Promotion effect of the S-l zeolite microenvironment on confined Pd nanoparticles for the selective hydrogenation of nitrile

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外文摘要：Zeolite-tailored encapsulation of metal nanoparticles exhibits prominent catalytic performance in many especially for selective hydrogenation reaction due to the modulation effect of the zeolite microenviron Here,Pd nanoparticles encapsulated in MFI zeolite by an in-situ encapsulation method were first used i selective hydrogenation of nitrile into a primary amine.After introducing KOH for mediating the acic property of zeolite microenvironment,the as-synthesized Pd@S-1-K manifested an improved selectivity i synthesis of primary amine from nitrile,while outperformed both commercial catalysts and convention supported on zeolite catalyst.The remarkable performance of Pd@S-1-K could be attributed to both the property of the S-1-K zeolite for inhibiting the side reactions and the highly dispersed and ultrasmall Pd cl1 for superior catalytic activity.Besides,the best yield of 81% was achieved at 80 ℃,5 bar H2,2 h in ami solution via optimization experiments,and the moderate applicability of Pd@S-1-K catalyst was obtain substrate scope test.

外文关键词：

Zeolite microenvironmentPd nanoparticlesEncapsulationNitrileSelective hydrogenation

作者：

Xiu-Zhi Wei、Jianguo Liu、Qiqi Lu

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作者单位：

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing,210096,PR China

Department of Engineering Science,University of Science and Technology of China,Hefei,230026,China

CAS Key Laboratory of Renewable Energy,Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou,510640,China

出版年：

2022

DOI：

10.1016/j.micromeso.2022.112086

Microporous and mesoporous materials

EISCI

ISSN：1387-1811

年,卷(期)：2022.341

被引量4
参考文献量38