Oxidation of Alkylaromatics

Rao, T. S. S.; Awasthi, Shubhra

doi:10.1155/2007/185364

Cited by 16 publications

(7 citation statements)

References 49 publications

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“…The main products of oxidation of di-and poly-alkylbenzenes are generated via a hydroperoxide pathway which goes on to produce aryl alcohols and aryl aldehydes and ketones. These can go on to be oxidised to the corresponding aryl acid [26]. Detailed GCMS analysis of the aromatics post oxidation in the PetroOxy supports at least the first part of this proposal, however no acids were found in any of the post PetroOxy samples.…”

Section: Resultsmentioning

confidence: 61%

“…It has been shown that the isopropyl group of p-cymene is oxidised in preference to the methyl group and that oxidation of an alkyl benzene normally produces the corresponding carbonyl compound via a hydroperoxide formed at the alpha position on the aromatic ring [26,31]. The reactivity of the alpha-methynic hydrogen for cymene has been compared to that of toluene at ratio of 4.1:1 at 85°C [32], albeit metal-catalysed.…”

Section: P-cymene Blending -Induction Timesmentioning

confidence: 99%

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The oxidative stability of synthetic fuels and fuel blends with monoaromatic blending components

Rawson

Stansfield

Webster

et al. 2015

Fuel

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Section: Resultsmentioning

confidence: 61%

Section: P-cymene Blending -Induction Timesmentioning

confidence: 99%

The oxidative stability of synthetic fuels and fuel blends with monoaromatic blending components

Rawson

Stansfield

Webster

et al. 2015

Fuel

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“…In a neutral medium at high temperatures, as already mentioned, the process proceeds by a radical mechanism. Studies based on individual hydrocarbons , show that primary hydroperoxides mainly decompose to form acids; secondaryalcohols, ketones, acids, and hydrocarbons; tertiaryalcohols (phenols) and acetone.…”

Section: Resultsmentioning

confidence: 99%

Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

et al. 2022

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The noncatalytic oxidative desulfurization process of straight-run kerosene and diesel fractions with high sulfur contents due to their treatment with air without using expensive catalysts and strong oxidants is considered. The research was carried out in a periodic mode in a bubble-type reactor with a volume of 1 × 10 –3 m 3 under the following conditions: 180–200 °C; 2.5–3.0 MPa; the process lasted for 20–30 min; the air/raw material ratio was 1.6–2.2 m 3 /min per 1 m 3 of raw material. The process can be used to obtain industrial jet fuels and diesel fuel components with good lubricating properties. The possibility and expediency of carrying out the process in the presence of water have been studied. The ratio of water/raw materials (vol.) varied from 0:1 to 2:1. It was proven that the water presence in the reaction medium has a positive effect on the studied process and decreases the oxidation intensity of hydrocarbon medium by 2–4 times. This is due to both the slowing of oxidation reactions by water during peroxide decomposition and chain growth and branching and the partial change in chemical oxidation with the formation of phenols and/or tertiary alcohols, which are inhibitors of oxidation reactions. On the other hand, water has almost no effect on the removal degree of sulfur compounds.

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“…According to [17] CdSe nanoparticles modified with benzoic acid interact with xylene (toluene) from causing a change of their optical properties. In our electrolyte, a strong oxidizing medium was created in which impurities of an aromatic carboxylic acid, isomers of the toluic acid [34] and its radicals (toluic aldehyde and xylene hydroperoxide) [35,36] are formed due to the presence of hydrochloric and nitric acids and the temperature of 95°C. Toluic acid as well as benzoic acid is a substance which interacts with the surface of the nanoparticles via the carboxyl groups to form micellar structures.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical synthesis and optical properties of ultra-fine CdSe nanoparticles

et al. 2016

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Colloidal solutions (*0.3 mol/L) of CdSe nanoparticles in xylene have been synthesized by the electrochemical method from an acid electrolyte based on HNO 3 ? HCl (2:1) mixture using extraction into xylene. It has been found that CdSe nanoparticles of small size (2-5 nm) synthesized on the cathode are readily extractable in xylene, whereas nanoparticles of larger size (20-100 nm) remain in the aqueous electrolyte and dissolve in the nitric-hydrochloric acids mixture. An X-ray phase analysis of powders of 2-5 nm CdSe nanoparticles showed them have a mixed cubic/hexagonal crystal structure. It has been found from measurements of absorption and photoluminescence spectra that the CdSe nanoparticles of this structure have a broad photoluminescence band (k max = 500 nm) at a narrow absorption peak (k max = 420 nm), which may be due to stacking fault formation in nanoparticles of mixed cubic/hexagonal structure. Using this electrolyte with a xylene surface layer under continuous electrolysis conditions and extraction of 2-5 nm CdSe nanoparticles with a content of up to 0.05 g in 1 cm 3 xylene (*0.3 mol/L) was obtained. Such colloidal solution can be used to obtain optical nanocomposites by incorporation CdSe nanoparticles into a liquidcrystalline cadmium caprylate matrix. The spectral characteristics such of composites have been studied by adsorption spectroscopy and fluorescence.

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Oxidation of Alkylaromatics

Cited by 16 publications

References 49 publications

The oxidative stability of synthetic fuels and fuel blends with monoaromatic blending components

The oxidative stability of synthetic fuels and fuel blends with monoaromatic blending components

Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

Electrochemical synthesis and optical properties of ultra-fine CdSe nanoparticles

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