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首页> 外文期刊>Catalysis science & technology >Xylan-type hemicellulose supported palladium nanoparticles: a highly efficient and reusable catalyst for the carbon-carbon coupling reactions
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Xylan-type hemicellulose supported palladium nanoparticles: a highly efficient and reusable catalyst for the carbon-carbon coupling reactions

机译:Xylan型半纤维素支持的钯纳米颗粒:一种高效且可重复使用的催化剂,用于碳碳偶联反应

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摘要

Palladium nanoparticles (PdNPs) were successfully prepared using xylan-type hemicellulose (XH) as a support and used for the first time as an efficient and recyclable catalytic system in organic synthesis. The morphology, composition, and thermal stability of the catalyst were studied by means of TEM, XPS, XRD, FT-IR, and TGA. The as-prepared catalyst was further catalytically tested in various C-C cross-coupling reactions and exhibited excellent catalytic activity in the Suzuki, Heck, and Sonogashira coupling reactions. The catalyst could be easily recovered by simple filtration and reused at least six times without significant loss of its catalytic activity. This work demonstrates the possibility of using XH as an efficient support for catalysis.
机译:钯纳米颗粒(PDNP)成功地使用Xylan型半纤维素(XH)作为支持,并首次用作有机合成中的有效且可回收的催化系统。 通过TEM,XPS,XRD,FT-IR和TGA研究了催化剂的形态,组成和热稳定性。 在各种C-C交叉偶联反应中进一步催化了准备的催化剂,并在Suzuki,Heck和Sonogashira偶联反应中表现出极好的催化活性。 可以通过简单的过滤轻松回收催化剂,并至少重复使用六次,而不会显着丧失其催化活性。 这项工作证明了使用XH作为有效支持催化的可能性。

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