New Complex of Copper on Boehmite Nanoparticles as Highly Efficient and Reusable Nanocatalyst for Synthesis of Sulfides and Ethers

Abstract

Boehmite is a cubic orthorhombic structure of aluminum oxide hydroxide, which prepared via addition of sodium hydroxide solution to an aluminum nitrate solution at room temperature. In this work, the surface of boehmite nanoparticles (BNPs) modified by 3‐choloropropyltrimtoxysilane (3‐CPTMS), then reacted with N,N,N′,N′‐tetraethyldiethylentriamine (TEDETA). Eventually, CuI immobilized on modified boehmite (CuI‐TEDETA@BNPs). Structure of this catalyst was characterized using FT‐IR, TEM, SEM, EDS, TGA, and AAS techniques. Finally, the catalytic activity of CuI‐TEDETA@BNPs was studied for the synthesis of ethers and sulfides. All ethers and sulfides were obtained in high yields, which reveals the high activity of described catalyst. This catalyst was reused for several times without significant loss of its catalytic efficiency. Recovered catalyst was characterized by SEM and FT‐IR techniques, which shown a good agreement with fresh catalyst. Also, heterogeneity and stability of CuI‐TEDETA@BNPs confirmed by hot filtration test.

Magnetization of graphene oxide nanosheets using nickel magnetic nanoparticles as a novel support for the fabrication of copper as a practical, selective, and reusable nanocatalyst in C–C and C–O coupling reactions

“…The cyclic mechanism includes the oxidative addition, transmetallation, and reduction elimination steps, which lead to the formation of diaryl ethers from the coupling of aryl halides with phenol and the regeneration of the catalyst to continue the catalytic cycle. 59 …”

“…The cyclic mechanism includes the oxidative addition, transmetallation, and reduction elimination steps, which lead to the formation of diaryl ethers from the coupling of aryl halides with phenol and the regeneration of the catalyst to continue the catalytic cycle. 59 The natural heterogeneity of Cu-ninhydrin@GO-Ni MNPs was studied by the hot ltration test and AAS analysis. 60 Initially, the coupling reaction of 4-nitrobromobenzene with PhB(OH) 2 in the presence of this catalyst was performed under the optimized conditions.…”

Pd on cyclotriphosphazen-hexa imine decorated boehmite as an efficient catalyst for hydrogenation of nitro arenes under mild reaction condition

“…Using these modifications, the textural properties, as well as the surface chemistry of natural compounds can be tuned. One of the natural compounds that showed promising results for the catalytic applications is boehmite (γ-AlOOH) 10 that is a non-toxic and thermally and chemically stable compound and can be found in nature in large quantity 10 , 11 . Boehmite that possesses multiple –OH groups on its surface can also be chemically modified by introduction of various chemical functionalities via covalent or non-covalent approaches 12 .…”

Heteroployacid on the composite of boehmite and polyionic liquid as a catalyst for alcohol oxidation and tandem alcohol oxidation Knoevenagel condensation reactions

“…In this regard, boehmite is considered as an interesting candidate for heterogenizing various catalytic species 16 . Boehmite (γ-AlOOH) nanoparticles benefit from various advantageous, including stable structure, non-toxicity, high specific surface area, and availability 17 . In addition, the presence of hydroxyl groups on boehmite surface provides an opportunity to surface functionalization and tuning the properties of boehmite 18 .…”