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Article
Molybdate-Based Catalytic Systems for Aerobic Oxidation of Organic Substrates (A Review)
This review provides an analysis of prior research on the oxidation of organic compounds with oxygen as an oxidant in the presence of transition-metal molybdates. The reaction mechanisms suggested for the oxid...
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Article
Molybdenum-Containing Catalysts Based on Porous Aromatic Frameworks as Catalysts of Oxidation of Sulfur-Containing Compounds
New molybdenum-containing catalysts based on PAF-30 mesoporous carbon material for oxidation of sulfur-containing compounds (SCs) in a model fuel were synthesized. The PAF-30 support was modified with function...
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Article
Oxidative Desulfurization of Straight-Run Naphtha Fraction Using Heterogeneous Catalysts with Two Types of Active Sites
Oxidative desulfurization of straight-run naphtha fraction in the presence of a heterogeneous catalyst containing two active sites was studied. Combination of an acid component and a transition metal ensures h...
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Article
Catalysts Based on Immobilized Ionic Liquids with Brønsted Acid Sites in the Oxidation of Dibenzothiophene
Immobilized ionic liquids with Brønsted acidity containing fragments of nicotinic and phosphomolybdic acids are synthesized by two methods: suspension impregnation and chemical immobilization. The obtained cat...
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Article
In Situ Generated Organic Peroxides in Oxidative Desulfurization of Naphtha Reformate
The paper describes a method developed for the oxidation of organosulfur compounds using organic peroxides generated in situ under the action of atmospheric oxygen on gasoline fraction after reforming. Naphtha...
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Article
Demercaptanization of Light Hydrocarbon Fractions with Strong Aqueous Ammonia without Producing Sulfur Caustic Wastewater
A technology for the demercaptanization of light hydrocarbon fractions and liquefied petroleum gas with 25% aqueous ammonia is proposed. One advantage of this method for the demercaptanization of oil fractions...
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Article
Oxidative Desulfurization of Hydrocarbon Feedstock Using Oxygen as Oxidizing Agent (a Review)
The paper presents a review of scientific research in the field of oxidative desulfurization of petroleum fractions with atmospheric oxygen (as an oxidizing agent) published over the past 15–20 years. A compar...
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Article
Oxidation of Condensed Thiophene Derivatives with Brønsted Acidic Ionic Liquid
Abstract—A catalyst based on ionic liquid consisting of a pyridinium cation having Brønsted acidity and a molybdenum anion (1-butyl-3-carboxypyridinium molybdate) is obtained. Its catalytic activity in the oxidat...
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Article
Desulfurization of Light Distillates by Oxidation and Rectification of Gas Condensate
The possibility that a process comprising the oxidation of sulfur compounds present in gas condensate and its subsequent rectification can be used to desulfurize light petroleum fractions has been explored. Ox...
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Article
Extraction of Mercaptans from Light Hydrocarbon Mixtures with Aqueous Ammonia
Results of laboratory studies of the extraction of light mercaptans (methyl, ethyl, and propyl mercaptans) from hydrocarbons mixtures with a 25% aqueous solution of ammonia (caustic ammonia) are presented and ...
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Article
Catalytic Activity of Polyfunctional Ionic Liquids in Oxidation of Model Sulfur Organic Compounds
Ionic liquids based on 1-methylimidazole were synthesized. The liquids contain Bronsted acid centers in the cation and a transition metal atom in the anion. The polyfunctional ionic liquids synthesized in the ...
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Article
Treatment of Sulfide Alkali Waste Waters from Mercaptans Using Distillation
Processes of methyl and ethyl mercaptan extraction from solutions simulating oil-refinery sulfide alkali waste waters have been studied by distilling argon in the air and atmosphere. In the latter case, the am...
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Article
Peroxide Oxidative Desulfurization of Crude Petroleum
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 r...
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Article
Ozone-assisted oxidative desulfurization of light oil fractions
A catalytic system for oxidative desulfurization has been created, which is a transition metal salt bearing an organic ligand and capable of forming an active oxidative complex in the interaction with ozone an...
