Category: 16606-55-6

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3. In an article, author is Emami-Nori, Alahyar,once mentioned of 16606-55-6, Safety of (R)-4-Methyl-1,3-dioxolan-2-one.

Efficient Synthesis of Multiply Substituted Triazines Using GO@N-Ligand-Cu Nano-Composite as a Novel Catalyst

GO@N-Ligand-Cu nano-composites were found to function as an efficient catalyst for the synthesis of triazines from benzhydrazides, ammonium acetate, and benzyl derivatives. Graphene-oxide is improved with N,N-‘-bis(pyridin-2-ylmethyl)benzene-1,2-diamine and after that is matched with copper (Cu). This procedure avoids the use of precious metals and the heterogeneous nature of the GO, on the other hand, the catalyst is easily removed from the product through simple filtration. [GRAPHICS] .

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

 

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 16606-55-6, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3. In an article, author is Kanwal, Aisha,once mentioned of 16606-55-6.

Cascade electron transfer in ternary CuO/alpha-Fe2O3/gamma-Al2O3 nanocomposite as an effective visible photocatalyst

Highly efficient ternary heterojunction of CuO/alpha-Fe2O3/gamma-Al2O3 was effectively fabricated by a facile and cost effective chemical route. The structural, chemical composition, morphology, optical and photocatalytic properties of as-prepared CuO/alpha-Fe2O3/gamma-Al2O3 photo catalyst were compared to pristine and binary samples by various characterization. Existence of all the dominant peaks of CuO, alpha-Fe2O3 and gamma-Al2O3 are noticeable in XRD spectrum of CuO/alpha-Fe2O3/gamma-Al2O3 ternary photo catalyst which confirms the successful formation of the photocatalyst. SEM and HRTEM results revealed the spherical shape CuO nanoparticles with distorted alpha-Fe2O3 agglomerated plates which led to complete diffusion with gamma-Al2O3. The band gap of ternary nanocomposite was found to be 1.9 eV elucidated by UV-DRS. Brunauer-Emmett-Teller (BET) analysis showed that as-fabricated ternary CuO/alpha-Fe2O3/gamma-Al(2)O(3 )nanocomposite exhibited the porous structure with large surface area and small pore volume as compared to pristine gamma-Al2O3.due to the unique ternary nanocomposite structure and synergistic effect among various components. The photocatalytic activity was examined by monitoring the deterioration of methyl orange under simulated solar light irradiation. CuO/alpha-Fe2O3/gamma-Al2O3 exhibited superior photocatalytic efficacy as compared to CuO/gamma-Al(2)O(3 )and alpha-Fe2O3/gamma-Al2O3 binary and pure oxides of gamma-Al2O3, CuO and alpha-Fe2O3. The marvelous photocatalytic activity of CuO/alpha-Fe2O3/gamma-Al2O3 ternary nanocomposite samples can be ascribed to their close contact, strong interfacial hybridization and proficient charge transfer capacity. The electrochemical studies such as linear sweep voltammetry (LSV) and cyclic voltammetry (CV) were carried out to explore the charge transfer behavior and support the high photo activity of ternary nanocomposite CuO/alpha-Fe2O3/gamma-Al2O3. LSV measurements manifested that CuO/alpha-Fe2O3/gamma-Al2O3 exhibited 4.3 folds higher current density than bare gamma-Al2O3 which confirmed the faster electron transfer from CuO to gamma-Al2O3 via mediated alpha-Fe2O3 through the interfacial potential gradient in conduction band. Cyclic voltammetry (CV) results showed that pair of anodic and cathodic peaks in CuO/alpha-Fe2O3/gamma-Al2O3 appeared which affirm the efficient increase in photoinduced e(-)/h(+) separation and suppress recombination rate of electron-hole pair. This work demonstrated that CuO/alpha-Fe2O3/gamma-Al2O3 ternary nanocomposite is found to be a promising candidate as an efficient adsorbent for organic dye removal from waste water.

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

 

Related Products of 16606-55-6, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, SMILES is O=C1OC[C@@H](C)O1, belongs to copper-catalyst compound. In a article, author is Zang, Dejin, introduce new discover of the category.

Interface engineering of Mo-8/Cu heterostructures toward highly selective electrochemical reduction of carbon dioxide into acetate

Electrocatalytic CO2 reduction reaction (CO2RR) is a promising pathway for storage of renewable electricity and converting CO2 into value-added products. It’s highly desired to obtain acetic acid via CO2RR since it’s an important chemical feedstock and high energy-density liquid fuel. However, developing highly efficient elec-trocatalysts for selective CO2RR toward acetate remains formidable challenge. We report an interface engineering strategy to modify copper nanocubes with polyoxometalate (POM) to generate Cu-O-Mo interface as active sites for CO2RR, achieving state-of-the-art activity with 48.68% acetate formation Faradaic efficiency and current density of similar to 110 mA cm(-2) at-1.13 V vs RHE. DFT calculations suggest the interface of Cu planes and polyoxometalate clusters with abundant Cu-O-Mo active sites promote the generation of *CH3 and successive coupling with CO2 insertion, showing a potential dependence of acetate production. This work provides a Cu-O-Mo interface model for the rational design of earth-abundant metal based electrocatalysts for CO2RR and other renewable energy conversions.

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

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, formurla is C4H6O3. In a document, author is Striegler, Susanne, introducing its new discovery. Product Details of 16606-55-6.

Microgel-Catalyzed Hydrolysis of Nonactivated Disaccharides

The controlled and selective hydrolysis of underivatized disaccharides and oligosaccharides remains a challenge that is met by enzymatic and nonenzymatic approaches. In an effort to capitalize on recent progress in the development of functional enzyme mimics for the hydrolysis of glycosidic bonds, we developed cross-linked microgels with embedded binuclear copper(II) complexes that are shown here to hydrolyze 1.4 over 1.6 glycosidic bonds under mildly alkaline conditions at elevated temperatures. The microgel catalysts show an unusual preference for the hydrolysis of 1 -> 4 beta- over 1 -> 4 alpha-glycosidic bonds yielding up to 25 mu g L-1 of glucose from cellobiose over 72 h and about half of that during the hydrolysis of maltose after correction for background effects. The experimental results are supported by computational analyses of the interactions between the embedded catalyst and the nonactivated disaccharide in putative transition state structures of the assembly during hydrolysis of the nonactivated glycosidic bond to rationalize this observation.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 16606-55-6 help many people in the next few years. Product Details of 16606-55-6.

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

 

Related Products of 16606-55-6, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, SMILES is O=C1OC[C@@H](C)O1, belongs to copper-catalyst compound. In a article, author is Lee, Jihyeon, introduce new discover of the category.

Cu2O(100) surface as an active site for catalytic furfural hydrogenation

In order to investigate the major active site of Cu-based catalysts in furfural (FAL) hydrogenation, theoretical calculations were combined with empirical analyses. The adsorption of FAL and H-2 on the Cu(111), CuO(100), and Cu2O(100) surfaces was compared based on density functional theory (DFT) calculations. The migration barrier of the dissociatively adsorbed H atoms on different surfaces was also calculated. It is demonstrated that the Cu2O(100) surface has the largest FAL adsorption energy of 1.63 eV and an appropriate Cu-Cu distance for adsorption and preferential dissociation of the H-2 molecule. To correlate the DFT results with catalytic ex-periments, mesoporous copper oxides (m-CuO) were prepared under controlled reduction conditions. The overall activity of the m-CuO catalysts is determined by the concentration of exposed Cu+. The combined results from DFT calculations and experiments show that Cu2O is a major active species promoting the high activity of FAL hydrogenation.

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

 

Reference of 16606-55-6, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, SMILES is O=C1OC[C@@H](C)O1, belongs to copper-catalyst compound. In a article, author is Ranjekar, Apoorva M., introduce new discover of the category.

Steam Reforming of Methanol for Hydrogen Production: A Critical Analysis of Catalysis, Processes, and Scope

The hydrogen economy is being pursued quite vigorously since hydrogen is an important and green energy source with a variety of applications as fuel for transportation, fuel cell, feedstock, energy vector, reforming in refineries, carbon dioxide valorization, biomass conversion, etc. Steam reforming of alcohols is a well-established technique to obtain syngas. Methanol is viewed to be a lucrative alternative for fossil fuels, due to its flexibility in being generated from multiple sources, high energy density, and low operating temperatures. The catalysts used for reforming govern the methanol conversion rate and the ratio of gaseous products, i.e., H-2, CO, and CO2. Group VIII-XII metals have been widely utilized for methanol steam reforming as they have a higher hydrogen yield. Several other catalysts and novel techniques have been developed and used to date. Quite a few strategies to enhance the performance of catalysts and reduce deactivation have been discussed. This review focuses on the metallic catalysts, mainly Cu, Pd, Zn, with different formulations and compositions for steam reforming of methanol (SRM). Active catalyst components, supports, and their interactions, along with different promoters, are reviewed, and their performances are critically analyzed. The various reaction mechanisms and reaction pathways have been identified and elaborated. A fundamental understanding of the functionality and structure of catalysts is required no matter which alcohol is used as a feedstock, and some general inferences can be obtained from polyhydroxyl feed for the steam reforming of methanol, which is the subject matter of this review. Particularly, the role of copper as a component in mono and multimetallic systems and the nature of support must be studied fundamentally to get high hydrogen yields. It is important to determine how metal support interactions, including oxygen transfer from reducible oxides to the metal site, influence the catalyst activity, selectivity, and stability. Further, the mechanism by which alloying affects the selectivity in multimetallic catalysts must be understood by using high-end characterizations.

Reference of 16606-55-6, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 16606-55-6 is helpful to your research.

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

 

16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3, Recommanded Product: 16606-55-6, belongs to copper-catalyst compound, is a common compound. In a patnet, author is Liu, Wei, once mentioned the new application about 16606-55-6.

Atomically-ordered active sites in NiMo intermetallic compound toward low-pressure hydrodeoxygenation of furfural

Activation of oxygen-containing functional groups plays a key role in sustainable biomass upgrading and conversion. In this work, a NiMo intermetallic compound (IMC) catalyst was prepared based on layered double hydroxides (LDHs) precursors, which displayed prominent catalytic performance for furfural hydrodeoxygenation (HDO) to 2-methylfuran (2-MF) (yield: 99 %) at a rather low hydrogen pressure (0.1 MPa), significantly superior to NiMo alloy, monometallic Ni and other Ni-based catalysts ever reported. CO-IR, STEM, EXAFS and XANES give direct evidences that the atomically-ordered Ni/Mo sites in NiMo IMC determine the uniform bridging-type adsorption mode of C = O bond in furfural whilst adsorption of furan ring is extremely suppressed. In situ FT-IR and DFT calculation further substantiate that ordered Ni-Mo bimetallic sites of IMC, in contrast to the random atomic sequence in NiMo alloy, facilitate the activation and cleavage of C-OH bond in the intermediate (furfuryl alcohol, FOL), accounting for the production of 2-MF. This work demonstrates the decisive effect of atomically-ordered active sites in IMC catalyst on activation of oxygen-containing functional groups and product selectivity, which can be extended to catalytic upgrading of biomass-derived platform molecules.

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

 

Let¡¯s face it, organic chemistry can seem difficult to learn, Category: copper-catalyst, Especially from a beginner¡¯s point of view. Like 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is copper-catalyst, belongs to copper-catalyst compound. In a document, author is Kaewbuddee, C., introducing its new discovery.

Structural characterizations of copper incorporated manganese oxide OMS-2 material and its efficiencies on toluene oxidation

This work aimed to study the excellent properties of the high-valent copper doped into the framework structure of K-OMS-2 catalyst (Cu-K-OMS-2). The physicochemical properties of Cu-K-OMS-2 material were examined by many techniques. The copper dopant can improve the physicochemical properties of the K-OMS-2 catalyst, including the specific surface area, O-ads/O-latt ratio, and Cu3+/Cu2+ ratio, resulting in enhanced catalytic activity. The specific surface area of Cu-K-OMS-2 was higher than K-OMS-2 material. The Mn3+/Mn4+ ratio of K-OMS-2 (0.10) was decreased, compared with the Cu-K-OMS-2 (0.08) catalyst. Moreover, the copper dopant can enhance the O-ads/O-latt ratio of Cu-K-OMS-2 to 0.62, which higher than K-OMS-2 (0.24). The Cu3+ species were observed in the Cu-K-OMS-2 structure. Besides, the oxidation state of copper on the Cu-K-OMS-2 surface revealed both Cu3+ and Cu2+ species, which affected toluene removal. The existence of the Cu3+/Cu2+ ratio led to enhance toluene removal at the low reaction temperature. Moreover, the Cu K-edge EXAFS spectrum demonstrated that the Cu ions existed in the same site as the Mn ions in the K-OMS-2 framework structure. Consequently, we can propose that Cu3+ existed in the Cu-K-OMS-2 framework structure, which influenced the high toluene oxidation at the low reaction temperature. The H-2-TPR results confirmed that the copper dopant could improve the reducibility and enhance oxygen mobility of K-OMS-2 material at the low reaction temperature. Also, the high-valent copper doped into the K-OMS-2 catalyst showed high stability for VOCs oxidation. The activation energy of toluene oxidation over the Cu-K-OMS-2 catalyst was about 91.18 kJ mol(-1).

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

 

Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3, belongs to copper-catalyst compound, is a common compound. In a patnet, author is Qian, Sijia, once mentioned the new application about 16606-55-6, Computed Properties of C4H6O3.

New insights on the enhanced non-hydroxyl radical contribution under copper promoted TiO2/GO for the photodegradation of tetracycline hydrochloride

TiO2/graphene oxide (GO) as photocatalyst in the photo -degradation of multitudinous pollutants has been extensively studied. But its low photocatalytic efficiency is attributed to the high band gap energy which lead to low light utilization. Cu-TiO2/GO was synthesized via the impregnation methods to enhance the catalytic performance. The Cu-TiO2/GO reaction rate constant for photo -degradation of pollutants (tetracycline hydrochloride, TC) was about 1.4 times that of TO2/GO. In 90 min, the removal ratio of Cu-TiO2/GO for TC was 98%, and the maximum degradation ratio occurred at pH S. After five cycles, the removal ratio of Cu-TO2/GO still exceeded 98%. UV-visible adsorption spectra of Cu-TiO2/GO showed that its band gap was narrower than TiO2/GO. Electron paramagnetic resonance (EPR) spectra test illustrated the generation rate of O-2- and OH was higher in Cu-TiO2/GO system than TiO2/GO and TiO2 system. The contribution sequence of oxidative species was O-2- > holes (h+) > OH in both TiO2/GO and Cu-TiO2/GO system. Interestingly, the contribution of OH in Cu-TiO2/GO was less than that in TiO2/GO during the photo -degradation process. This phenomenon was attributed to the better adsorption performance of Cu-TiO2/GO which could reduce the accessibility of TC to OH in liquid. The enhanced non-hydroxyl radical contribution could be attributed to that the more other active species or sites on (nearby) the surface of Cu-TiO2/GO generated after doping Cu. These results provide a new perspective for the tradition metal-doped conventional catalysts to enhance the removal of organic pollutants in the environment. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

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

 

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is , belongs to copper-catalyst compound. In a document, author is Bai, Wending, Quality Control of (R)-4-Methyl-1,3-dioxolan-2-one.

Synergistic effect of multiple-phase rGO/CuO/Cu2O heterostructures for boosting photocatalytic activity and durability

In this work, a novel multiple-phase heterostructure of reduced graphene oxide/copper oxide/cuprous oxide (rGO/CuO/Cu2O) was proposed, where hierarchical ball-like CuO/Cu2O was grown on rGO in situ by a facile one-pot hydrothermal method. The obtained rGO/CuO/Cu2O heterojunction displayed superior photocatalytic activity with a 99.8% degradation rate for tetracycline (TC) under visible light. Moreover, the stability of the resultant rGO/CuO/Cu2O catalyst was significantly enhanced, where it maintained degradation rate above 90.7% even after 10 consecutive runs. The improved photocatalytic performance and durability of the rGO/CuO/Cu2O heterojunction could be attributed to the interface synergistic effect among CuO, Cu2O and the planner structure of rGO sheets which developed unprecedented polycrystalline structure. Also, rGO not only regarded as an acceptor and transporter of the photogenerated electrons, but also act as photosensitizer to increase the photon capture ability and protector to enhances photocatalytic stability. This work shows a new scheme system of rGO/CuO/Cu2O heterostructure and a more efficient Cu-based semiconductor photocatalyst toward water purification.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 16606-55-6, in my other articles. Quality Control of (R)-4-Methyl-1,3-dioxolan-2-one.

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