A New Straightforward and Mild Preparation of Nickel(0) Nanoparticles

Abstract

Very fine nickel nanoparticles with diameters of 2.5 ± 1.5 nm have been prepared by reduction of anhydrous nickel(II) chloride with lithium powder and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB) in THF at room temperature.

Bio-based and environmental input for transfer hydrogenation using EcoNi(0) catalyst in isopropanol

“…Among these oxides, nickel was present as NiO, so that a reduction to Ni(0) was required. Production of Ni(0) nanoparticles used as catalyst for H-transfer hydrogenation has been previously performed by reduction of Ni(II) salts with several reducing agents, such as metal lithium [31][32][33][34][35], hydrazine [36][37][38][39][40], NaBH 4 [41][42][43], ethylene glycol [44][45][46], oleylamine/trioctylphosphine [47] or by thermal decomposition of nickel isopropoxide, prepared with an excess of Li, Na or K metal [48]. In spite of their efficiency, these reducing agents are toxic or hazardous to manipulate.…”

Preparation and Catalysis of Supported NiO Nanocluster for Oxidative Coupling of Thiophenol

“…The practical benefit of this synthesis is controllability of the size. Synthesis of monodispersed nanoclusters of Pd [14][15][16], Pt [17,18], Rh [19,20], Au [21,22] and Ni [23,24] has been reported.…”

Homocoupling of aryl iodides promoted by nickel(0) nanoparticles

“…6 The high reactivity of these nanoparticles was demonstrated in the catalytic hydrogenation and reduction of a variety of organic compounds, including carbon-carbon multiple-bond-containing compounds. In particular, the two latter systems have found application in the highly selective conjugate reduction of α,β-unsaturated carbonyl compounds 10 as well as in the stereoselective cis semihydrogenation of internal alkynes and the semihydrogenation of terminal alkynes under mild reaction conditions.…”