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Dual Pd-Acid Sites Confined in a Hierarchical Core-Shell Structure for Hydrogenation of Nitrobenzene.

Yi-Tian Wang,Si-Ming Wu,Guo-Qiang Luo,Shi-Tian Xiao,Fu-Fei Pu,Li-Ying Wang,Gang-Gang Chang,Ge Tian,Xiao-Yu Yang

CHEMISTRY-AN ASIAN JOURNAL（2023）

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Abstract
A core-shell structured Pd@TS-1@meso-SiO2 catalyst with confined Pd nanometals has been fabricated by one-pot synthesis, impregnation method and sol-gel method. With the promotion of acid sites and protection of mesoporous silica shell, Pd@TS-1@meso-SiO2 shows higher activity than commercial comparison and higher stability than sample without mesoporous silica shell in the hydrogenation of nitrobenzene. The schematic illustration of the synergy effect is also proposed.
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Key words
Selective Hydrogenation,Hydrogenation,Supported Catalysts
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