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.

Cation-dipole interactions in clay organic complexes

Abstract: Quantitative gas chromatographic analyses supplemented by X-ray diffraction studies of the adsorption of ethanol and acetone (as model polar organic compounds) on homoionic montmorillonite revealed marked variation in the number of molecules associated with each exchange cation. The results show increasing association in the order K+

Pulse- and X-radiolysis of 2-mercaptoethanol in Aqueous Solution

Abstract: SummaryAqueous solutions of 2-mercaptoethanol have been irradiated with pulses of 4 MeV electrons and with 240 kVp x-rays. The specific rate-constants for reactions of hydroxyl radicals, hydrated electrons and hydrogen atoms with the thiol were found to be 6·5 × 109, 1·2 × 1010 and 2 × 109 M−1 sec−1, respectively. Reaction products have been identified by gas chromatography and functional group analysis as hydrogen peroxide, hydrogen sulphide, acetaldehyde, ethanol and dithiodiglycol. Yields were determined quantitatively by spectrophotometric means after the addition, where necessary, of suitable reagents. Radical scavengers such as acetone have been used to isolate effects due to the various primary species. In the absence of oxygen, dithiodiglycol was formed with G up to 5 while hydrogen peroxide was formed in very small yield. In oxygenated solutions, dithiodiglycol and hydrogen peroxide were formed in equal yields with G values up to about 30, while hydrogen sulphide and ethanol had yields up to G ∼ ...

Aldol condensation of furfural and acetone on layered double hydroxides

Abstract: The Aldol condensation of furfural (Fur) with acetone (Ac) to 4-(2-Furyl)-3-buten-2-one (FAc) is one of the most important processes in the aqueous-reforming of oxygen-containing biomass derivatives and has been carried out in the presence of solid-base catalysts, calcined-rehydrated Layered Double Hydroxides (LDH). The Mg-Al Layered Double Hydroxides has been prepared by the coprecipitation, calcination and regeneration from mixed oxides by rehydration. The catalyst prepared with different Mg/Al molar ratios showed different catalytic performance and the best catalyst was with the Mg/Al molar ratio of 2.5. Phenol adsorption showed that the best catalyst had the largest numbers of accessible basic sites. The appropriate rehydration temperature and time for mixed oxides obtained by calcination were also investigated. The Mg-Al LDH catalysts can be regenerated by calcination at 773 K and rehydration in decarbonate water, but the regeneration is complex and incomplete. In addition, the catalyst calcined at high temperature also had activity, which was attributed to the formation of the Mg-Al spinels.