首页|Efficiently catalytic transfer hydrogenation and fast separation of unsaturated alkene compounds over Pd/UiO-66 under green conditions
Efficiently catalytic transfer hydrogenation and fast separation of unsaturated alkene compounds over Pd/UiO-66 under green conditions
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Stable Pd nanoparticles(Pd NPs)have been uniformly dispersed and immobilized into the metal-organic framework of UiO-66,Pd/UiO-66,by a facile impregnation reduction method.Pd/UiO-66 retains the integrity of the UiO-66 crystal structure and incorporated with ultrasmall Pd NPs(1.70 ± 0.32 nm).Using ammonium formate(AF)as a H-donor and water as solvent under green condition,the optimized 1.16 wt% Pd/UiO-66 catalyst exhibits remarkable activity in the catalytic transfer hydrogenation(CTH)of a-mefhylstyrene(AMS)into cumin(achieving 99.6% conversion of AMS and almost full selectivity to cumin with an extremely high turnover frequency value 456.7 h~(-1)at 323.15 K).Pd/UiO-66 also show superior catalytic activity in CTH of unsaturated alkene compounds to saturated compounds with excellent stability and recyclability.Furthermore,the as-formed saturated alkanes can be fast and automatic separated easily from the aqueous catalytic media.This study supplies a general method for immobilizing ultrafine Pd nanoparticles into crystalline MOFs and a"green"path for hydrogenation of unsaturated alkene compounds.
Pd nanoparticlesUiO-66Catalytic transfer hydrogenationGreen conditionsUnsaturated alkene compounds
Liangliang Tong、Xinluo Song、Zhongdong Hua
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School of Chemical Engineering,Changchun University of Technology,Changchun 130012,China
NSTL
