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Monodispersed and Stable Nano Copper(0) from Copper‐ Aluminium Hydrotalcite: Importance in CC Couplings of Deactivated Aryl Chlorides

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A simple one‐step approach for the 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 XPS, XANES, XRD and TEM analysis. Cu(0)/Al2O3 nano composites were used as an efficient catalyst in the CC coupling of deactivated aryl chlorides. The high efficiency and reusability exhibited by Cu(0)/Al2O3 outline its potential as an alternative over traditional noble metal‐based catalysts in CC coupling reactions.

Document Type: Research Article


Affiliations: 1: Inorganic and Physical Chemistry Division, CSIR – Indian Institute of Chemical Technology, Hyderabad – 500076, India, phone: (+91)-40-2719-3510, Fax: (+91)-40-2716-0921 2: Center for Nuclear Magnetic Resonance Division, CSIR – Indian Institute of Chemical Technology, Hyderabad – 500076, India

Publication date: March 11, 2013


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