Silicon Carbide Supported Palladium‐Iridium Bimetallic Catalysts for Efficient Selective Hydrogenation of Cinnamaldehyde,Chinese Journal of Chemistry

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Silicon Carbide Supported Palladium‐Iridium Bimetallic Catalysts for Efficient Selective Hydrogenation of Cinnamaldehyde
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-02-18 , DOI: 10.1002/cjoc.201900299
Penghui Li _{1,

2} , Yingyong Wang ₁ , Yunwei Wang ₁ , Guoqiang Jin ₁ , Xiang‐Yun Guo _{1,

3} , Xili Tong ₁

Affiliation

Selective hydrogenation of α,β‐unsaturated carbonyls into saturated carbonyls is important to obtain remunerative products. However, it is still a challenge to achieve high activity and selectivity under mild conditions. Herein, Pd, Ir and bimetallic Pd‐Ir nanoparticles were uniformly deposited with high dispersity on the surface of SiC by a facile impregnation method, respectively. The as‐prepared Pd/SiC catalysts efficiently hydrogenate cinnamaldehyde to hydrocinnamaldehyde at room temperature and atmospheric pressure, and the activity of Pd/SiC is observed further enhanced by adding Ir component (conversion of 100%). In addition, the dependence of Pd‐Ir catalyst activity on Pd/Ir molar ratio confirms a synergistic effect between Ir and Pd, which originates from the electron transfer between Pd and Ir.

中文翻译：

碳化硅负载的钯铱双金属催化剂可对肉桂醛进行选择性加氢

α，β-不饱和羰基选择性加氢成饱和羰基对于获得有偿产物很重要。然而，在温和条件下实现高活性和选择性仍然是一个挑战。本文中，通过简便的浸渍方法，分别以高分散性将Pd，Ir和双金属Pd-Ir纳米颗粒均匀地沉积在SiC表面上。所制备的Pd / SiC催化剂在室温和大气压下可将肉桂醛有效氢化为氢肉桂醛，并观察到通过添加Ir组分（转化率100％），Pd / SiC的活性进一步增强。此外，Pd-Ir催化剂活性对Pd / Ir摩尔比的依赖性证实了Ir和Pd之间的协同效应，这是由于Pd和Ir之间的电子转移引起的。

更新日期：2020-02-18

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