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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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Journal ArticleDOI
TL;DR: A cycloaliphatic epoxide functionalized monomer was prepared from partially norbornylized linseed oil (Dilulin®) using three different approaches: peracetic acid, dioxirane, and hydrogen peroxide as mentioned in this paper.
Abstract: A new cycloaliphatic epoxide functionalized monomer was prepared from partially norbornylized linseed oil (Dilulin®). Epoxidation was accomplished using three different approaches: peracetic acid, dioxirane, and hydrogen peroxide. Dioxirane was generated from potassium peroxomonosulfate and acetone. Hydrogen peroxide was used with a quaternary ammonium tetrakis(diperoxotungsto) phosphate(3-) as an epoxidation catalyst. The epoxidation reactions were monitored by FT-IR, and the products were characterized using 1 H, 13 C NMR, FT-IR, FT-Raman, and electrospray ionization (ESI) mass spectroscopy. For all three approaches, the effect of reaction time, temperature, catalyst concentration, and pH was investigated. Out of the three approaches, the hydrogen peroxide epoxidation was preferred on the basis of yield and ease of purification. The kinetic data were obtained only for the hydrogen peroxide approach. The reaction was found to be first-order with respect to the alkene double bond and 1.4th-order with respect to the catalyst.

34 citations

Journal ArticleDOI
TL;DR: In this paper, a high concentration (1.5 × 106 cm−3) TiO2 aerosol of the average particle size 0.5μm was generated by a sonic method inside a 0.1m3 Plexiglas chamber and applied for the adsorptive and adsorsorptive-photocatalytic purification of air from vapors of acetone and chemical agents' model dimethyl methylphosphonate (DMMP).
Abstract: A high concentration (1.5 × 106 cm−3) TiO2 aerosol of the average particle size 0.5 μm was generated by a sonic method inside 0.1 m3 Plexiglas chamber and applied for the adsorptive and adsorptive-photocatalytic purification of air from vapors of acetone and chemical agents’ model dimethyl methylphosphonate (DMMP). The adsorptive capture of acetone over the TiO2 aerosol results in establishing equilibrium adsorption state and is limited by the rate of the aerosol admission into the chamber. A model derived from the Langmuir isotherm describes well the acetone concentration vs. aerosol mass curve and allows obtaining the adsorption constant and monolayer coverage of acetone in a 10 min experiment. The UV irradiation of TiO2 aerosol accelerates dramatically the purification from acetone at the high relative humidity (RH) of the air. Increased RH of air decreases the rate of the acetone adsorption but has a little positive effect on the rate of photocatalytic oxidation of acetone over aerosol particles. The DMMP adsorption over TiO2 aerosol is accompanied by the immediate (τ

34 citations

Journal ArticleDOI
TL;DR: In this article, a practical and efficient protocol for the radical addition of acetone (1) to olefins 2a-d, mediated by potassium permanganate, has been developed.

34 citations

Journal ArticleDOI
TL;DR: In this paper, the state-of-the-art on this reaction using different oxidants with emphasis on H2O2 has been provided by using layered double hydroxides and their derived forms as heterogeneous selective oxidation catalyst.
Abstract: Phenol, an important bulk organic compound, has diverse applications encompassing both industry and society. Commercially, it is produced through energy intensive three-step cumene process operating at relatively low yield with the co-production of acetone. Several attempts were made for producing phenol through challenging one-step direct hydroxylation of benzene using different oxidants like O2, N2O and H2O2. Liquid phase hydroxylation of benzene using H2O2 found to be more attractive due to its low reaction temperature and environmentally friendly nature (as water is only formed as by-product). The hydroxylation reaction occurs through Fenton’s mechanism; however along with phenol several other products are also formed due to higher reactivity of phenol compared to benzene. Our research group has been working on this reaction for nearly a decade using layered double hydroxides (LDHs) and their derived forms as heterogeneous selective oxidation catalyst. Screening of different LDHs having different metal ions in the layers revealed the necessity of copper for hydroxylation in pyridine. Addition of co-bivalent metal ion along with copper was made in an endeavour to improve the activity that revealed the promising results for CuZnAl LDHs. Efforts were then made to shift from pyridine to environmentally benign solvent, water, for this reaction that showed reasonably good yields with very high selectivity of phenol. Addition of small amount of sulfolane as a co-solvent increased the selectivity for phenol further. The reusability difficulty faced while using as-synthesized LDHs was overcome when calcined LDHs were used. Structure–property-activity relationships were deduced to understand the results observed. The present review besides covering our work also provides the state-of-art on this reaction using different oxidants with emphasis on H2O2.

34 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023663
20221,301
2021169
2020193
2019259
2018226