Synergistic effect of the Pd–Ni bimetal/carbon nanofiber composite catalyst in Suzuki coupling reaction

Abstract

A novel Pd1Ni4 bimetal nanocomposite catalyst was prepared and showed better performance than their monometallic counterpart. What's more, the catalyst could be reused ten times without significant change in catalytic activity, which met the request of sustainable chemistry.

Atomic layer deposition of Pd nanoparticles on self-supported carbon-Ni/NiO-Pd nanofiber electrodes for electrochemical hydrogen and oxygen evolution reactions

“…This indicates that a graphite layer structure is gradually created with the increase of the Ni content in Ni acetate-PAN nanofibers at a specific weight ratio of Ni acetate (20%). Furthermore, the existing nickel acetate accelerated PAN thermal transformation into graphite carbon, with a very low concentration of structural defects [78]. However, the R value of C-50Ni-Pd increased to 0.66, suggesting damage of the planar structure at higher PAN to Ni acetate weight ratios.…”

Catalytically active nanosized Pd9Te4(telluropalladinite) and PdTe (kotulskite) alloys: first precursor-architecture controlled synthesis using palladium complexes of organotellurium compounds as single source precursors

“…The number of catalytic systems in general and nanocatalytic systems in particular, which are competent to catalyze the coupling of aryl chlorides, is not very high. [51][52][53][54][55][56][57][58][59][60][61][62][63] In fact, aryl chlorides are the least reactive substrates, and most of the catalytic systems either show inactivity for these substrates or show very low efficiency. Many of the reported palladium based nanocatalytic systems require longer reaction times (Table 4, (Table 4, entry 1-4, 15).…”

“…Many of the reported palladium based nanocatalytic systems require longer reaction times (Table 4, (Table 4, entry 1-4, 15). [52][53][54][55]63 Reports about the use of nanosized alloys of palladium as catalysts of Suzuki coupling are rare, but not non-existent in the literature. Such alloys include Pd 1 Ni 4 , CuPd, Y 3 Pd 2 , Pd 3 Te 2 and Pd 17 Se 15 .…”

“…43,48,52,57,64 The alloy Pd 1 Ni 4 has been graed on carbon nanobers and the resulting system (Pd 1 Ni 4 /CNF) gives only 7% conversion in the reaction of phenylboronic acid and chlorobenzaldehyde aer 5 hours at 80 C using 5 mg of the catalyst (Table 4, entry 1). 52 Its performance is insignicant in comparison to that of palladium telluride alloys in the present study. Pd 3 Te 2 is one of those rarest of the rare palladium telluride alloys which have been used to catalyse Suzuki coupling.…”

Phosphotungstic acid impregnated niobium coated superparamagnetic iron oxide nanoparticles as recyclable catalyst for selective isomerization of terpenes

“…Niobium-based materials incorporated in zeolites and mesoporous molecular sieves have been used to enhance several organic reactions. [37][38][39] Accordingly, the binding of niobium oxide (Nb 2 O 5 ) on the surface of superparamagnetic iron oxide nanoparticles (SPIONs) can generate new junctions and sites with enhanced catalytic activity upon synergic interactions between both metal oxides. 40 In fact, sites coupling Lewis and Bronsted acidity with redox properties can be generated thus offering new mechanistic pathways for different reactions, but especially for aand b-pinene isomerization reactions.…”