Topic
Acetone
About: Acetone is a research topic. Over the lifetime, 9458 publications have been published within this topic receiving 120867 citations. The topic is also known as: propanone & dimethylketone.
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TL;DR: In this paper, the thermal conductivity of 12 pure organic solvents, acetone, acetonitrile, acrylonitrile and carbon tetrachloride, chloroform, 1,2-dichloroethane, ethanol, ethyl acetate, heptane, tetrahydrofuran, toluene, and water, and eight binary mixtures, were measured by an absolute transient hot-wire method at some selected temperatures from 253.15 K to 303.15
Abstract: The thermal conductivity of 12 pure organic solvents, acetone, acetonitrile, acrylonitrile, carbon tetrachloride, chloroform, 1,2-dichloroethane, ethanol, ethyl acetate, heptane, tetrahydrofuran, toluene, and water, and eight binary mixtures, acetone + ethanol, acetone + ethyl acetate, ethanol + heptane, ethanol + carbon tetrachloride, ethyl acetate + ethanol, heptane + acetone, heptane + toluene, and water + ethanol, were measured by an absolute transient hot-wire method at some selected temperatures from 253.15 K to 303.15 K. A correlation previously developed was used to calculate the thermal conductivity. The agreement between the experimental and the calculated thermal conductivities is satisfactory.
72 citations
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TL;DR: In this article, the authors investigated the reactivity of volatile organic compounds (VOCs) on oxide particles and found that these carbonyl compounds irreversibly adsorb and can, in part, react on the surface to form larger molecular weight compounds.
Abstract: The heterogeneous reactivity of volatile organic compounds (VOCs) on oxide particles has been investigated. Oxide particles composed of the most abundant elements present in the Earth's crust were used to identify potentially important reactions of VOCs on mineral dust. In particular, heterogeneous reactions of acetaldehyde, acetone, and propionaldehyde on α-Al2O3, α-Fe2O3, TiO2, CaO, and SiO2 particle surfaces have been investigated. Fourier transform infrared and UV/visible spectroscopic measurements show that these carbonyl compounds weakly and reversibly adsorbed on SiO2. However, on the more basic and acidic oxides investigated, the data show that these carbonyl compounds irreversibly adsorb and can, in part, react on the surface to form larger molecular weight compounds. The kinetics of the heterogeneous reaction of acetaldehyde, acetone, and propionaldehyde on α-Al2O3, α-Fe2O3, TiO2, CaO, and SiO2 were measured with a Knudsen cell reactor at a gas concentration of 6×1010 molecules/cm3. Using the Brunauer-Emmett-Teller surface area of the powdered sample, initial uptake coefficients were determined to be in the 10−4 to 10−6 range for the adsorption of carbonyl compounds on the oxides at 298 K. By using these values for the uptake coefficient, it is found that the heterogeneous loss of these trace volatile organic compounds is comparable to that due to photolysis and reaction with OH in the middle to upper troposphere. Although surface adsorption can occur, the measured second-order pressure dependence to form higher molecular weight compounds suggests that these reaction products will less likely form under atmospheric conditions.
72 citations
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TL;DR: In this article, the 12-tungstophosphoric acid (HPW) and its insoluble salts containing either caesium or ammonium cations were encapsulated into channels of a MCM-41 molecular sieve and they were used as catalyst for the liquid phase synthesis of Bisphenol-A from phenol and acetone.
Abstract: The 12-tungstophosphoric acid (HPW) and its insoluble salts containing either caesium or ammonium cations were encapsulated into channels of a MCM-41 molecular sieve and they were used as catalyst for the liquid phase synthesis of Bisphenol-A from phenol and acetone. For comparison, zeolites ZSM-5, H-Y and dealuminated H-DY have also been tested in this reaction. The CsHPW/MCM system appeared to be the most selective towards p,p′ isomer formation.
72 citations
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TL;DR: In this article, the aldol condensation of acetone was studied over solid base catalysts such as Ca(OH)2, La(OH), ZrO2 and CeO2 in the vapor phase over the temperature range 473-673 K. The reactions were carried out by means of a micropulse reactor, which was directly connected to a GC/MS system.
72 citations
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TL;DR: In this article, the authors developed a system based on the use of the ligninolytic enzyme Manganese Peroxidase (MnP) for the degradation of polycyclic aromatic hydrocarbons (PAHs), of which anthracene was selected as an example.
71 citations