Category: 14347-78-5

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, in an article , author is Kazmierczak, Kamila, once mentioned of 14347-78-5, COA of Formula: C6H12O3.

Activity of heterogeneous supported Cu and Ru catalysts in acceptor-less alcohol dehydrogenation

Acceptor-less alcohol dehydrogenation reaction allows the co-production of added-value carbonyl compounds and H-2 from alcohols. Focusing on supported Ru and Cu catalysts, we evaluated the support effect on the dehydrogenation of 2-octanol and 1-octanol and identified the side products as resulting from aldolisation coupling. The most active and selective catalysts were then tested on the aliphatic vicinal-diol octan-1,2-diol and the highest conversion was reached using Cu/ZrO2 (60%) with a high selectivity (94%) towards 1-hydroxy-2-octanone.

Interested yet? Read on for other articles about 14347-78-5, you can contact me at any time and look forward to more communication. COA of Formula: C6H12O3.

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, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, molecular formula is C6H12O3. In an article, author is Benhammada, Abdenacer,once mentioned of 14347-78-5, SDS of cas: 14347-78-5.

Green synthesis of CuO nanoparticles using Malva sylvestris leaf extract with different copper precursors and their effect on nitrocellulose thermal behavior

In this work, we have synthesized copper oxide nanoparticles (CuO NPs) by a precipitation method using leaf extract of Malva sylvestris as a stabilizing agent and three different copper precursors. The obtained CuO NPs have been characterized in detail by X-ray diffraction, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy. The as-prepared CuO NPs present the same pure chemical composition and belong to a monoclinic crystalline phase, with a spherical shape and crystallite diameter in the range of 19-26 nm, according to their precursors. Based on the differential scanning calorimetry (DSC) analyses performed at different heating rates, the thermal behavior of pure nitrocellulose (NC) and NC-CuO NPs composites has been investigated using four integral isoconversional kinetic methods. The obtained results show that, whatever the precursor, CuO NPs could be safely used as a catalyst for NC. Moreover, the added nanocatalysts could reduce the activation energy and slightly decrease the peak temperature. Finally, the thermal decomposition process of both NC and NC-CuO composites determined with Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa) models, respectively, is classified as R2, contracting cylinder g (alpha) = 1 – (1 – alpha)(1/2), whereas that of Trache-Abdelaziz-Siwani integral model is ascribed to F-1/3 and F-3/4 chemical reaction g (alpha) = 1 – (1 – alpha)(2/3).

Interested yet? Keep reading other articles of 14347-78-5, you can contact me at any time and look forward to more communication. SDS of cas: 14347-78-5.

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

 

Application of 14347-78-5, Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, belongs to copper-catalyst compound. In a article, author is Tountas, Athanasios A., introduce new discover of the category.

Continuous reactor for renewable methanol

For society and corporations to decisively shift to fossil fuel alternatives and avoid the likely devastating consequences of climate change and ecosystem destruction of ‘business-as-usual’, a renewable pathway to carbon net-neutral or net-negative feedstocks is of utmost importance. Methanol (MeOH) is a promising candidate but is still produced with conventional natural gas to syngas technology. The need for fossil-free and less costly syngas routes to MeOH has been the focus of immense academic effort. Towards this end, this study details a version 1.0 tool for investigating prospective photochemical and thermal heterogeneous MeOH synthesis catalysts and present thermal benchmarking data with a commercial copper-zinc oxide-alumina (CZA) catalyst. The testing conditions use a 3 : 1 H-2 : CO2 syngas ratio, temperatures from <448-533 K (<175-260 degrees C), and pressure up to 0.78 MPa. These conditions allow for more efficient CO2 utilization by improving low-temperature MeOH yield and reducing capital and operating costs of process equipment. The reactor performance is validated with respect to the literature and also a rate model based on a Langmuir-Hinshelwood-Hougen-Watson (LHHW) mechanism with good agreement. This verifies that the system behaves isothermally and predictably. This unique system can be configured to screen catalysts both thermally and with light, and expanded to commercial test conditions and scales. At aspirational low-temperature and low-pressure conditions, 398 K (125 degrees C) and 1.0 MPa (comparable P to this study), the MeOH equilibrium per-pass yield is a respectable 8.8 mol% with comparable high-P equipment costs to current commercial operations. Application of 14347-78-5, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 14347-78-5.

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

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, in an article , author is Lu, Chenyang, once mentioned of 14347-78-5, COA of Formula: C6H12O3.

Copper-Based Catalysts for Selective Hydrogenation of Acetylene Derived from Cu(OH)(2)

Replacing precious metals with cheap metals in catalysts is a topic of interest in both industry and academia but challenging. Here, a selective hydrogenation catalyst was prepared by thermal treatment of Cu(OH)(2) nanowires with acetylene-containing gas at 120 degrees C followed by hydrogen reduction at 150 degrees C. The characterization by means of transmission electron microscopy observation, X-ray diffraction, and X-ray photoelectron spectroscopy revealed that two crystallites were present in the resultant catalyst. One of the crystal phases was metal Cu, whereas the other crystal phase was ascribed to an interstitial copper carbide (CuxC) phase. The reduction of freshly prepared copper (II) acetylide (CuC2) at 150 degrees C also afforded the formation of Cu and CuxC crystallites, indicating that CuC2 was the precursor or an intermediate in the formation of CuxC. The prepared catalysts consisting of Cu and CuxC exhibited a considerably high hydrogenation activity at low temperatures in the selective hydrogenation of acetylene in the ethylene stream. In the presence of a large excess of ethylene, acetylene was completely converted at 110 degrees C and atmospheric pressure with an ethane selectivity of <15%, and the conversion and selectivity were constant in a 260 h run. Interested yet? Read on for other articles about 14347-78-5, you can contact me at any time and look forward to more communication. COA of Formula: C6H12O3.

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

 

Related Products of 14347-78-5, 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. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, belongs to copper-catalyst compound. In a article, author is Zhou, Ying, introduce new discover of the category.

Kinetic identification of three metal ions by using a Briggs-Rauscher oscillating system

In this paper, a kinetic method for identification of metal ions (Fe3+, Cu2+ and Ag+) was reported by using their perturbation effects on a Briggs-Rauscher (BR) oscillating system involving a tetraazamacrocyclic complex [NiL] (ClO4)(2) as a catalyst. The ligand (L) in the catalyst is 5,7,7,12,14, 14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene. When an equal amount of analytes (metal ions) were separately added to the active BR system under the same concentration, quite different perturbation results were obtained in their concentration ranges from 1.0 x 10(-4) to 2.0 x 10(-3) mol/L. Furthermore, based on the FCA and NF models, the perturbation mechanisms of three metal ions on BR system were explained in details. It is shown that the different perturbation manners are attributed to kinetic-controlled mechanisms. Such mechanisms suggested that both Fe3+ and Cu2+ may face a competitive reaction with IO3- to form iodate precipitate when they react with I- (an intermediate in BR system) vs redox reaction, whereas Ag+ directly binds to Ito generate AgI without a competitive reaction which yields iodate precipitate. Also, the method could be used for quantitative determination of Ag+.

Related Products of 14347-78-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 14347-78-5 is helpful to your research.

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

 

In an article, author is Wu, Lianqian, once mentioned the application of 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, molecular formula is C6H12O3, molecular weight is 132.1577, MDL number is MFCD00003213, category is copper-catalyst. Now introduce a scientific discovery about this category, Application In Synthesis of (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol.

Anionic Bisoxazoline Ligands Enable Copper-Catalyzed Asymmetric Radical Azidation of Acrylamides

Asymmetric radical azidation for the synthesis of chiral alkylazides remains a tremendous challenge in organic synthesis. We report here an unprecedented highly enantioselective radical azidation of acrylamides catalyzed by 1 mol % of a copper catalyst. The substrates were converted to the corresponding alkylazides in high yield with good-to-excellent enantioselectivity. Notably, employing an anionic cyano-bisoxazoline (CN-Box) ligand is crucial to generate a monomeric Cu-II azide species, rather than a dimeric Cu-II azide intermediate, for this highly enantioselective radical azidation.

Do you like my blog? If you like, you can also browse other articles about this kind. Thanks for taking the time to read the blog about 14347-78-5, Application In Synthesis of (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol.

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

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Recommanded Product: (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, in an article , author is Dastgheib, Seyed A., once mentioned of 14347-78-5.

Evaluation of Modified Activated Carbons for Mercury Reemission Control During Neutralization of a Simulated Wastewater from the Direct Contact Cooler of a Pressurized Oxy-Combustion Process

Pressurized oxy-combustion is one of the most efficient emerging combustion systems for coal-based power generation with CO2 capture. Mercury reemission and the fate of mercury, arsenic, and selenium in the liquid phase during neutralization of a simulated wastewater from the direct contact cooler of a pressurized oxy-combustion process are investigated. The performance of selected commercial activated carbons (ACs) or modified ACs impregnated with sulfur or transition metals have been investigated and compared with a commercial additive for mercury reemission control. Sorbent addition, compared with the baseline case (i.e., no sorbent or additive), could increase or decrease mercury reemission during neutralization by a limestone slurry. The addition of selected commercial ACs to the solution was detrimental to mercury reemission control, as indicated by an increase in the cumulative mercury reemission by up to 5 times. In contrast, the addition of ACs impregnated with elemental sulfur, iron, or copper decreased mercury reemission by up to 90%, likely because of the adsorption of mercury by sulfur or metal species dispersed on the AC surface. Adsorption experiments showed that ACs with suitable properties could control mercury reemission and remove mercury and arsenic from a simulated wastewater, with some even outperforming the commercial additive used for mercury reemission control. However, none of the tested ACs or the commercial additive was effective in removing selenium. Overall, a combination of two mechanisms, namely, the adsorption of mercury onto AC adsorption sites and the reduction of the soluble ionic mercury to volatile elemental mercury by the AC, may control mercury reemission in the presence of an AC sorbent.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 14347-78-5, you can contact me at any time and look forward to more communication. Recommanded Product: (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol.

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

 

Related Products of 14347-78-5, 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. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, belongs to copper-catalyst compound. In a article, author is Keskin, Zeycan, introduce new discover of the category.

Effects of hydrogen addition into liquefied petroleum gas reductant on the activity of Ag-Ti-Cu/Cordierite catalyst for selective catalytic reduction system

In this study, low temperature activity of Ag-Ti-Cu/Cordierite catalyst was investigated with liquefied petroleum gas (LPG) and hydrogen-liquefied petroleum gas (H-2-LPG) mixture as reductant. The selective catalytic reduction (SCR) catalyst was synthesized by impregnation method and characterized by Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) analyzes. BET analysis of the catalyst revealed surface area as 12.89 m(2)/g. Silver (Ag), titanium (Ti) and copper (Cu) nanoparticles were observed on the catalyst surface with SEM analysis. XRD analysis showed high dispersion of catalytic elements. The SCR performance tests were carried out at 170-270 degrees C temperature range, 30,000 h(-1) and 40,000 h(-1) space velocities, 1 kW, 2 kW, 3 kW and 4 kW engine loads with diesel engine real exhaust gas sample. NOx conversion efficiency increased significantly in the presence of H-2, especially at low exhaust temperatures. The maximum NOx conversion ratio was obtained as 89.53% with H-2-LPG reductant at 270 degrees C, 4 kW engine load and 30,000 h(-1) space velocity. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Related Products of 14347-78-5, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 14347-78-5.

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

 

Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Chen, Guoqian, once mentioned the application of 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, molecular formula is C6H12O3, molecular weight is 132.1577, MDL number is MFCD00003213, category is copper-catalyst. Now introduce a scientific discovery about this category, Recommanded Product: 14347-78-5.

Enhanced efficiency for carbon dioxide electroreduction to formate by electrodeposition Sn on Cu nanowires

Electroreduction of CO2 to formate is one of the most promising methods for CO2 utilization and conversion. However, low conversion efficiency and poor stability of electrodes limit its practical application. In this study, Sn are electrodeposited on copper nanowires (Sn/Nano-Cu) to serve as the electrode for the electroreduction of CO2 to formate. Results show that Sn nanoparticles are uniformly distributed on copper nanowires. When the potential of -1.2 V (vs. RHE) is applied, the prepared Sn/Nano-Cu electrode exhibits the maximum Faradaic efficiency as high as 86.8 % with a current density of 38.0 mA cm(-2). The formate production rate reaches 575.1 +/- 24 mu mol h(-1) cm(-2), which is 1.9 and 2.9 times that of the Sn/Cu and Sn foil electrode, respectively. The excellent CO2 electrochemical reduction performance may be attributed to the large electroactive surface area and low charge transfer resistance. Moreover, the Sn/Nano-Cu electrode can maintain high Faraday efficiency during 25 h test. The superior electrocatalytic performance as well as good stability for CO2 electroreduction is achieved by the Sn/Nano-Cu electrode.

Do you like my blog? If you like, you can also browse other articles about this kind. Thanks for taking the time to read the blog about 14347-78-5, Recommanded Product: 14347-78-5.

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

 

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, SMILES is OC[C@H]1OC(C)(C)OC1, in an article , author is Zheng, Chaohe, once mentioned of 14347-78-5, Computed Properties of C6H12O3.

The microscopic oxidation mechanism of NH3 on CuO(111): A first-principles study

Understanding the oxidation of ammonia (NH3) over CuO surface and then the formation routes of N-2 and NOx is rather crucial to provide a favorable direction for the rational design of high-performance Cu-based oxygen carriers in chemical looping combustion (CLC) and CuO-containing catalysts in selective catalytic reduction (SCR). This study aims to investigate the reaction mechanisms of nitrogen-containing species using density functional theory (DFT) calculations. The potential dehydrogenation pathway is identified as NH3* -> NH2* + H* -> NH(1)* + 2H* -> N(2)* + 3H*, and the rate-determined step is the NH2* dehydrogenation. Additionally, we consider 10 dominating elementary reactions for the formation of N-2, NO, NO2 and N2O; two skeletal schemes of the NH3 oxidation under low or high temperature conditions are then proposed. Under the low temperature condition of SCR, the majority of gaseous N-2 comes from the Eley-Rideal reaction between NH2* fragment and gaseous NO, while the lateral recombination of N* to form N-2 might play a more crucial role under the high temperature condition of CLC. The high temperature and surface adsorbed oxygen provide positive impacts on the yield of gaseous NO and NO2, respectively. Finally, the effects of O-2 and H2O on the fate of nitrogen during heterogeneous reactions have also been determined.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 14347-78-5, you can contact me at any time and look forward to more communication. Computed Properties of C6H12O3.

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