Tag: M.W:100-200

Synthetic Route 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 Kumar, Praveen, introduce new discover of the category.

Highly active and efficient Cu-based hydrotalcite-like structured materials as reusable heterogeneous catalysts used for transcarbonation reaction

A series of robust and efficient Cu-Al hydrotalcite-like compounds (HTLc) as catalysts were prepared by the simple precipitation method with different Cu/Al molar ratios and investigated for the transcarbonation of glycerol with dimethyl carbonate (DMC) for glycerol carbonate (GC) synthesis in a batch reactor. The structural and textural properties of the Cu-Al (HTLc) catalysts were analyzed by several methods like N-2-sorption, SEM-EDX/TEM, XRD, FTIR, CO2-TPD, TGA/DTA and ICP-OES. It was found that the transcarbonation of glycerol is directly dependent on the strong basic sites of the catalysts. The Cu/Al molar ratio has easily tuned the glycerol conversion and the GC yield. Among all synthesized catalysts, the Copper-Aluminum (3Cu-Al@500) catalyst showed excellent catalytic activity for a glycerol conversion (96%) and a GC yield (86%) with reaction rate (irrespective to glycerol) of approximately 0.106 mol L-1 h(-1). Furthermore, the optimization of the reaction conditions (i.e. molar ratio of the reactants, catalyst mass, reaction time and temperature) and the reusability of the 3Cu-Al@500 catalyst for glycerol conversion and GC yield with TOF value were studied. In addition, the effect of stirring speed and particle size on the minimization of external and internal mass transfer resistance, respectively, was investigated. (C) 2020 Elsevier Inc. All rights reserved.

Synthetic Route 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. 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”

 

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 Cruz del Alamo, A.,once mentioned of 16606-55-6.

Catalytic activity of LaCu0.5Mn0.5O3 perovskite at circumneutral/basic pH conditions in electro-Fenton processes

A great challenge in electro-Fenton processes is the development of active heterogeneous catalysts at circumneutral or even basic pH in order to avoid the acidification of the wastewater effluents and the generation of an undesirable metallic sludge after the treatment. In this work, LaCu0.5Mn0.5O3 perovskite has been assessed as heterogeneous electro-Fenton catalyst for the removal of methylene blue dye as model pollutant. The catalyst has been tested in a wide range of pH, from acidic (3) to basic (8.5) values. The effect of the catalyst loading, the applied voltage and the air flow was also studied on the efficiency of the electro-Fenton process. LaCu0.5Mn0.5O3 showed a remarkable activity at circumneutral and basic pH, even at the low current density studied of 2.6-0.9 mA/cm(2). The durability of the catalyst was also assessed for five successive runs. XRD patterns of the reused catalyst evidenced a high stability of the perovskite structure after the several runs. The low copper leaching of the catalyst in the aqueous phase (< 0.05 mg/L for Cu) also proves the stability of the LaCu0.5Mn0.5O3 perovskite material and its main contribution as heterogeneous catalyst to the overall activity of the electro-Fenton system. If you¡¯re interested in learning more about 16606-55-6. The above is the message from the blog manager. Recommanded Product: 16606-55-6.

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

 

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.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 document, author is Totarella, Giorgio, introduce the new discover, SDS of cas: 14347-78-5.

Supported Cu Nanoparticles as Selective and Stable Catalysts for the Gas Phase Hydrogenation of 1,3-Butadiene in Alkene-Rich Feeds

Supported copper nanoparticles are a promising alternative to supported noble metal catalysts, in particular for the selective gas phase hydrogenation of polyunsaturated molecules. In this article, the catalytic performance of copper nanoparticles (3 and 7 nm) supported on either silica gel or graphitic carbon is discussed in the selective hydrogenation of 1,3-butadiene in the presence of a 100-fold excess of propene. We demonstrate that the routinely used temperature ramp-up method is not suitable in this case to reliably measure catalyst activity, and we present an alternative measurement method. The catalysts exhibited selectivity to butenes as high as 99% at nearly complete 1,3-butadiene conversion (95%). Kinetic analysis showed that the high selectivity can be explained by considering H-2 activation as the rate-limiting step and the occurrence of a strong adsorption of 1,3-butadiene with respect to mono-olefins on the Cu surface. The 7 nm Cu nanoparticles on SiO2 were found to be a very stable catalyst, with almost full retention of its initial activity over 60 h of time on stream at 140 degrees C. This remarkable long-term stability and high selectivity toward alkenes indicate that Cu nanoparticles are a promising alternative to replace precious-metal-based catalysts in selective hydrogenation.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 14347-78-5 is helpful to your research. SDS of cas: 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. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, SMILES is O=C1OC[C@@H](C)O1, in an article , author is Wang, Aiyong, once mentioned of 16606-55-6, Formula: C4H6O3.

Remarkable self-degradation of Cu/SAPO-34 selective catalytic reduction catalysts during storage at ambient conditions

A model Cu/SAPO-34 SCR catalyst with all Cu species maintained as isolated Cu(II) ions is synthesized. Following lengthy storage on the shelf under ambient conditions, this catalyst completely and irreversibly deactivates upon any heat treatments above similar to 100 degrees C. Via detailed characterizations with surface area/pore volume analysis, XRD, H-2-TPR, and 27Al, 29Si and 31P solid-state NMR, as well as continuous wave and pulsed EPR studies, it is concluded that over the course of storage, the SCR active sites [Cu(OH)](+) and Bronsted acid sites Si-O(H)-Al are attacked by H2O molecules trapped in the SAPO-34 framework pores, and undergo hydrolysis to form copper hydroxide and terminal Al sites. Upon thermal treatment, these species interact with each other to form copper-aluminate-like species, leading to irreversible deactivation of this catalyst. This deactivation mechanism does not require or necessarily lead to extensive degradation (i.e., crystallinity loss) of the SAPO-34 support.

Interested yet? Read on for other articles about 16606-55-6, you can contact me at any time and look forward to more communication. Formula: C4H6O3.

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

 

Application 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 Fu, Lian-Hua, introduce new discover of the category.

Nanocatalytic Theranostics with Glutathione Depletion and Enhanced Reactive Oxygen Species Generation for Efficient Cancer Therapy

Chemodynamic therapy (CDT) is an emerging therapy method that kills cancer cells by converting intracellular hydrogen peroxide (H2O2) into highly toxic hydroxyl radicals ((OH)-O-center dot). To overcome the current limitations of the insufficient endogenous H2O2 and the high concentration of glutathione (GSH) in tumor cells, an intelligent nanocatalytic theranostics (denoted as PGC-DOX) that possesses both H2O2 self-supply and GSH-elimination properties for efficient cancer therapy is presented. This nanoplatform is constructed by a facile one-step biomineralization method using poly(ethylene glycol)-modified glucose oxidase (GOx) as a template to form biodegradable copper-doped calcium phosphate nanoparticles, followed by the loading of doxorubicin (DOX). As an enzyme catalyst, GOx can effectively catalyze intracellular glucose to generate H2O2, which not only starves the tumor cells, but also supplies H2O2 for subsequent Fenton-like reaction. Meanwhile, the redox reaction between the released Cu2+ ions and intracellular GSH will induce GSH depletion and reduce Cu2+ to Fenton agent Cu+ ions, and then trigger the H2O2 to generate (OH)-O-center dot by a Cu+-mediated Fenton-like reaction, resulting in enhanced CDT efficacy. The integration of GOx-mediated starvation therapy, H2O2 self-supply and GSH-elimination enhanced CDT, and DOX-induced chemotherapy, endow the PGC-DOX with effective tumor growth inhibition with minimal side effects in vivo.

Application of 16606-55-6, 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 16606-55-6.

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 Benhadria, Naceur, once mentioned the application of 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3, molecular weight is 102.09, MDL number is MFCD00798265, category is copper-catalyst. Now introduce a scientific discovery about this category, Application In Synthesis of (R)-4-Methyl-1,3-dioxolan-2-one.

Catalytic Reduction of Methylene Blue Dye by Copper Oxide Nanoparticles

In this paper, the precipitation method was used to synthesize CuO nanoparticles (NPs). Sodium dodecyl sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) were used as a surfactant to modify the surface morphology of the CuO NPs. To investigate the characteristics of the CuO NPs, X-ray diffraction technique (XRD), X-Ray photoelectron spectrometry (XPS), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and Energy dispersive X-ray analysis (EDAX) were used. The catalytic activities of as prepared CuO NPs were evaluated by monitoring reduction of MB dye in the presence of NaBH4 as reducing agent. Effect of catalyst mass, concentration of NaBH4 and concentration of MB dye were investigated. The best results for the reduction of MB dye were obtained by the CuO-SDS catalyst. The results showed that 10 min of reaction time was sufficient to have the total degradation of MB dye. The reuse of the CuO-SDS catalyst for five cycles has shown interesting results via the reduction of MB dye without losing its effectiveness.

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 16606-55-6, Application In Synthesis 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”

 

Reference of 2568-25-4, 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. 2568-25-4, Name is Benzaldehyde Propylene Glycol Acetal, SMILES is CC1OC(C2=CC=CC=C2)OC1, belongs to copper-catalyst compound. In a article, author is In-noi, Orrasa, introduce new discover of the category.

Insight into Fructose Dehydration over Lewis Acid alpha-Cu2P2O7 Catalyst

Key information on direct conversion of fructose into 5-hydroxymethylfurfural (5-HMF) over Lewis acid sites was investigated by combining experimental and computational studies. A series of alpha-copper pyrophosphate (alpha-Cu2P2O7) was synthesized and used as a heterogeneous catalyst model for bifunctional acid-catalyzed fructose dehydration under hot compressed water at mild temperature. Structural and phase transformations of the catalyst samples were systematically characterized by in situ X-ray absorption spectroscopy (in situ XAS), X-ray powder diffraction (XRD) and Transmission electron microscopy (TEM). The type of acidic site was verified by in situ pyridine-adsorbed Fourier-transform infrared spectroscopy (in situ Py-FTIR). Results revealed that calcination temperature greatly impacted microstructure, acid strength, and activity of the alpha-Cu2P2O7 catalysts. Lewis acid sites showed the main activity on alpha-Cu2P2O7 catalyst surfaces. Catalytic performance was strongly dependent on reaction temperature and reaction time. Under optimal reaction condition, the calcined sample at 900 degrees C exhibited the best catalytic performance with 5-HMF production yield of 42.0%. Results from density functional theory (DFT) revealed that fructose dehydration over alpha-Cu2P2O7 catalyst was enhanced by increasing reaction thermodynamics via Lewis acid sites.

Reference of 2568-25-4, 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 2568-25-4 is helpful to your research.

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

 

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, molecular formula is , belongs to copper-catalyst compound. In a document, author is Wu, Wangping, Quality Control of (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol.

Electrodeposition of Ir-Co thin films on copper foam as high-performance electrocatalysts for efficient water splitting in alkaline medium

Iridium-based bimetallic alloy system with unique performance is of great interest for high-temperature corrosive environment as a barrier layer or for water splitting of hydrogen/oxygen evolution reactions as a highly efficient and stable electrocatalyst. In this work, iridium-cobalt (IreCo) thin films were galvanostatically electrodeposited on a copper (Cu) foam electrode as an electrocatalyst for water splitting in 1.0 M KOH alkaline medium. The effects of loading and solution temperature on hydrogen evolution performance of Ir-Co deposits were investigated. The results show that Ir-Co deposits were adhered to substrates, with porous structure and hollow topography. The concentrations of Ir in the deposits with the loadings of 4.6, 3.2 and 0.8 mg.cm(-2) were 88, 88 and 75 wt%, respectively. IreCo deposit with the loading of 3.2 mg.cm(-2) required an overpotential of 108 mV for hydrogen evolution reaction to reach a current density of 30 mA cm(-2), having a low Tafel slope value of 36 mV.dec(-1). The changes in the solution temperature and catalyst loading had a significant effect on hydrogen evolution performance of Ir-Co/Ir-Co-O electrocatalysts. With the increasing of catalyst loading, the electrocatalytic activity increased firstly and then decreased. As the solution temperature was increased from 20 to 40 degrees C, the electrocatalytic activity of Ir-Co-O electrocatalyst increased, and then decreased with the rising of temperature. The apparent thermal activation energy obtained from Arrhenius plot was similar to 13.9 kJ mol(-1). Ir-Co/Ir-Co-O deposits exhibited relatively good electrocatalytic stability and durability. The present work demonstrates a possible pathway to develop a highly active and durable substitute for thin film electrocatalysts for water splitting of hydrogen evolution reaction. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

If you are hungry for even more, make sure to check my other article about 14347-78-5, Quality Control 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”

 

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, molecular formula is C4H6O3, belongs to copper-catalyst compound. In a document, author is Wang, Yancheng, introduce the new discover, Quality Control of (R)-4-Methyl-1,3-dioxolan-2-one.

A thermally autonomous methanol steam reforming microreactor with porous copper foam as catalyst support for hydrogen production

Methanol steam reforming microreactors can be used for hydrogen production in industry applications. This paper presents a novel thermally autonomous methanol steam reforming microreactor that uses porous copper foam as catalyst support to enhance the performance of hydrogen production. The proposed microreactor mainly consists of a vaporizer, a catalytic combustor, and a methanol steam reformer. It uses a Pt/Al2O3 catalyst with 0.15% Pt for methanol combustion and a CuO/ZnO/Al2O3 catalyst-coated copper foam for methanol steam reforming. A numerical model was developed to study the fluid flow and heat transfer characteristics in the porous copper foam and a thin-layer of coated catalyst. Simulation results revealed that the pressure drop and velocity gradient of the microreactor increased when the weight of the catalyst increased. Experimental tests were conducted to study the effects of catalyst loading on the methanol conversion, hydrogen production, and overall efficiency of the microreactor. The results indicate that the developed microreactor can be successfully startup within 13 min and its overall efficiency is approximately 35-45%. The results obtained in this research can be used to develop a highly efficient methanol steam reforming microreactor for hydrogen production. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 16606-55-6. 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”

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 18742-02-4, Name is 2-(2-Bromoethyl)-1,3-dioxolane, SMILES is C(C1OCCO1)CBr, in an article , author is Tkach, Volodymyr V., once mentioned of 18742-02-4, Computed Properties of C5H9BrO2.

Theoretical Evaluation for the Function of Economical and Green Conducting Composite Material-based Chip for Jamaican Vomiting Sickness Diagnostics

A possibility of an economical and green conducting-polymer composite base chip for Jamaican vomiting sickness diagnostics by hypoglycin electrochemical determination has been evaluated. The correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been detected that the chip is efficient for either reduced or semi-oxidized form determination in an efficient manner, so it may serve as a rapid hypoglycin intoxication diagnostics tool. On the other hand, as all of the correspondent components possess amino acid moieties, influencing the double electric layer ionic forces.

Interested yet? Read on for other articles about 18742-02-4, you can contact me at any time and look forward to more communication. Computed Properties of C5H9BrO2.

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