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, it has been shown that zeolite catalysts exhibit high activity in the formation of the acetone ketal of glucose in a flow system with the quantitative selectivity for the 1,2-product.
Abstract: The ketalization of polyols (glycerol, xylitol, xylose) in the presence of a number of heterogeneous acid catalysts has been studied. It has been shown that zeolite catalysts exhibit high activity in the formation of the acetone ketal of glucose in a flow system with the quantitative selectivity for the 1,2-product. The best catalyst is zeolite beta; in the presence of this zeolite and excess acetone, the yield is over 90% or, in the case of the structured reactor, even greater than 98% It has been shown that zeolite-based systems catalyze the formation of ketals of xylitol and xylose with a yield of up to 50% in the presence of excess acetone.
67 citations
67 citations
TL;DR: In this paper, the transformation of ethanol to acetone was studied on promoted iron oxide catalysts, and the catalysts were characterized by X-ray and BET surface area measurements.
67 citations
TL;DR: In this article, a packed-bed dielectric barrier discharge (DBD) was developed for acetone removal, and the effects of packing materials were investigated in terms of discharge characteristics, removal efficiency and byproducts formation.
67 citations
TL;DR: In this article, a Fourier transform infrared attenuated total reflectance spectroscopy (FTIR-TRS) was used for the measurement of water and water mixtures covering the whole solubility range.
Abstract: Acetone and water mixtures covering the whole solubility range were measured by Fourier transform infrared attenuated total reflectance spectroscopy. In this system, only water can supply the hydrogen atoms necessary for hydrogen bonding. Using spectral windowing with factor analysis (FA), 10 principal factors were retrieved, five water and five acetone. Hydrogen bonding is observed on the carbonyl stretch band as water is introduced in the solution, redshifting the band further from its gas position than that observed in pure liquid acetone. This indicates that the hydrogen bonding is stronger than the acetone dipole–dipole interactions because it overrides them. A water molecule isolated in acetone is twice H bonded through its two H atoms; although both OH groups are H-bond donors, the OH stretch band is less redshifted (∼138 cm−1) than that of pure liquid water (∼401 cm−1). This is attributable to the two lone electron pairs remaining on the oxygen atom that sustain a large part of the OH valence bond...
67 citations