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Showing 1 to 15 of 15 for “"Methyl Ethyl Ketone"”.
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Conversion of methyl ethyl ketone (MEK) to valuable chemicals over multifunctional supported catalysts
… work describes the conversion of bio-derived methyl ethyl ketone (MEK) into different useful chemicals. The first part discusses the direct conversion of MEK to butene over supported copper catalysts (Cu-Al₂O₃, Cu-zeolite Y sodium (Cu-ZYNa) and Cu-zeolite Y hydrogen (Cu-ZYH)) in a fixed bed …
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Modeling, Simulation, and Optimization of an Electroorganic Process Flowsheet
… oxidation of secondary butyl alcohol to methyl ethyl ketone in an aqueous sulfuric acid solution. Experimental measurements were performed to calculate rate constants for an adsorption isotherm for butanol on platinum in order to elicit a kinetic expression for use in the electrochemical …
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The Oximes of 1-(3-Methoxy-4-Agetoxyphenyl)-2, 6-Dicarbethoxycyclohex-Anedione-3,5 and their Derivatives
… acid esters on compounds containing reactive methylene groups. These isonitroso compounds rearrange to oximes. |Oximes are most often used for purposes of preparing 1,2 dike to compounds. Thus the hydrolysis of Nitroso methyl ethyl ketone gives biacetyl, which is important in the preparation …
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Positronium formation in organic liquids and studies of micelle, liposome and polymer systems by position annihilation technique
… liposomes, was studied in sonicated dioctadecyldimethylam-monium chloride versicles (DODAC). The results obtained provide important information on fluidities and allow further assessments of cationic surfactant vesicles as membrane mimetic agents. The third application deals with the study of …
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Structural and Synthetic Studies of Potential Antitumor Natural Products
Bioassay directed fractionation of the methyl ethyl ketone extract of Chiloscyphus rivularis yielded eight sesquiterpenoids, and detailed spectroscopic interpretation led to the assignment of their structures as 12-hydroxychiloscyphone, chiloscypha-2,7-dione, 12-hydroxychiloscypha-2,7-dione, …
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The alkaline hydrolysis of esters in aqueous-organic solvent mixtures. The effects of solvents and of the activity coefficients of reactants on the kinetics of the alkaline hydrolysis of methyl acetate in aqueous dioxan, aqueous dimethyl sulphoxide and aqueous diglyme (bis (2-methoxyethyl ) ether) mixtures as solvents.
… the rate constant for the alkaline hydrolysis of methyl acetate in various aqueous-organic solvent mixtures (dimethyl sulfoxide 0<x40.2, dioxane 0 <, x., < 0.2, methyl ethyl ketone 0<x<0.06 and diglyme, i. e. ether-bis (2-methyloxethyl) 0x<0.10) have been determined for the temperatures 15 0 C, 25 …
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Structural and synthetic studies of bioactive natural products
Bioassay directed fractionation of the methyl ethyl ketone extract of Crescentia cujete resulted in the isolation of nine bioactive compounds, and detailed spectroscopic interpretation led to the assignment of their structures as (2S,3S)-3-hydroxy-5,6-dimethoxy dehydroiso-α-Iapachone [2.10], …
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Lyocell Fiber-Reinforced Cellulose Ester Composites-Manufacturing Considerations and Properties
… Solution prepregging technique using methyl ethyl ketone (MEK) as a solvent for CAB and continuous fibers as reinforcement produced composites with uniform matrix distribution, high tensile strengths and high modulus, and even wetting of fibers by CAB. A maximum tensile modulus of 21.5 …
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Studies of the Evaluation of Solid Phase Dispersants in Polymer Blends
… of thermoplastic polymers. Low-density polyethylene (LDPE) and polystyrene (PS) were chosen for this study because of the mechanical properties of these blends. To improve performance, block and graft copolymers of ethylene-styrene as solid phase dispersants (SPDs) were added to blends …
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The effect of oxygenates on the oligomerisation of propene over zeolite ZSM-5
… such as acetic acid, ethanol, butanol, methyl-ethyl-ketone (MEK), acetone and water. Complex feeds can result in competitive reaction between the feed components and may result in observed selectivities that cannot be predicted from pure component data alone. ZSM-5 has been shown to be …
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Biofiltración de compuestos orgánicos volátiles utilizando diferentes tipos de lecho basados en mezclas de compost de RSU-poda: monitorización mediante diversas técnicas
… emitted during the MSW- P co-composting) and Methyl ethyl ketone (MEK). Monitoring the efficiency of the biofiltration system was carried out using a photoionization analyser, a commercial electronic nose (e-nose) and gas chromatography ¿ mass spectrometry (GC/MS). Results indicated that …
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Surface characterization and adhesive bonding of carbon fiber-reinforced composites
… matrix composites was studied. Methyl ethyl ketone (MEK) wipe, peel ply, grit blast and gas plasma treatments were the pretreatments of interest. Chemical and physical changes which occurred in the cured composite surfaces following pretreatment were characterized with x-ray …
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Synthesis, Characterization, And Properties Of Peroxo-Based Oxygen-Rich Compounds For Potential Use As Greener High Energy Density Materials
… (TATP), diacetone diperoxide (DADP), hexamethylene triperoxide diamine (HMTD), and methyl ethyl ketone peroxide (MEKP) are the only well-studied highly energetic peroxides. However, due to their high impact and friction sensitivities, low thermal stabilities, and low detonation velocities …
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Detectability of biosignature gases in the atmospheres of terrestrial exoplanets
… database: oxygen, ozone, methane, nitrous oxide, methyl bromide, methyl chloride, hydrogen sulfide, carbonyl sulfide, phosphine, and sulfur dioxide. The deep investigation of the HITRAN biosignature gases in this study is possible due to the ability to properly map their absorption cross sections …
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Experimental and numerical evaluation of electrothermal–swing adsorption for capture and recovery or destruction of organic vapors
… to capture and recover an organic vapor (e.g., methyl ethyl ketone, MEK) from air streams. Factors that can increase the adsorbate liquid recovery with low energy costs were investigated using sequentially designed sets of laboratory experiments. Initially, the screening experiments were …