.2021.111566
M3 - Article
SN - 1387-1811
SP - 111566
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -