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Showing 1 to 18 of 18 for “"Alcohol oxidation"”.
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Organoosmium(IV) Hydroxo Complexes and the Synthesis of Heterobimetallic Catalysts for Aerobic Alcohol Oxidation
Chapter 4. The compounds dibenzoylmethane and N-phenylsalicylaldimine react with VOCl3 in toluene to generate complex V(O)Cl2(dbm) (dbm =C6H5C(O)CHC(O)C 6H5) and a complex of the empirical formula C13H 11Cl3NO2V. The square pyramidal complex V(O)Cl 2(dbm) is a black solid that is stable in …
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Understanding the promotion of aerobic oxidation of benzyl alcohol over Pt-based catalysts
… to the existing methodologies for the oxidation of alcohol substrates to aldehydes, ketones and/or carboxylic acid products. However, a potential risk is apparent upon the use of volatile and flammable organic solvents, specifically in the presence of molecular oxygen. This makes the …
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The kinetics of the chromic acid oxidation of acetaldehyde
The kinetics for the reaction of the oxidation of acetaldehyde by chromic acid in aqueous medium has been studied in an attempt to extend the present knowledge of oxidation by chromic acid. In particular, these experiments were undertaken in order to see if there are any similarities between this …
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… reactions, such as low-temperature CO-oxidation and selective alcohol oxidation. Most current research focuses on heterogenous gold catalysis, with metal oxides being the most commonly employed support material for AuNPs. However, metal oxides are challenging to evenly distribute in …
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Development of Sustainable Catalytic Systems For Oxidation Reactions
Oxidations are a fundamental class of reactions in organic chemistry.Furthermore, the ability to carry out such transformations in an efficient and selective manner has the potential for widespread application in the production of both bulk and fine chemicals, pharmaceuticals, agrochemicals and …
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Metal oxide electrocatalysts for alternative energy technologies
… synthesis and the use of mixed metal oxides for alcohol oxidation. Presently, Pt is the most active and efficient metal catalyst for alcohol oxidation in fuel cells. It is necessary to develop cheaper, earth abundant metals that can replace Pt. Mixed metal oxides based on Mo-V-(Te,Nb)-O were …
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Aminoxyl Catalyzed Electrochemical Ethanol Detection: Development of a New Breathalyzer Using Molecular Catalysis
Blood alcohol concentration (BAC) is the indicator of alcohol intoxication, and its measurement has emerged as the most common analytical procedure requested by law enforcement. Due to its volatility, ethanol vapor can be detected in breath, and its vapor concentration is proportional to BAC. While …
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Utilizing viruses to probe the material process - structure - property relationship : controlling catalytic properties via protein engineering and nanoscale synthesis
… supports to identify a selective, base free alcohol oxidation catalyst. Finally, the surface proteins of the M13 virus were modified to mirror homogeneous copper-ligand chemistries. These viruses displayed binding pocket free copper complexation and catalytic efficacy in addition to …
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Synthesis of 4-(trifluoromethyl)azetidin-2-one building blocks and their transformation into novel CF3-substituted amines and heterocyclic systems
… second class of new building blocks. The latter alcohols enabled the construction of CF3-containing ring-rearranged products, including aziridines through a ring-contraction protocol via 3-chloro-β-lactam intermediates and dioxan-2-ones via initial O-allylation. Furthermore, alcohol oxidation …
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Electrochemical and Photocatalytic Flow Strategies for Sustainable Substrate Oxidation
… flow. An investigation into the aerobic oxidation of a variety of organic substrates was made, and a comparison between the performance of batch and flow CNx photoreactors was conducted. Design of the initial flow prototype involved some computational fluid dynamics analysis and was based …
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Carbon nitride for solar H2 production coupled to organic chemical transformations
… as efficient light harvesters, to couple alcohol oxidation with proton reduction, in the presence of a Ni-based molecular catalyst. This system operated in a single compartment while the oxidation and reduction products were collected in the solution and gaseous phases, respectively, …
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Upgrading alcohols with bio-oxidation and chemo-catalysis in single-flask processes
… processes. In this vein, our group targets alcohol substrates for upgrading with biocompatible chemistry. Alcohols are attractive targets for their easy access from renewable feedstocks yet scarce opportunities for upgrading in water. Since alcohols are relatively inert towards traditional …
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Tailored diketopyrrolopyrrole-based organic dyes in photoelectrochemical cells for solar fuel synthesis
… of a DPP chromophore and ruthenium-based water oxidation catalyst is described. The dyad features suitable light absorption in the visible region and photoinduced hole transfer from the dye to the catalyst unit. Immobilisation of the dyad on a mesoporous TiO₂ scaffold was optimised, and the …
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Functionalized Metal-Organic Frameworks for Water Oxidation Catalysis
… valuable energy resource. Catalysts for water oxidation are the essential component of water splitting cells which have been intensively studied. As a solid state porous crystalline material with synthetic tunability, Metal-organic framework (MOF) is a promising platform for water oxidation …
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Designing and optimizing tandem bio- and chemo-catalyzed cascade reactions to access industrially relevant chemicals in mild, aqueous conditions
… system capable of converting short chain primary alcohols to α,β-unsaturated aldehydes in aqueous conditions. Alcohol substrates are oxidized to the corresponding aldehyde by the biocatalyst, whole cell Gluconobacter oxidans (G. oxidans), followed by an organocatalyzed aldol addition-condensation …
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Control and Prediction of Polymer Network Structure and Connectivity for Sustainability, Stimuli-Response, and Catalytic Function
… of catalysis. We demonstrate this strategy for alcohol oxidation reactions catalyzed by a nitroxide, and intramolecular ring closing of allenols and alkynoic acids catalyzed by a Au(I) phosphine complex. In the latter example, of catalyst colocalization within the MOC cross-link increases …
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Supported Metalloporphines as novel and bioinspired Lignolytic Peroxidase-like Catalysts
… showed a remarkable ability to catalyze veratryl alcohol oxidation at the expenses of H2O2. Kinetic and operational characterization of the catalysts is also reported. Both lignin peroxidase and manganese peroxidase–like catalysis have been obtained, under very mild experimental conditions, using …
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Anodic alcohol fuel cell reactions at platinum active sites on doped metal oxide supports
… to replace carbon as a supporting material in alcohol fuel cells. In an alkaline environment, Pt/TOMS displayed faster kinetics and less poisoning during the methanol and ethanol oxidation reactions compared to the commercial Pt/C. When compared in an acidic ethanol and methanol oxidation, …