Monodispersed and Stable Nano Copper(0) from Copper- Aluminium Hydrotalcite: Importance in CC Couplings of Deactivated Aryl Chlorides
作者:Racha Arundhathi、Dandu Damodara、Kakita Veera Mohan、Mannepalli Lakshmi Kantam、Pravin R. Likhar
DOI:10.1002/adsc.201201007
日期:2013.3.11
preparation of highly monodispersed nano copper(0) stabilized on alumina [Cu(0)/Al2O3] by thermal reduction of copper‐aluminium hydrotalcite (Cu‐Al HT) under a hydrogen atmosphere is described. The transformation of Cu‐Al HT to Cu(0)/Al2O3 occurrs via dehydroxylation of divalent and trivalent metal hydroxides and decarboxylation of carbonate anions present in the interlayers of hydrotalcite, as confirmed by
通过在氢气氛下对铝铝水滑石(Cu-Al HT)进行热还原来制备稳定在氧化铝[Cu(0)/ Al 2 O 3 ]上的高单分散纳米铜(0)的简单一步方法是描述。铜铝HT与Cu(0)/ Al的改造2 ö 3个occurrs经由二价和三价金属氢氧化物和碳酸根阴离子的脱羧的脱羟基存在于水滑石中的中间层,通过XPS,XANES,XRD和TEM分析证实。Cu(0)/ Al 2 O 3纳米复合材料被用作C中的有效催化剂失活的芳基氯的C偶联。Cu(0)/ Al 2 O 3表现出的高效率和可重复使用性概述了其在CC偶联反应中作为传统贵金属基催化剂的替代品的潜力。