13395-16-9 | Page 10 of 60 | copper related catalyst

Shi, Yan’s team published research in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020 | CAS: 13395-16-9

Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. Reference of Bis(acetylacetone)copper

《Hollow PtCu nanorings with high performance for the methanol oxidation reaction and their enhanced durability by using trace Ir》 was written by Shi, Yan; Fang, Yan; Zhang, Genlei; Wang, Xianshun; Cui, Peng; Wang, Qi; Wang, Yuxin. Reference of Bis(acetylacetone)copper And the article was included in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. The article conveys some information:

Platinum-copper (PtCu) alloy nanostructures represent an emerging class of electrocatalysts for the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs), but practical applications have been limited by catalytic activity and durability. In this study, an efficient one-pot hydrothermal strategy is developed to prepare unique PtCu alloy nanorings (NRs) with a highly open hollow structure. The formation process of the hollow NR structure includes the initial formation of pure solid Cu nanocrystals (NCs), the subsequent galvanic replacement reaction between Cu and Pt2+, and the co-deposition of Pt and Cu atoms at the edges. The r-Pt0.75Cu/C catalyst, i.e., Pt0.75Cu NRs with an input Pt/Cu molar ratio of 0.75/1 supported on carbon black exhibited superior MOR performance, with a mass activity of 2.175 A mgPt-1 and a specific activity of 52.26 A m-2, which are 4.5- and 6.6-fold enhancements relative to those of com. PtRu/C-JM, resp. Impressively, the durability of Pt0.75Cu NRs for the MOR can be enhanced dramatically by doping with trace Ir. The mass activity loss of r-Pt0.75Ir0.05Cu/C, i.e., Ir-doped Pt0.75Cu NRs supported on carbon black, was only 7.44%, much smaller than those of r-Pt0.75Cu/C (37.76%) and PtRu/C-JM (50.27%) after 10 000 CV cycles. This work provides a strategic design of efficient PtCu catalysts for the MOR. The experimental process involved the reaction of Bis(acetylacetone)copper(cas: 13395-16-9Reference of Bis(acetylacetone)copper)

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Lo, Kong Mun’s team published research in Zeitschrift fuer Kristallographie – New Crystal Structures in 2020 | CAS: 13395-16-9

《Crystal structure of bis(acetylacetonato-κ2O,O′)-(ethanolamine-κ2N,O)copper(II), C14H25CuNO5》 was published in Zeitschrift fuer Kristallographie – New Crystal Structures in 2020. These research results belong to Lo, Kong Mun; Lee, See Mun; Tiekink, Edward R. T.. Safety of Bis(acetylacetone)copper The article mentions the following:

C14H25CuNO5, triclinic, P1[n.772] (number 2), a = 7.7319(3) Å, b = 9.9198(5) Å, c = 11.6827(5) Å, α = 81.866(4)°, β = 75.576(4)°, γ = 74.562(4)°, V = 833.78(7) Å3, Z = 2, Rgt(F) = 0.0287, wRref(F2) = 0.0807, T = 100(2) K. In the experimental materials used by the author, we found Bis(acetylacetone)copper(cas: 13395-16-9Safety of Bis(acetylacetone)copper)

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Jana, Rajkumar’s team published research in Chemical Communications (Cambridge, United Kingdom) in 2021 | CAS: 13395-16-9

Jana, Rajkumar; Datta, Ayan; Malik, Sudip published an article in 2021. The article was titled 《Tuning intermediate adsorption in structurally ordered substituted PdCu3 intermetallic nanoparticles for enhanced ethanol oxidation reaction》, and you may find the article in Chemical Communications (Cambridge, United Kingdom).Category: copper-catalyst The information in the text is summarized as follows:

Co and Ni-substituted structurally ordered intermetallic PdCu3 nanoparticles (NPs) synthesized at low temperature exhibit remarkable enhancement of the ethanol electrooxidation (EOR) activity with improved durability. The first-principle calculations suggest that prompted generation of OH and CH3CO radicals in close proximity and shifting of the d-band center towards the Fermi level boost the EOR efficiency. The experimental part of the paper was very detailed, including the reaction process of Bis(acetylacetone)copper(cas: 13395-16-9Category: copper-catalyst)

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Bootharaju, Megalamane S.’s team published research in Angewandte Chemie, International Edition in 2021 | CAS: 13395-16-9

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.Category: copper-catalyst

Bootharaju, Megalamane S.; Lee, Sanghwa; Deng, Guocheng; Malola, Sami; Baek, Woonhyuk; Haekkinen, Hannu; Zheng, Nanfeng; Hyeon, Taeghwan published their research in Angewandte Chemie, International Edition in 2021. The article was titled 《Ag44(EBT)26(TPP)4 Nanoclusters With Tailored Molecular and Electronic Structure》.Category: copper-catalyst The article contains the following contents:

Although atomically precise metalloid nanoclusters (NCs) of identical size with distinctly different mol. structures are highly desirable to understand the structural effects on the optical and photophys. properties, their synthesis remains highly challenging. Herein, we employed phosphine and thiol capping ligands featuring appropriate steric effects and synthesized a charge-neutral Ag NC with the formula Ag44(EBT)26(TPP)4 (EBT: 2-ethylbenzenethiolate; TPP: triphenylphosphine). The single-crystal X-ray structure reveals that this NC has a hollow metal core of Ag12@Ag20 and a metal-ligand shell of Ag12(EBT)26(TPP)4. The presence of mixed ligands and long V-shaped metal-ligand motifs on this NC has resulted in an enhancement of the NIR-II photoluminescence quantum yield by >25-fold compared to an all-thiolate-stabilized anionic [Ag44(SR)30]4- NC (SR: thiolate). Time-dependent d.-functional calculations show that our Ag44 NC is an 18-electron superatom with a modulated electronic structure as compared to the [Ag44(SR)30]4- anion, significantly influencing its optical properties. After reading the article, we found that the author used Bis(acetylacetone)copper(cas: 13395-16-9Category: copper-catalyst)

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Zhang, Yifan’s team published research in Chemical Engineering Journal (Amsterdam, Netherlands) in 2019 | CAS: 13395-16-9

The author of 《Stabilization of dispersed CuPd bimetallic alloy nanoparticles on ZIF-8 for photoreduction of Cr(VI) in aqueous solution》 were Zhang, Yifan; Park, Soo-Jin. And the article was published in Chemical Engineering Journal (Amsterdam, Netherlands) in 2019. COA of Formula: C10H16CuO4 The author mentioned the following in the article:

Nowadays, the Chromium (Cr(VI)) pollution is regarded as a serious threat to both the human health and environment. Therefore, developing an efficient catalyst to remove this pollution is an urgent task. As we know, photocatalytic degradation performance of Cr(VI) is severely hampered owing to its highly recombination efficiency of electrons and holes and lower adsorption activity. In this paper, bimetallic alloy nanoparticles decorated on ZIF-8 were synthesized using a sol-gel method for the photoreduction of Cr(VI) in aqueous solution The CuPd@ZIF-8 catalyst was characterized in terms of sp. surface area, surface morphol., and optical response using X-ray diffraction (XRD) spectrum, Raman spectrum, transmission electron microscopy (TEM), SEM (SEM), XPS, sp. surface area and UV-vis diffuse reflectance (DRS) spectrum. The as-obtained CuPd@ZIF-8 catalyst exhibited excellent photoreduction activity for the reduction of Cr (VI), compared to that of pristine ZIF-8 nanoparticles. Furthermore, the CuPd@ZIF-8 catalyst containing 5 wt% CuPd bimetallic nanoparticles showed the highest photocatalytic activity, where 89% reduction of Cr(VI) (20 ppm) reduction was achieved within 60 min. The as prepared CuPd@ZIF-8 catalyst provided a high sp. surface area and charge transfer rate, which impeded the recombination of the generated electrons and holes. Moreover, the stability of the CuPd@ZIF-8 catalyst was tested and photocatalytic activity was maintained at 90% after four cycles. In addition, the proposed mechanism is explained thoroughly.Bis(acetylacetone)copper(cas: 13395-16-9COA of Formula: C10H16CuO4) was used in this study.

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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The hexagonal copper-tin alloy (Cu-Sn) nanoplates were synthesized using a high temperature solvent method, the length of six equilateral edges of hexagonal Cu-Sn nanoplates was 23 nm, and the thickness was 13 nm. The obtained hexagonal Cu-Sn nanoplates were highly monodisperse and allowed the formation of nanoarrays arranged with long-range order. The hexagonal Cu-Sn nanoplates exhibited high catalytic activity on catalytic hydrogenation of 4-nitrophenol to 4-aminophenol. Due to the promotion effect of Sn, the apparent rate constant (ka) of hexagonal Cu-Sn nanoplates was three times that of Cu nanoparticles. The density functional theory (DFT) calculations and experimental results demonstrated that Sn could promote the coordination process of -NO2 of 4-nitrophenol with Cu-Sn nanoplates and contribute to activation of 4-nitrophenol. In addition, the hexagonal Cu-Sn nanoplates showed high stability and reusability for the reduction reaction, good adaptability in different pH and the ionic strength, and wide applicability for the degradation of methylene blue, methyl orange, and rhodamine B, even in the industrial wastewater, suggesting that the Cu-Sn nanoplates are promising catalysts in organic industry wastewater treatment.

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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A treatment of the ligands, 3?(2?methylbutyl)?5?pyridylmethylene-substituted 2?thio?3,5?dihydro?4??imidazole?4?one (L) with CuCl2·2H2O in MeOH/CH2Cl2 or Cu(acac)2 in MeOH/CH2Cl2 affords to binuclear complexes with the [L-H]2Cu+1.5Cu+1.5Cl or [L-H]2CuICuI composition, respectively. X-ray crystallography demonstrated close Cu-Cu interaction for the first complex and the absence of Cu?Cu bonding for the second one.

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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The rate and activation parameters of tetraphenyltetrabenzoporphine (H 2TPTBP) complexation with 3d-metal acetates and acetylacetonates are shown to be determined by the solvent nature. With an increase in the electron-donor properties of a solvent, the reaction rate increases due to protonation of N-H bonds and decreases as MAm(Solv)n – m salt solvates become more stable. As the result, the rate of a reaction with ZnAc2 increases in the series: DMF < DMSO < Py < PrOH-1 < CH3CN < C6H6. In inert and weakly coordinating solvents, the transition state of a reaction is supposed to be formed according to the mechanism of contraction of the salt coordination sphere. The rate of H2TPTBP reaction with metal acetates in pyridine changes in the series: Cu(II) > Cd(II) > Zn(II) > Co(II), while the stability of the obtained complexes decreases in the series Cu(II) > Co(II) > Zn(II) > Cd(II). It is shown that the spectral criterion of the complex stability can be used in the series of metal complexes with one ligand, but it is violated if the ligand structure is changed.

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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A reaction of acetylacetone with the framework sandwich-type metallosiloxanes (MOS) of general formula [PhSiO2]6M 6[PhSiO2]6, where M = Cu, Ni, Mn, was studied by GPC, 1H and 29Si NMR spectroscopy, X-ray diffraction, elemental and functional analysis. The reaction involved replacement of the metal atoms with the hydrogen atoms and is accompanied by the formation of the corresponding chelate complexes M(acac)2. Displacement of the metal from the framework MOS leads to the destruction of molecular skeleton and formation of phenylsiloxanes containing Si-OH groups. The yield and composition of the reaction products considerably depend on the nature of the metal in [PhSiO2]6M6[ThSiO2]6. A selective substitution of the metal leads to the stereoregular hexahydroxyhexaphenylcyclohexasiloxane, [PhSiO(PH)]6, cis-isomer. The structure and composition of the crystalline hexahydroxyhexaphenylcyclohexasiloxane obtained were confirmed by 29Si NMR spectroscopy, X-ray diffraction study, and functional analysis, while its TMS derivative was studied with 1H NMR spectroscopy and GPC. Using a framework manganese phenylsiloxane as an example, a reversible character of the process has been established and an alternative synthesis of this compound from hexahydroxyhexaphenylcyclohexasiloxane and Mn(acac)2 has been accomplished for the first time.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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The oxidation of white phosphorus by hydrogen peroxide or different organic peroxides (such as tert-butyl hydroperoxide, dibenzoylperoxide, 3-chloroperoxybenzoic acid) has been studied in both aqueous and alcoholic solutions under anaerobic conditions. Depending on the reaction conditions, P(I) (hypophosphorous acid), P(III) [phosphorous acid, mono- and dialkyl (or diaryl) hydrogen phosphonates] and P(V) [phosphoric acid or trialkyl (or triaryl) phosphates] derivatives are produced. The catalytic oxidative P-O coupling of P4 to water, aliphatic alcohols and phenol under mild reaction conditions is accomplished by using copper(I), copper(II) and vanadium(IV) complexes. Catalytic conversion of white phosphorus with complete efficiency and high selectivity for monoalkyl hydrogen phosphonates (>95%) may be achieved using 3-ClC6H4C(O)OOH as oxidant under optimized conditions. An identical radical mechanism is suggested to account for both the stoichiometric and the catalytic oxidative hydroxydation, alkoxydation and phenoxydation of white phosphorus promoted by peroxides in both aqueous biphasic conditions and organic solutions.

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”