In this work, the synthesis of magnetite nanoparticles and catalysts based on it stabilized with silicon aluminum oxides was carried out. It is revealed that stabilization surface by using leads to a decrease in size nanocrystals nanocomposites (particle diameter less than ~10 nm). The catalytic activity obtained evaluated during oxidation reaction phenol, pyrocatechin cresol oxygen. well known phenolic compounds are among most dangerous water pollutants. effect phenol concentration...

The purpose of this work was to create magnetic nanocatalysts that could be used for the oxidation organic water pollutants – phenol and its derivatives determine physicochemical characteristics catalysts. development such active nanocomposite catalysts would solve environmental problem in Republic Kazakhstan field wastewater treatment from impurities, including phenols, also contribute subsequent creation domestic production oxygen-containing compounds, since almost entire spectrum...

The development of new catalytic systems based on cobalt and iron compounds for the production oxygen-containing is an urgent task chemical technology. purpose this work synthesis CoFe2O4 stabilized with polyvinylpyrrolidone (PVP), study catalyst by physico-chemical research methods, determination effectiveness CoFe2O4/PVP in phenol oxidation reaction. In work, magnetic composites were synthesized co-deposition. A comparison characteristics properties (II) ferrite (CoFe2O4) composite...

Currently, the problem of creating effective technologies and highly active stable catalysts for complete purification or post-treatment industrial wastewater from phenols is one most urgent difficult to solve.Phenols contained in are called "phenolic wastewater".Phenol pollutants, toxic animals humans, destructive many microorganisms.Deep catalytic oxidation substances methods natural impurities phenol-containing compounds.Among modern systems field fine organic synthesis solving...

The article describes the study of regularities oxidative cracking vacuum gas oils Atyrau and Zhetybay oil on composite catalysts based natural zeolite Taizhuzgen Narynkol clay.During synthesized zeolite-containing catalysts, an increase in coke formation is observed comparison with inert atmosphere.These data indicate a magnification catalytic destruction high molecular weight hydrocarbons presence traces air.The influence fractional composition processed feedstock laws process was...

This study aimed to prepare catalysts on the base of Kazakhstan raw materials and test them in oxidative catalytic cracking fuel oils.It was determined influence air route reactions establish relationship between parameters degree conversion high molecular weight hydrocarbons light products.It found that additives contribute a deeper degradation starting material.According IR spectra, gasoline carried out without catalyst contains sulfur compounds bound oxygen atom (927-1,007 cm -1 ) carbon...

The development and improvement of methods for the synthesis environmentally friendly catalysts based on base metals is currently an urgent promising task modern catalysis. Catalysts nanoscale magnetite maghemite have fast adsorption-desorption kinetics high chemical activity. purpose this work was to obtain magnetic composites, determine their physicochemical characteristics verify activity in process liquid-phase oxidation phenol with oxygen. Magnetic nanocomposites were obtained by...

The development and improvement of methods for the synthesis environmentally friendly catalysts based on base metals is currently an urgent promising task modern catalysis. Catalysts nanoscale magnetite maghemite have fast adsorption–desorption kinetics high chemical activity. purpose this work to obtain magnetic composites, determine their physicochemical characteristics verify activity in process liquid-phase oxidation phenol with oxygen. Magnetic nanocomposites were obtained by...

Water pollution is one of the main causes imbalance in Earth's ecosystem.Plant effluents have different compositions and concentrations pollutants, depending on kind production water supply sewerage system.The sources phenol-containing wastewater are coking plants, coke oven gas semi-coking generating stations, wood heat treatment synthesis artificial liquid fuels.They can also be result activities metallurgical oil refineries, enterprises for recovery rubber, film, phenolphthalein,...

The results of synthesis and researches hybrid gumic-magnetic composites are presented in the article. possibility regulation quantitative speciation (containing Fe) is established at variation proportions Fe (II), (III)/HA way reagents injection a reaction mixture. designing sorbents on basis humic acids chemically connected particles iron oxides as magnetic-active components for fixation extraction heavy metals ions radionuclides from natural objects by means magnetic separation shown....

The development of technologies for processing oil residues is relevant and promising Kazakhstan, since the main reserves hydrocarbons in country are heavy oils. This paper describes study influence technological modes on yield hydrocarbon composition products formed because cracking commercial fuel M-100 presence air reactor. For catalysts preparation, natural Taizhuzgen zeolite Narynkol clay were used. It was found that introduction into reaction zone, which oxygen initiator process,...

The composition and structure of the microspheric alumosilicates Central Heating Power Plants (CHРP) ashes is studied with help modern physical-chemical methods (XRD, scanning electronic microscopy, BET, elemental chemical analysis). microspheres activity in reaction Na2SO3 oxidation by oxygen kinetic potentiometric methods. By means EPR Möessbauer spectroscopy it established that iron enter into cenospheres two states Fe3+ Fe2+, thus, field content 3-4 wt. % (3+) form single ions an...

It is known that highly efficient catalysts for the catalytic oxidation of aromatic hydrocarbons can be obtained based on magnetic nanoparticles. The development nanosized magnetically controlled with oxygen deserves especially close attention in territory Republic Kazakhstan, which does not have its own industrial production oxygen-containing compounds. aim this work to create Fe and Co nanoparticles stabilized polymers: polyvinylpyrrolidone, chitosan, polyethylenimine, study them by...

The present study is aimed at creating catalytic systems based on magnetite (Fe3O4) stabilized by polymers (polyvinylpyrrolidone (PVP) and chitosan), for liquid-phase oxidation of organic compounds with gaseous oxygen in order to obtain oxygen-containing that can be used the production dyes, synthetic fibers, drugs, many other petrochemical products. Magnetic composites Fe3O4 PVP chitosan were synthesized coprecipitation method. prepared magnetic studied physicochemical analysis methods. It...

In this study, hollow microspheres based on fly ash from the Ekibastuz coal field (Kazakhstan) and natural zeolite Taizhuzgen were used for synthesis of catalysts.The catalysts tested in process sulfur dioxide oxidation with different SO2 content SO2-Ar gas mixture at a flow vortex plant "Emulsifier" type capacity 2 m 3 / h.Technology oxygen an aqueous solution has been developed best technological parameters selective production sulfuric acid as product have determined.The degree sorption...

The composition and structure of the microspheric aluminosilicates Combined Heating Power Plants (CHРP) ashes is studied with help modern physical-chemical methods (XRD, scanning electron microscopy, BET, elemental chemical analysis). activity microsphere-based catalysts for reaction Na2SO3 oxidation by oxygen also kinetic potentiometric methods. By means EPR Möessbauer spectroscopy it concluded that iron ions into cenospheres exist in two states – Fe3+ Fe2+, thus, (III) form solitary an...

The results of methanol oxidation to formaldehyde at the presence iron-molybdenum catalyst fixed on silicate matrix are introduced for first time. elaborated is stable through time and does not depend content input in learnt interval temperatures (270-400oC). СН 2 О output fluctuates from 94.8 98.2% selectivity 97.3 100%.

Water pollution by organic and inorganic compounds, heavy metals, dyes, radioactive pharmaceutical compounds has a significant impact on its use. Globalization, structural changes, economic development around the world-all this contributes to release of pollutants that cause water pollution. That is why wastewater treatment recovery, removing from wastewater, one most important issues. This literature review examines problems pollution, sources types found in water, also discusses...

The paper describes the catalytic cracking of heavy petroleum feedstock on catalysts based natural Taizhuzgen zeolite and Narynkol clay (Kazakhstan). Catalytic was studied fuel oil M-100 brand taken from LLP Pavlodar Oil Chemistry Refinery Air added into reaction medium. It found that under optimal conditions, conversion residue reaches 46.2%, when initial oil, yield middle distillate fraction is 85.7 wt. % due to content 41.1 residual light gas in resulting products. composite catalyst...