Day: October 14, 2022

In 2019,Journal of Chemical Thermodynamics included an article by Bespyatov, M. A.. Recommanded Product: 13395-16-9. The article was titled 《Redetermination of low-temperature heat capacity of Cu(C5H7O2)2》. The information in the text is summarized as follows:

The heat capacity of copper bis-acetylacetonate (Cu(C5H7O2)2) was measured over the temperature range (6.54-313.16) K by adiabatic-shield calorimetry. No anomalies associated with phase transition were found in the functional heat capacity behavior. The Debye temperature at 0 K was calculated The data obtained were used to calculate its thermodn. functions (entropy, enthalpy, reduced Gibbs energy) in the range (0-313) K. They have the following values at 298.15 K: Cp° = (283.9 ± 0.5) J K-1 mol-1, Δ298.150Sm° = (359.1 ± 0.8) J K-1 mol-1, Δ298.150Hm° = (50.94 ± 0.09) kJ mol-1, φm° = (188.3 ± 1.1) J K-1 mol-1. The value of the absolute entropy were used to calculate the entropy of formation of Cu(C5H7O2)2 (cr) at T = 298.15 K. The universal heat capacity behavior of metal acetylacetonates was demonstrated in a wide temperature range. In the experiment, the researchers used Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: 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.Recommanded Product: 13395-16-9

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

In 2019,Russian Journal of General Chemistry included an article by Makhaev, V. D.; Petrova, L. A.; Shulga, Yu. M.. Application of 13395-16-9. The article was titled 《Mechanically Activated Solid-Phase Reaction of Copper(I) Chloride with Sodium β-Diketonates: Formation of Metallic Copper Nanoparticles》. The information in the text is summarized as follows:

Solid-phase reaction of copper(I) chloride with sodium β-diketonates under mech. activation in a vibration ball mill involves disproportionation of CuCl with the formation of the corresponding copper(II) β-diketonate and highly reactive X-ray amorphous metallic copper nanoparticles. The effect of reaction conditions on the process and some properties of the activated mixtures have been studied. In the experiment, the researchers used Bis(acetylacetone)copper(cas: 13395-16-9Application of 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.Application of 13395-16-9

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

《Copper Isolated Sites on N-Doped Carbon Nanoframes for Efficient Oxygen Reduction》 was written by Huang, Cong; Zheng, Lirong; Feng, Wenshuai; Guo, Aimin; Gao, Xiaohui; Long, Zhen; Qiu, Xiaoqing. COA of Formula: C10H16CuO4 And the article was included in ACS Sustainable Chemistry & Engineering in 2020. The article conveys some information:

In recent years, metal isolated site catalysts with the high exposure and maximized availability of metal species provide a new route to boost the oxygen reduction performance. However, in the absence of clusters and nanoparticles, the synthesis of this catalyst with metal high-loading, especially for copper, is still a big challenge. In this work, a metal isolated site catalyst with high copper content (1.12 wt %), copper isolated sites anchored on N-doped carbon materials (donated as Cu ISs/NC-1000), was prepared by the pyrolysis of copper acetylacetone within the metal-organic framework (ZIF-8) at 1000°C. The successful preparation of products can be demonstrated by high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption spectra. With the merits of the atomically dispersed surface metal atoms and abundant ORR-favored copper active sites, the present Cu ISs/NC-1000 exhibits an excellent ORR electrochem. activity with a half-wave potential of 0.855 V (vs RHE) and a limiting c.d. of 5.2 mA cm-2 in the electrochem. tests, superior to the results from com. Pt/C and previously reported Cu-based materials. For the durability, the negligible activity decay after 10,000 continuous potential cycles and good resistance to methanol crossover can be noted. The outstanding catalytic activity from the present Cu ISs/NC-1000 demonstrates the superiority of metal isolated sites as electrocatalytic centers. The excellent ORR activity of Cu ISs/NC catalysts in this work promotes the development of clean and sustainable energy devices. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9COA of Formula: C10H16CuO4)

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. COA of Formula: C10H16CuO4

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

Guo, Xueyi; Liu, Sheng; Wang, Weijia; Zhu, Congtan; Li, Chongyao; Yang, Ying; Tian, Qinghua; Liu, Yong published their research in Journal of Colloid and Interface Science in 2021. The article was titled 《Enhanced photocatalytic hydrogen production activity of Janus Cu1.94S-ZnS spherical nanoheterostructures》.HPLC of Formula: 13395-16-9 The article contains the following contents:

Photocatalytic hydrogen evolution is one of the most promising approaches for efficient solar energy conversion. The light-harvesting ability and interfacial structure of heterostructured catalysts regulate the processes of photon injection and transfer, which further determines their photocatalytic performances. Here, we report a Janus Cu1.94S-ZnS nano-heterostructured photocatalyst synthesized using a facile stoichiometrically limited cation exchange reaction. Djurleite Cu1.94S and wurtzite ZnS share the anion skeleton, and the lattice mismatch between immiscible domains is ∼1.7%. Attributing to the high-quality interfacial structure, Janus Cu1.94S-ZnS nanoheterostructures (NHs) show an enhanced photocatalytic hydrogen evolution rate of up to 0.918 mmol h-1 g-1 under full-spectrum irradiation, which is ∼38-fold and 17-fold more than those of sole Cu1.94S and ZnS nanocrystals (NCs), resp. The results indicate that cation exchange reaction is an efficient approach to construct well-ordered interfaces in hybrid photocatalysts, and it also demonstrates that reducing lattice mismatch and interfacial defects in hybrid photocatalysts is essential for enhancing their solar energy conversion performance. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9HPLC of Formula: 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. HPLC of Formula: 13395-16-9

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

Category: copper-catalystIn 2022 ,《Polymer Grafted Nanoparticle Composites with Enhanced Thermal and Mechanical Properties》 appeared in ACS Applied Materials & Interfaces. The author of the article were Kubiak, Joshua M.; Li, Buxuan; Suazo, Mathew; Macfarlane, Robert J.. The article conveys some information:

The distribution of filler particles within a polymer matrix nanocomposite has a profound influence on the properties and processability of the material. While filler aggregation and percolation can significantly enhance particular functionalities such as thermal and elec. conductivity, the formation of larger filler clusters and networks can also impair mech. properties like strength and toughness and can also increase the difficulty of processing. Here, a strategy is presented for the preparation of functional composites that enhance thermal conductivity over polymer alone, without neg. affecting mech. performance or processability. Thermal crosslinking of self-suspended polymer grafted nanoparticles is used to prepare highly filled (>50 volume %) macroscopic nanocomposites with homogeneously dispersed, non-percolating alumina particles in an organic matrix. The initial composites use low glass transition temperature polymer grafts and thus are flexible and easily shaped by thermoforming methods. However, after thermal aging, the resulting materials display high stiffness (>10 GPa) and enhanced thermal conductivity (>100% increase) and also possess mech. strength similar to commodity plastics. Moreover, the covalent bonding between matrix and filler allows for the significant elevation of thermal conductivity despite the extensive interfacial area in the nanocomposite. The thermal aging of polymer grafted nanoparticles is therefore a promising method for producing easily processable, mech. sturdy, and macroscopic nanocomposites with improved thermal conductivity The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Category: copper-catalyst)

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Category: copper-catalyst

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

《Lead-free two-dimensional (R-NH3)2MX4 inorganic-organic hybrids: solid-solid phase transitions and broadband emission》 was published in Journal of Physics D: Applied Physics in 2020. These research results belong to Bochalya, Madhu; Kumar, Sunil. Application In Synthesis of Cupric bromide The article mentions the following:

Among the large family of two-dimensional inorganic-organic hybrid material systems, the lead-free ones are significantly important due to their nontoxicity and suitability in energy storage devices, heat management in electronics, optoelectronics, light-emitting and memory devices, low-temperature magnetic refrigeration, and other applications. Thermal stability, solid-solid phase transitions and light emission properties of solution-processed copper- and manganese-based (R-NH3)2MX4 hybrids are reported here. Manganese chloride and long carbon chain-based systems are found to be highly stable as compared to the others. Thermally stable up to temperatures beyond 240 °C, these systems are seen to exhibit multiple solid-solid phase transitions in the temperature range of 30 °C-100 °C. The nature of the phase transitions depends on the length and the conformation of the organic chain, and the metal-halogen network present in them. Owing to the phase-change temperatures being near the room temperature as well as the high-value enthalpy and entropy changes, (C12H25NH3)2MnCl4 is more appropriate for energy storage and release applications. Also, these systems exhibit broadband light emission under ambient conditions to provide a low-cost route to white light-emitting devices. The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide)

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Application In Synthesis of Cupric bromide

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