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, synthetic hydrotalcite, Mg6Al2(OH)16CO3·4H2O, and its analogues were synthesized, heat-treated at 773 K, and used as catalysts for the title reaction to form methyl vinyl ketone (MVK) at 673 K.
Abstract: Synthetic hydrotalcite, Mg6Al2(OH)16CO3·4H2O, and its analogues were synthesized, heat-treated at 773 K, and used as catalysts for the title reaction to form methyl vinyl ketone (MVK) at 673 K. MVK was formed over all the catalysts examined, the highest MVK yield (20% on acetone basis) being found over the heat-treated hydrotalcite.
120 citations
TL;DR: In this article, the p-nitrophenylacetonitrile solubility in ethanol, methanol, isopropanol, n-propanol, acetonitriles, acetone, ethyl acetate, toluene and cyclohexane was investigated.
Abstract: The investigation on p-nitrophenylacetonitrile solubility in ethanol, methanol, isopropanol, n-propanol, acetonitrile, acetone, ethyl acetate, toluene, n-butanol, cyclohexane, 2-butanone, isobutano...
120 citations
TL;DR: In this article, the results of an experimental study of five monoterpenes (myrcene, terpinolene, Δ3-carene, α-pinene, and β-pinenes) in the presence of an OH scavenger were presented.
Abstract: The OH- and O3-initiated oxidation of five monoterpenes (myrcene, terpinolene, Δ3-carene, α-pinene, and β-pinene) has been studied in environmental chambers equipped with either a Fourier transform infrared spectrometer or a gas chromatography/flame ionization detector system. The OH-oxidation of myrcene and terpinolene is shown to lead to substantial yields of acetone (36 and 39%, respectively), while the acetone yield from the pinene compounds is quite small (4% and ∼2%, for α- and β-pinene, respectively). Formaldehyde has been identified as a major product (yields of 20–40%) in the OH-initiated oxidation of all five species. Formic acid was also observed in the OH-initiated oxidation of all five monoterpenes, with yields of 2% from β-pinene and 5–9% from the other species studied. The production of acetone from the reaction of monoterpenes with ozone in the presence of an OH scavenger was measured. The yields of acetone for the O3 reactions were α-pinene, 0.03±0.01; β-pinene, 0.009±0.009; Δ3-carene, 0.10±0.015; myrcene, 0.25±0.06; and terpinolene, 0.50±0.06. The mechanism leading to the production of these compounds is discussed, as is the atmospheric relevance of the results. In particular, an estimate of the contribution of monoterpene oxidation to observed atmospheric levels of acetone and formic acid is made.
119 citations
TL;DR: In this article, the complete oxidation of acetone has been studied over a series of manganese oxide catalysts supported on the unpillared and the Al- and Zr-pillared forms of two natural clays of the smectite class (a montmorillonite and a saponite).
Abstract: The complete oxidation of acetone has been studied over a series of manganese oxide catalysts supported on the unpillared and the Al- and Zr-pillared forms of two natural clays of the smectite class (a montmorillonite and a saponite). The temperatures required for total combustion of acetone over the several catalysts ranged from 610 to 660 K at the relatively low W Mn / F in ratio of 0.40 g Mn min mmol acetone −1 used. A significant influence of the clay supports characteristics on the catalytic performance has been found. According to the general behaviour of the various catalysts throughout the light-off tests, the following order of improving catalytic performance can be established with respect to the pillars composition: Al-pillared clays 2 O 3 , MnO 2 , Al 2 O 3 and ZrO 2 , as well as physical mixtures of ZrO 2 with the unpillared clays. The effect on the catalytic performance of the possible competition between the acetone combustion and aldol condensation processes has also been considered.
119 citations
TL;DR: In this article, the acid-rich phase of bio-oil was upgraded via ketonic condensation over weak base catalysts, and the effects of water and three model components (phenol, p-methoxyphenol and frufural) on acid transformation over four CeO2-based catalysts were investigated.
Abstract: In this paper, we proposed a novel method to upgrade the acid-rich phase of bio-oil via ketonic condensation over weak base catalysts. Most acetic acid could be transformed to acetone in model reactions, and CeO2 was proved to be suitable as an active phase for catalyzing this reaction. The effects of water and three model components (phenol, p-methoxyphenol, and frufural) on acid transformation over four CeO2-based catalysts were investigated. As a result, with feeds containing water and phenols with liquid hourly space velocity (LHSV) of 4 cm3 g−1 h−1, this reaction could proceed efficiently and adequately. However, furfural deactivated catalysts significantly, and therefore, furans must be treated before this transformation.
119 citations