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 authors investigated the effect of external diffusion on the adsorption and desorption of two typical oxygenated VOCs on silica gel by using the Langmuir-Freundlich model and showed that the final ratio of adsorbed acetone to ethyl acetate is dependent on the adorption bed height.
34 citations
TL;DR: In this article, flame spray-made La2O3-doped SnO2 nanoparticles with 0.1−2µwt% La contents were systematically studied for acetone detection.
Abstract: In the present work, flame-spray-made La2O3-doped SnO2 nanoparticles with 0.1−2 wt% La contents were systematically studied for acetone detection. The particle and sensing film properties were characterized by X-ray diffraction, nitrogen adsorption, electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The sensing films were tested towards 0.1–400 ppm acetone at operating temperatures ranging from 150 to 400 °C in dry air. Gas-sensing results demonstrated that the SnO2 sensing film with the optimal La content of 0.5 wt% exhibited a very high response of 3626 toward 400 ppm acetone with a short response time of 2.8 s at the optimal operating temperature of 350 °C. Moreover, the sensors displayed high acetone selectivity against SO2, H2S, NO2, C6H6, C7H8, C8H10 and CH2O. Therefore, the La2O3-doped SnO2 sensors are promising for sensitive and selective detections of acetone at low concentrations.
34 citations
TL;DR: The lipase catalysed synthesis ofxylose caproate ester was performed by condensation of xylose, an aldopentose and caproic acid in organic solvents by using a dual-solvent system containing DMSO and acetone.
Abstract: The lipase catalysed synthesis of xylose caproate ester was performed by condensation of xylose, an aldopentose and caproic acid in organic solvents. A dual-solvent system containing DMSO and acetone (1:10 v/v) was used to determine the optimal conditions for the reaction. Different reaction parameters (solvent system, reaction time, substrate molar ratio and the amount of enzyme loaded) were studied. The highest conversion rate (64%) was obtained within 24 h with the optimal conditions of 16% (w/v) Novozym 435 and a molar ratio of xylose to caproic acid of 1:4.
34 citations
TL;DR: In this paper, Shengli lignite (SL) was subjected to sequential extraction (SE) with carbon disulfide, benzene, methanol, acetone, and tetrahydrofuran under ultrasonication to afford extracts 1−5, respectively, and the residue (R SE, i.e., residue from SE).
34 citations
TL;DR: Aldol condensation of furfural with acetone (molar ratio 1:10) was carried out in a flow fixed bed setup at 50°C using calcined hydrotalcite with Mg/Al of 3 as a catalyst as discussed by the authors.
34 citations