Results 181 to 190 of about 8,448 (204)

Superoxides: Alternative Oxidants for the Oxidative Desulfurization Process

Energy & Fuels, 2008
Superoxides, for instance, potassium superoxide, have been demonstrated as alternative oxidants for the oxidative desulfurization process. For model compounds of benzothiophene, dibenzothiophene, and a number of selected diesel oil samples, sulfur removal greater than 90% and as high as 99% was accomplished.
Ngo Yeung Chan, Ting-Yang Lin, Teh Fu Yen   +2 more
openaire   +1 more source

Deep oxidative desulfurization of liquid fuels

Reviews in Chemical Engineering, 2014
Abstract Increase in energy demand and consumption has been accompanied by a corresponding increase in sulfur emissions. These pollutants have both health and economic consequences. Furthermore, it significantly reduces the efficiency of advanced emission control systems of diesel engines, thereby indirectly causing more harm to the ...
Farouq S. Mjalli, Omar U. Ahmed, Talal Al-Wahaibi, Yahya Al-Wahaibi, Inas M. AlNashef   +4 more
openaire   +1 more source

Desulfurication and Sulfur Oxidation

1977
Brackish water areas such as estuaries and fjords often create favorable conditions for the activity of sulfate-reducing bacteria in the marine environment.
openaire   +1 more source

Smelting Oxidation Desulfurization of Copper Slags

Journal of Iron and Steel Research International, 2012
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags.
Lei Li, Jian-hang Hu, Hua Wang
openaire   +1 more source

Peroxide Oxidative Desulfurization of Crude Petroleum

Petroleum Chemistry, 2017
The oxidative desulfurization of crude petroleum from the Maiorskoe field (Orenburg oblast, Russia) with hydrogen peroxide in the presence of organic and inorganic acids has been studied. A procedure for the recovery of oxidized sulfur-containing compounds from the petroleum by extracting the oxidation products with polar solvents (N,N ...
A. V. Akopyan, R. A. Fedorov, A. V. Anisimov, E. A. Eseva, E. A. Karakhanov   +4 more
openaire   +1 more source

Ultrasound-assisted oxidative desulfurization of bitumen

Japanese Journal of Applied Physics, 2017
Bitumen contains a high percentage of sulfur (about 4.6 wt %). A hydrodesulfurization method is used to remove sulfur from bitumen. The drawback of this method is the requirement for a high temperature of >300 °C. Most of the sulfur in bitumen exists as thiophene.
Wan Mohamad Ikhwan bin Wan Kamal, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara   +3 more
openaire   +1 more source

Oxidative desulfurization of hydrocarbon raw materials

Russian Journal of General Chemistry, 2009
The recent literature data on various methods of oxidative desulfurization of hydrocarbon raw materials, mainly of motor fuels, in homogeneous and heterogeneous conditions has been reviewed.
A. V. Anisimov, A. V. Tarakanova
openaire   +1 more source

Polyoxometalate catalysis for oxidative desulfurization

2016
Oxidative desulfurization removes sulfur-containing molecules from petroleum feedstocks to upgrade the quality of fuels. It is driven by environmental legislation demanding very low sulfur levels in fuels. The oxidative desulfurization technology usually involves oxidation of sulfur-containing molecules with an appropriate oxidant, e.g.
openaire   +1 more source

Experimental Studies on Dimethoate Oxidative Desulfuration

1986
Dimethoate (DM) is biotransformed to an anti-cholinesterase oxoanalogue via liver cytochrome P-450 system. The present investigation deals with a semi-quantitative method for estimating this oxidative desulfuration: DM incubation with liver microsomes and co-factors at optimized concentrations and conditions yields oxo-DM.
Sv. Mitova, L. Vasileva, V. Dobreva, F. Kaloyanova   +3 more
openaire   +1 more source

Oxidative Desulfurization of Çayirhan Lignites by Permanganate Solution

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2008
Abstract Unless important developments record new and renewable energy sources, the role of fossil fuels as an energy resource goes on. It is possible to detect sulfur, heavy metals, and tracer elements such as arsenic and selenium by decreasing calorific value of coals.
Gürü, Metin, Tüzün, Fatma Nihal, Selek Murathan, Ayşe, Asan, Abdurrahman, Kıyak, Tülin   +4 more
openaire   +3 more sources