Copper Nanoparticles from Copper Aluminum Hydrotalcite: An Efficient Catalyst for Acceptor‐ and Oxidant‐Free Dehydrogenation of Amines and Alcohols

An efficient and simple process for the preparation of stable nanocopper(0) on alumina [Cu(0)/Al 2 O 3 ] from the inorganic composite precursor copper aluminum hydrotalcite (Cu‐Al HT) by a chemical reduction method is described. Cu(0)/Al 2 O 3 was employed as an efficient catalyst in the acceptor‐ and oxidant‐free dehydrogenation of various amines and alcohols to their corresponding dehydrogenated products in good to excellent yields. The stability of Cu(0)/Al 2 O 3 was assessed by studying its recoverability and reusability in the dehydrogenation of amines and alcohols for up to five cycles. magnified image