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首页> 外文期刊>Clay Minerals >Copper supported on acid-activated vermiculite as an efficient and recyclable catalyst for the Biginelli reaction: a green approach
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Copper supported on acid-activated vermiculite as an efficient and recyclable catalyst for the Biginelli reaction: a green approach

机译:铜活化蛭石上负载作为Biginelli反应的有效和可回收的催化剂:绿色方法

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摘要

The synthesis of copper citrate complex supported on acid-activated vermiculite was investigated with a view to preparing an efficient, mild, robust and recyclable catalyst for the Biginelli reaction. The new catalyst was characterized by X-ray fluorescence (XRF), infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS). Copper citrate supported over activated vermiculite (AAVrm-Cu2) showed good catalytic activity in the synthesis of 3,4-dihydropyrimidinones. The catalyst can be separated easily from the reaction mixture by filtration and retains its catalytic activity for up to five cycles of reaction with no apparent decrease in yield.
机译:研究支持酸活性蛭石铜含铜络合物的合成,以制备用于Biginelli反应的有效,温和,鲁棒和可回收的催化剂。通过X射线荧光(XRF),红外光谱学(FTIR),热重分析(TGA),X射线粉末衍射(XRD),以及扫描电子显微镜(SEM),以及耦合能量分散X射线光谱的新催化剂(EDS)。在活性蛭石(AAVRM-CU2)上负载的铜柠檬酸铜在合成3,4-二氢嘧啶烷酮中显示出良好的催化活性。催化剂可以通过过滤容易地从反应混合物中分离,并保留其最多五个反应循环的催化活性,并且不明显降低产率。

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