Month: March 2021

Electric Literature of 2568-25-4, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 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 Sovacool, Benjamin K., introduce new discover of the category.

When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining

Through the critical lenses of modern slavery, dispossession, and gendering, this study examines the contours of power, patriarchy, and child labor in the artisanal and small-scale mining (ASM) of cobalt in the Democratic Republic of the Congo (DRC). There, a veritable mining boom for cobalt is underway, driven by rising global demand for batteries and other modern digital devices needed for future sustainability transitions. Based on extensive and original field research in the DRC-including 23 semi-structured expert interviews with a purposive sample, 48 semi-structured community interviews with ASM miners, traders, and community members, and site visits to 17 artisanal mines, processing centers, and trading depots-this study asks: What power relations does ASM cobalt mining embed? What are its effects on patriarchy and gender relations? Critically, what is the extent and severity of child labor? It documents the exploitation of ASM miners by the government, the police, and even at times other mining actors such as traders or local communities. It reveals the often invisible gendered nature of mining, showing how many vulnerabilities-in terms of work, status, social norms, and sexual abuse and prostitution-fall disproportionately on women and girls. It lastly reveals sobering patterns of child labor and abuse, again at times by the government or police, but other times by families or mining communities themselves. These factors can at times make cobalt mining a modern form of slavery and a catalyst for social, economic, and even regional dispossession. However, rather than despair, the study also draws from its empirical data to showcase how mining can in selected situations empower. It also proposes a concerted mix of policy reforms aimed the Congolese government (at all scales, including local and national); suppliers and end-user companies for cobalt; and international governments and trading bodies. In doing so, the study humanizes the plight of Congolese cobalt artisanal miners, reveals the power relations associated with the recent mining boom, and also proposes pathways for positive change.

Electric Literature of 2568-25-4, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.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”

 

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. 14347-78-5, Name is (R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol, formurla is C6H12O3. In a document, author is Tang, Chih-Wei, introducing its new discovery. Formula: C6H12O3.

Reforming of methanol to produce hydrogen over the Au/ZnO catalyst

Gold particle with an average size of d(Au) similar to 4 nm was dispersed on ZnO by the deposition precipitation method. The fabricated Au/ZnO catalyst was used to produce hydrogen from reforming of methanol. Four reforming reactions, i.e., decomposition of methanol (DM), steam reforming of methanol (SRM), partial oxidation of methanol (POM) and oxidative steam reforming of methanol (OSRM), were evaluated in a fixed bed reactor. A reaction temperature of T-R > 623 K was required for catalyzing reactions of DM and SRM. Interestingly, high methanol conversion (C-MeOH > 90%) was found from reforming reactions of POM and OSRM at an amazing low temperature of T-R < 473 K. Besides, a presentable hydrogen yield (R-H2 similar to 2.4) and a low selectivity of CO (S-CO similar to 1%) were simultaneously attained from the reaction of OSRM. Therefore, the low temperature OSRM reaction over the Au/ZnO catalyst is suggested as a friendly reforming process for on-board production of hydrogen. (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, Formula: C6H12O3.

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

 

Electric Literature of 2568-25-4, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 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 Matsui, Hirosuke, introduce new discover of the category.

Reversible structural transformation and redox properties of Cr-loaded iron oxide dendrites studied by in situ XANES spectroscopy

Cr-Loaded iron oxide with a dendritic crystalline structure was synthesized and the reversible crystalline phase transition during redox cycling of the iron oxide was investigated. X-ray diffraction and transmission electron microscopy analyses revealed that Cr was well dispersed and loaded in the iron oxide dendrite crystals, whose lattice constant was dependent on the Cr loading. Temperature-programmed oxidation and reduction experiments revealed the reversible redox properties of the Cr-loaded iron oxide dendrites, whose redox temperature was found to be lower than that of Cr-free iron oxide dendrites. In situ Fe K-edge and Cr K-edge X-ray absorption near-edge structure (XANES) analysis indicated that Cr loading extended the redox reaction window for conversion between Fe3O4 and gamma-Fe2O3 owing to compressive lattice strain in the iron oxide spinel structures.

Electric Literature of 2568-25-4, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 2568-25-4.

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 Muller, Andreas, introduce the new discover, HPLC of Formula: C4H6O3.

Shape and Surface Morphology of Copper Nanoparticles under CO2 Hydrogenation Conditions from First Principles

Predicting the state of Cu under a broad range of reaction conditions (pressure and temperature with various adsorbates: CO2, CO, H2O, H*, and O*) is an important property to understand CO2 hydrogenation catalysts. Here, unsupported copper (Cu) nanoparticles (NPs) were modeled in vacuum and under conditions relevant for CO2 hydrogenation conditions from first principles using density functional theory calculations; such models allow precise prediction of particle shapes and surface coverage of the relevant facets of Cu NPs over a large range of conditions relevant to CO2 hydrogenation. This model predicts that the Cu surfaces are fully reduced (in line with experimental results) and free of adsorbed oxygen (O*), H2O*, and CO2* under typical reaction conditions. Furthermore, the Cu(111) facet is at least partially covered with hydrogen (H*) and the Cu(110) facet is partially covered with adsorbed CO* at high reverse-water-gas-shift (RWGS) conversions, while the Cu(100) and Cu(211) facet remain adsorbate-free. Overall, the particle shape of Cu NPs under CO2 hydrogenation conditions is dominated by the (111) facet with a small area of the (100) facet being present (among all the facets considered). The final equilibrium particle shape is set during the initialization of the CO2 hydrogenation reaction and does not change even when the WGS equilibrium is reached.

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. HPLC of Formula: C4H6O3.

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

 

Related Products of 2568-25-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 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 Wang, Lin, introduce new discover of the category.

Encapsulating Copper Nanocrystals into Metal-Organic Frameworks for Cascade Reactions by Photothermal Catalysis

Composite materials with multifunctional properties usually possess synergetic effects in catalysis toward cascade reactions. In this work, a facile strategy to the encapsulation of octahedral Cu2O nanocrystals (NCs) by metal-organic frameworks (MOFs) is reported, and an oriented growth of MOF enclosures (namely, HKUST-1) around Cu2O NCs with desired feedstock ratio is achieved. The strategy defines the parameter range that precisely controls the etching rate of metal oxide and the MOF crystallization rate. Finally, the Cu@HKUST-1 composites with uniform morphology and controlled MOF thickness have been successfully fabricated after the reduction of Cu2O to Cu NCs in HKUST-1. The integration of Cu NCs properties with MOF advantages helps to create a multifunctional catalyst, which exhibits cooperative catalytic activity and improved recyclability toward the one-pot cascade reactions under mild conditions involving visible-light irradiation. The superior performance can be attributed to the plasmonic photothermal effect of Cu NCs, while HKUST-1 shell provides Lewis acid sites, substrates and H-2 enrichment, and stabilizes the Cu cores.

Related Products of 2568-25-4, 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 2568-25-4.

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

 

Electric Literature 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 Andreoli, Enrico, introduce new discover of the category.

CO2-to-ethylene electroreduction gets a boost

Electrochemical CO2 conversion to hydrocarbons has increasingly improved with the development of better catalysts. Now, a copper catalyst modified with a polymer boosts the selectivity for ethylene production to 87%.

Electric Literature 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”

 

Synthetic Route of 18742-02-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 18742-02-4, Name is 2-(2-Bromoethyl)-1,3-dioxolane, SMILES is C(C1OCCO1)CBr, belongs to copper-catalyst compound. In a article, author is Lee, Seung Jun, introduce new discover of the category.

Efficient recovery of palladium nanoparticles from industrial wastewater and their catalytic activity toward reduction of 4-nitrophenol

Discharge of heavy metals from various sources of industrial wastewater poses significant environmental and health concerns. Thus, efficient recovery of precious metals from wastewater employing sustainable, rapid, and cost-effective treatment methods is highly desirable. In this work, palladium nanoparticles (Pd NPs) were successfully recovered from industrial wastewater using a pulsed laser process in the absence of additives or reducing agents. Notably, the developed approach is faster and more environmentally friendly than other conventional recovery methods. The recovered Pd NPs were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and inductively coupled plasma optical emission spectroscopy (ICP-OES). Various pulsed laser parameters (i.e., laser wavelength, power, and irradiation time) were optimized to obtain ideal conditions for the pulsed laser ablation process. Effective recovery of the Pd metal from industrial wastewater was achieved at a laser wavelength of 355 nm, power of 40 mJ/pulse, and irradiation time of 30 min. The Pd NPs exhibited excellent catalytic activity toward the reduction of 4-nitrophenol. Thus, the recovered materials showed remarkable potential for application in degradation of toxic aromatic nitro compounds in the environment. (C) 2020 Elsevier Ltd. All rights reserved.

Synthetic Route of 18742-02-4, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 18742-02-4.

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. 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 Li, Danni, HPLC of Formula: C6H12O3.

Boron doped magnetic catalysts for selective transfer hydrogenation of furfural into furfuryl alcohol

A series of boron doped magnetic zirconium catalysts were developed for the selective transfer hydrogenation of biomass-derived furfural (FFR) into furfuryl alcohol (FA) using 2-propanol as hydrogen source and solvent. Full characterizations with XRD, SEM, TG, Py-IR, NH3-TPD, and CO2-TPD techniques were undertaken to uncover structural properties of magnetic catalysts. Boron doped magnetic zirconium catalysts endowing with adjustable acid-base sites exhibited excellent performance as well as good regenerability in the transfer hydrogenation of FFR, where almost 100% FA yield was achieved in the presence of 2-propanol and the catalyst still sustained good activity after being used five times. Suitable acidity/ basicity ratio of 3.8 similar to 4.0 apparently benefited the selective production of FA. Gratifyingly, the activation energy for FA formation over Zr1B3FeO was as low as 48.3 kJ/mol. In addition, plausible reaction mechanism involving two H-transfer paths for transfer hydrogenation of FFR into FA under the catalysis of active Zr/B species was proposed. (c) 2020 Elsevier Ltd. All rights reserved.

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 14347-78-5, in my other articles. HPLC of Formula: C6H12O3.

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

 

Electric Literature of 18742-02-4, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 18742-02-4, Name is 2-(2-Bromoethyl)-1,3-dioxolane, SMILES is C(C1OCCO1)CBr, belongs to copper-catalyst compound. In a article, author is Le, Son Dinh, introduce new discover of the category.

Effect of support on the formation of CuPd alloy nanoparticles for the hydrogenation of succinic acid

Three kinds of supported CuPd catalysts are studied for the hydrogenation of succinic acid (SA) to value-added chemicals including gamma-butyrolactone (GBL), 1,4-butanediol (BDO), and tetrahydrofuran (THF). The strength of metal-support interaction played an essential role in the construction of CuPd nanoparticles (NPs), inducing different catalytic activity and selectivity. In-depth characterizations revealed that while homogeneous alloys were dominantly constructed on TiO2 and SiO2 supports, heterogeneous alloy with a great extent of Cu segre-gation was preferably formed on gamma-Al2O3. Although a high GBL selectivity was achieved over CuPd/TiO2, large particles with the least Cu segregation caused a lower SA conversion while preventing it from further hydrogenation. In contrast, smaller CuPd NPs with a minority of Cu segregation on SiO2 made it a superior catalyst in the BDO production. Notably, strong Lewis acid sites on gamma-Al2O3 occupied a major role in the formation of highly selective THF with a nearly quantitative yield.

Electric Literature of 18742-02-4, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 18742-02-4 is helpful to your research.

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

 

Related Products of 2568-25-4, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 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 Sajeev, Aparna, introduce new discover of the category.

Efficient electrochemical water splitting using copper molybdenum sulfide anchored Ni foam as a high-performance bifunctional catalyst

The necessity of developing a bifunctional catalyst for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) has increased due to the urge to meet the future renewable energy requirements. This work demonstrated the use of copper molybdenum sulfide nanostructures on Ni foam (CMS/Ni) as a bifunctional catalyst for the HER and OER. Physicochemical characterizations such as X-ray diffraction, X-ray photoelectron spectroscopy, and field-emission scanning electron microscopic analyses confirmed the formation of hierarchical CMS nanostructures on Ni foam using a hydrothermal method. The CMS/Ni electrocatalyst exhibits excellent electrocatalytic properties in an alkaline electrolyte (1 M KOH) with a low overpotential of about 213 and 350 mV for the HER and OER (to drive a current density of 50 mA cm(-2)) and Tafel slope values of 80 and 124 mV dec(-1), respectively. A lab-scale water electrolyzer is constructed using the CMS/Ni electrocatalyst (as anode and cathode), which requires a low voltage of 1.62 V (at a current density of 50 mA cm(-2)) for electrochemical water splitting reaction. The multi-current and long-term stability analysis suggested better electrocatalytic properties of the CMS/Ni electrode. Finally, a self-powered water electrolyzer system was constructed via integration of a solar cell with the fabricated CMS/Ni electrolyzer, which demonstrated potential application towards next-generation energy conversion and management systems.

Related Products of 2568-25-4, 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 2568-25-4.

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