База данных: Статьи
Страница 11, Результатов: 123
Отмеченные записи: 0
101.
Подробнее
35
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
102.
Подробнее
35
Y45
Yermagambet, B. T.
Synthesis of carbon nanofibers based on humic acid and polyacryonitrile by electrospinning method. [Текст] / B. T. Yermagambet // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 103-110
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
carbon nanofiber (CNF) -- humic acid (HA) -- polyacrylonitrile (PAN) -- electrospinning -- oxidation -- formation -- carbonization
Аннотация: The article describes a method for obtaining carbon nanofibers (CNFs) based on humic acid from oxidized coal of the Maikuben basin and polycarlonitrile (PAN) by electrospinning in laboratory conditions.
Держатели документа:
WKU
Доп.точки доступа:
Kazankapova, M.K.
Nauryzbayeva, A.T.
Kassenova, Zh.M.
Y45
Yermagambet, B. T.
Synthesis of carbon nanofibers based on humic acid and polyacryonitrile by electrospinning method. [Текст] / B. T. Yermagambet // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 103-110
Рубрики: chemical Technology
Кл.слова (ненормированные):
carbon nanofiber (CNF) -- humic acid (HA) -- polyacrylonitrile (PAN) -- electrospinning -- oxidation -- formation -- carbonization
Аннотация: The article describes a method for obtaining carbon nanofibers (CNFs) based on humic acid from oxidized coal of the Maikuben basin and polycarlonitrile (PAN) by electrospinning in laboratory conditions.
Держатели документа:
WKU
Доп.точки доступа:
Kazankapova, M.K.
Nauryzbayeva, A.T.
Kassenova, Zh.M.
103.
Подробнее
35
A29
Akurpekova, A. K.
Cracking of vacuum gas oil on hlay -containing catalysts with a multicomponent matrix based on montmorilionite. [Текст] / A. K. Akurpekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 6-13
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
catalytic cracking -- montmorillonite -- binder -- strength -- gasoline -- zeolite -- acidity -- acuum gas oil
Аннотация: it is shown that additions of montmorillonite in the Na form contribute to a significant increase in the crushing strength of granules of cracking catalysts while maintaining their activity in the yield of gasoline. Comparison of the results of the cracking of vacuum gas oil on catalysts of the same composition, but with and without a NaMM binder, showed that the introduction of NaMM does not significantly affect the gasoline yield. Samples of catalysts of the same composition, but with the use of Al-pillared MM in Na-and CaNa-exchangeable forms and with the addition of NaMM as a binder, showed similar activity in the yield of gasoline, which is explained by the similarity of the elemental compositions, textural and acidic properties of the studied catalysts. The maximum yield of gasoline, equal to 44.8% and light gas oil of 14.6%, was obtained for Al (2.5) CaNaHMM + NaMM with the addition of a binder and crushing strength of 60-70 N / cm2.
Держатели документа:
WKU
Доп.точки доступа:
Zakarina, N.A.
Kornaukhova, N.A.
Dalelkhanuly, O.
Zhumadullaev, D.A.
A29
Akurpekova, A. K.
Cracking of vacuum gas oil on hlay -containing catalysts with a multicomponent matrix based on montmorilionite. [Текст] / A. K. Akurpekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 6-13
Рубрики: chemical Technology
Кл.слова (ненормированные):
catalytic cracking -- montmorillonite -- binder -- strength -- gasoline -- zeolite -- acidity -- acuum gas oil
Аннотация: it is shown that additions of montmorillonite in the Na form contribute to a significant increase in the crushing strength of granules of cracking catalysts while maintaining their activity in the yield of gasoline. Comparison of the results of the cracking of vacuum gas oil on catalysts of the same composition, but with and without a NaMM binder, showed that the introduction of NaMM does not significantly affect the gasoline yield. Samples of catalysts of the same composition, but with the use of Al-pillared MM in Na-and CaNa-exchangeable forms and with the addition of NaMM as a binder, showed similar activity in the yield of gasoline, which is explained by the similarity of the elemental compositions, textural and acidic properties of the studied catalysts. The maximum yield of gasoline, equal to 44.8% and light gas oil of 14.6%, was obtained for Al (2.5) CaNaHMM + NaMM with the addition of a binder and crushing strength of 60-70 N / cm2.
Держатели документа:
WKU
Доп.точки доступа:
Zakarina, N.A.
Kornaukhova, N.A.
Dalelkhanuly, O.
Zhumadullaev, D.A.
104.
Подробнее
35
A36
Aliyeva, N. T.
Lubricating compositions for marine , locomotive and stationary diesels based on high -alkaline detergent-dispersant additives. [Текст] / N. T. Aliyeva, A. A. Javadova, K. Q. Efendiyeva, A. K. Mammadova, Z. K. Maharramova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 14-18
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
base oil -- engine oil -- diesel engines -- marine diesels -- locomotive diesel -- stationary diesel -- ubricating composition -- alkaline number -- acid number -- alkylphenol -- ondensation
Аннотация: the article describes new modifications of alkylphenolate type additives synthesized in the ANAS ICA , new lubricating compositions of motor oils M-14 Г2and М-14Г2ЦС (ГОСТ 12337) were created using additives AKİ-150 and AKİ-115B, which are calcium salts of condensation products of methylene bisalkylphenol with formaldehyde, aminoacetic acid and monoethanolamine containingboron and nitrogen with high and medium acid number.
Держатели документа:
WKU
Доп.точки доступа:
Javadova, A.A.
Efendiyeva, K.Q.
Mammadova, A.K.
Maharramova, Z.K.
A36
Aliyeva, N. T.
Lubricating compositions for marine , locomotive and stationary diesels based on high -alkaline detergent-dispersant additives. [Текст] / N. T. Aliyeva, A. A. Javadova, K. Q. Efendiyeva, A. K. Mammadova, Z. K. Maharramova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 14-18
Рубрики: chemical Technology
Кл.слова (ненормированные):
base oil -- engine oil -- diesel engines -- marine diesels -- locomotive diesel -- stationary diesel -- ubricating composition -- alkaline number -- acid number -- alkylphenol -- ondensation
Аннотация: the article describes new modifications of alkylphenolate type additives synthesized in the ANAS ICA , new lubricating compositions of motor oils M-14 Г2and М-14Г2ЦС (ГОСТ 12337) were created using additives AKİ-150 and AKİ-115B, which are calcium salts of condensation products of methylene bisalkylphenol with formaldehyde, aminoacetic acid and monoethanolamine containingboron and nitrogen with high and medium acid number.
Держатели документа:
WKU
Доп.точки доступа:
Javadova, A.A.
Efendiyeva, K.Q.
Mammadova, A.K.
Maharramova, Z.K.
105.
Подробнее
24
Z63
Zhumabek, M.
Ni-Al-Mg-Mn composite catalysts for partial oxidation of natural gas. [Текст] / M. Zhumabek, G. N. Kaumenova, A. Manabayeva, R. O. Sarsenova, S. O. Kotov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 19-26
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
catalytic oxidation -- methane -- synthesis-gas -- nickel -- magnesium
Аннотация: the problem of rational utilization of natural and associated petroleum gases and the cessation of their flaring is one of the acute and unresolved environmental problems. The aim of this work is to develop effective thermally stable catalysts ofa new generation for the processes of oxidative conversion of light alkanes of natural and associated gas into synthesis gas. The results of partial oxidation of the methane of natural gas on the catalysts prepared by solution combustion synthesis are presented. Investigation of the activity of catalysts produced from initial mixture of Ni(NO3)2-Al(NO3)3-Mg(NO3)2-Mn(NO3)2+ urea of different composition was carried out for the production of synthesis-gas. It was found that the optimal conditions for producing of synthesis-gas are: CH4conversion higher than 95%, yield of target products: Н2-97 -99% and СО -40 -43%, Т = 900оС, space velocity –2500 and 6500 h-1. The catalysts were studied by X-ray diffraction, transmission electron microscopy, specific surface area, pore volume and average pore diameter. The presence in the catalysts of simple and mixed oxides, metal aluminates and spinel-type structures, the presence of which contributes to the active work of catalysts for oxidativeconversion of CH4, has been established.
Держатели документа:
WKU
Доп.точки доступа:
Kaumenova, G.N.
Manabayeva, A.
Sarsenova, R.O.
Kotov, S.O.
Z63
Zhumabek, M.
Ni-Al-Mg-Mn composite catalysts for partial oxidation of natural gas. [Текст] / M. Zhumabek, G. N. Kaumenova, A. Manabayeva, R. O. Sarsenova, S. O. Kotov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 19-26
Рубрики: chemistry
Кл.слова (ненормированные):
catalytic oxidation -- methane -- synthesis-gas -- nickel -- magnesium
Аннотация: the problem of rational utilization of natural and associated petroleum gases and the cessation of their flaring is one of the acute and unresolved environmental problems. The aim of this work is to develop effective thermally stable catalysts ofa new generation for the processes of oxidative conversion of light alkanes of natural and associated gas into synthesis gas. The results of partial oxidation of the methane of natural gas on the catalysts prepared by solution combustion synthesis are presented. Investigation of the activity of catalysts produced from initial mixture of Ni(NO3)2-Al(NO3)3-Mg(NO3)2-Mn(NO3)2+ urea of different composition was carried out for the production of synthesis-gas. It was found that the optimal conditions for producing of synthesis-gas are: CH4conversion higher than 95%, yield of target products: Н2-97 -99% and СО -40 -43%, Т = 900оС, space velocity –2500 and 6500 h-1. The catalysts were studied by X-ray diffraction, transmission electron microscopy, specific surface area, pore volume and average pore diameter. The presence in the catalysts of simple and mixed oxides, metal aluminates and spinel-type structures, the presence of which contributes to the active work of catalysts for oxidativeconversion of CH4, has been established.
Держатели документа:
WKU
Доп.точки доступа:
Kaumenova, G.N.
Manabayeva, A.
Sarsenova, R.O.
Kotov, S.O.
106.
Подробнее
24
I-32
Ibrayev, M. K.
Obtaining of water -soluble chelate forms of calcium and magnesium humate. [Текст] / M. K. Ibrayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 27-31
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
calcium and magnesium humates -- chelate comple -- fertilizer -- crop production
Аннотация: this article analyzes the method of obtaining water-soluble chelated forms of calcium and magnesium humates for use as additives in the cultivation of agricultural crops. Humic substances, in turn, are an environmentally friendly, as well as an affordable type of sorbents. In the near future, humic substances are increasingly used in various sectors of agriculture. They are in the form of soluble humates, with progress being used as stabilizers of clay mixtures, which are used in oil drilling, as well as for the production of dyes for wood species. And very promising is the introduction of humic acids in the form of soluble humates in the rural economy as growth stimulants.
Держатели документа:
WKU
Доп.точки доступа:
Issabayeva, M.B.
Tusupova, A.S.
Amanzholova, А.S.
Kuandykova , A.A.
I-32
Ibrayev, M. K.
Obtaining of water -soluble chelate forms of calcium and magnesium humate. [Текст] / M. K. Ibrayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 27-31
Рубрики: chemistry
Кл.слова (ненормированные):
calcium and magnesium humates -- chelate comple -- fertilizer -- crop production
Аннотация: this article analyzes the method of obtaining water-soluble chelated forms of calcium and magnesium humates for use as additives in the cultivation of agricultural crops. Humic substances, in turn, are an environmentally friendly, as well as an affordable type of sorbents. In the near future, humic substances are increasingly used in various sectors of agriculture. They are in the form of soluble humates, with progress being used as stabilizers of clay mixtures, which are used in oil drilling, as well as for the production of dyes for wood species. And very promising is the introduction of humic acids in the form of soluble humates in the rural economy as growth stimulants.
Держатели документа:
WKU
Доп.точки доступа:
Issabayeva, M.B.
Tusupova, A.S.
Amanzholova, А.S.
Kuandykova , A.A.
107.
Подробнее
35
M23
Mammedov, K.
Application of new corrosion inhibitor foroilfield equipment and pipelines for improving the ecological security. [Текст] / K. Mammedov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 32-39
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
environment -- complex reagent -- pipeline -- aggressive environment -- corrosion -- cavitation -- viscosity -- paraffin deposition
Аннотация: n addition, to increase the viscosity reduction efficiency of the obtained reagent, the mechanism of complex application of the cavitation process and the reagent was described based on the positive results of the experiments. Also, the results of tests via "cold finger" method showed that new reagent has 53% efficiency in paraffin deposition inhibiting at its optimal anti-corrosion concentration (500 mg /l).As a result of the conducted field tests, it was revealed that theuse of the new multifunctional reagent ensures the continuous operation of pipeline network and reliable environmental protection.
Держатели документа:
WKU
Доп.точки доступа:
Aliyev , S.
Nurullayev, V.
M23
Mammedov, K.
Application of new corrosion inhibitor foroilfield equipment and pipelines for improving the ecological security. [Текст] / K. Mammedov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 32-39
Рубрики: chemical Technology
Кл.слова (ненормированные):
environment -- complex reagent -- pipeline -- aggressive environment -- corrosion -- cavitation -- viscosity -- paraffin deposition
Аннотация: n addition, to increase the viscosity reduction efficiency of the obtained reagent, the mechanism of complex application of the cavitation process and the reagent was described based on the positive results of the experiments. Also, the results of tests via "cold finger" method showed that new reagent has 53% efficiency in paraffin deposition inhibiting at its optimal anti-corrosion concentration (500 mg /l).As a result of the conducted field tests, it was revealed that theuse of the new multifunctional reagent ensures the continuous operation of pipeline network and reliable environmental protection.
Держатели документа:
WKU
Доп.точки доступа:
Aliyev , S.
Nurullayev, V.
108.
Подробнее
35
M97
Musina, G. N.
Processing of coal tar into petrochemicals and fuel products. [Текст] / G. N. Musina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 40-47
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
coal -- hydrogenation -- peat -- cavitation -- petrochemicals -- fuels -- resin -- phenol
Аннотация: the article summarizes the results of the research. The influence of cavitation-wave action on coal tar, which leads to a change in the rheological properties (density, viscosity), as a result of an increase in the yield of light and medium fractions, is investigated, and the process of catalytic hydrogenation of coal in the presence of a catalytic additive and mine methane is studied.
Держатели документа:
WKU
Доп.точки доступа:
Takibayeva, A.T.
Kulakov, I.V.
Zhorabek, A.A.
Shakhmetova, G.A.
M97
Musina, G. N.
Processing of coal tar into petrochemicals and fuel products. [Текст] / G. N. Musina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 40-47
Рубрики: chemical Technology
Кл.слова (ненормированные):
coal -- hydrogenation -- peat -- cavitation -- petrochemicals -- fuels -- resin -- phenol
Аннотация: the article summarizes the results of the research. The influence of cavitation-wave action on coal tar, which leads to a change in the rheological properties (density, viscosity), as a result of an increase in the yield of light and medium fractions, is investigated, and the process of catalytic hydrogenation of coal in the presence of a catalytic additive and mine methane is studied.
Держатели документа:
WKU
Доп.точки доступа:
Takibayeva, A.T.
Kulakov, I.V.
Zhorabek, A.A.
Shakhmetova, G.A.
109.
Подробнее
28
S53
Sheveleva, Y. A.
Amino and fatty acid composition of datura stramonium L. (Solanaceae). [Текст] / Y. A. Sheveleva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 61-67
ББК 28
Рубрики: Biology
Кл.слова (ненормированные):
amino acid -- fatty acid -- Datura Stramonium -- Datura
Аннотация: This paper examines the quantitative and qualitative composition of amino acids and fatty acids present in the capsules and seeds of Datura Stramonium plant. Plant raw materials were collected in the southernregion of the Republic of Kazakhstan (Almaty region). To determine the qualitative and component composition of fatty acids and amino acids of plant parts, GLC and HPLC methods were used. All analyzes were carried out using a Chromos GC-1000 gas chromatograph with a flame ionization detector and an Agilent-1200 Infinity high-performance liquid chromatograph with a spectrophotometric detector.
Держатели документа:
WKU
Доп.точки доступа:
Litvinenko, Y.A.
Mukhtarova, N.M.
Khutoryanskiy, V.V.
S53
Sheveleva, Y. A.
Amino and fatty acid composition of datura stramonium L. (Solanaceae). [Текст] / Y. A. Sheveleva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 61-67
Рубрики: Biology
Кл.слова (ненормированные):
amino acid -- fatty acid -- Datura Stramonium -- Datura
Аннотация: This paper examines the quantitative and qualitative composition of amino acids and fatty acids present in the capsules and seeds of Datura Stramonium plant. Plant raw materials were collected in the southernregion of the Republic of Kazakhstan (Almaty region). To determine the qualitative and component composition of fatty acids and amino acids of plant parts, GLC and HPLC methods were used. All analyzes were carried out using a Chromos GC-1000 gas chromatograph with a flame ionization detector and an Agilent-1200 Infinity high-performance liquid chromatograph with a spectrophotometric detector.
Держатели документа:
WKU
Доп.точки доступа:
Litvinenko, Y.A.
Mukhtarova, N.M.
Khutoryanskiy, V.V.
110.
Подробнее
24
C51
Chernyakova, R. M.
Sorption of manganese (II) and vanadium (IV) cations by tagan bentonite in an aqueous medium. [Текст] / R. M. Chernyakova, U. Zh. Jussipbekov, G. Sh. Sultanbayeva, R. A. Kaiynbayeva , N. N. Kozhabekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 68-74
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
bentonite -- montmorillonite -- sorption -- desorption -- degree of sorption -- Mn2 +and V4 +cations
Аннотация: the process of sorption of Mn2 +and V4 +cations by bentonite of the Tagan deposit studied depending on various factors (T, oC; τ, min; S: L ratio; CMnand CV, mg/l). It was found that bentonite exhibits sorption properties with respect to the studied cations in a wide range of pH values (from 1 to 10). The highest degree of their sorption is achieved at the consumption of bentonite 1.5 g per 100 mass. p.of metal-containing solution. The influence of the nature of the cation on the sorption capacity of Tagan bentonite was established. The most intense increase in the degree of sorption of manganese (II) occurs in 15 min with an increase in temperature to 35оС.The highest degree of sorption of V4 +cations is achieved in 60 min at 25°C in weakly concentrated vanadium-containing solutions (50 mg/l V4 +). Bentonite from the Tagandeposit exhibits a lower sorption capacity with respect to V4 +cations as compared to Mn2 +cations, which is due to the nature of the cation.
Держатели документа:
WKU
Доп.точки доступа:
Jussipbekov, U.Zh.
Sultanbayeva, G.Sh.
Kaiynbayeva , R.A.
Kozhabekova , N.N.
C51
Chernyakova, R. M.
Sorption of manganese (II) and vanadium (IV) cations by tagan bentonite in an aqueous medium. [Текст] / R. M. Chernyakova, U. Zh. Jussipbekov, G. Sh. Sultanbayeva, R. A. Kaiynbayeva , N. N. Kozhabekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 68-74
Рубрики: chemistry
Кл.слова (ненормированные):
bentonite -- montmorillonite -- sorption -- desorption -- degree of sorption -- Mn2 +and V4 +cations
Аннотация: the process of sorption of Mn2 +and V4 +cations by bentonite of the Tagan deposit studied depending on various factors (T, oC; τ, min; S: L ratio; CMnand CV, mg/l). It was found that bentonite exhibits sorption properties with respect to the studied cations in a wide range of pH values (from 1 to 10). The highest degree of their sorption is achieved at the consumption of bentonite 1.5 g per 100 mass. p.of metal-containing solution. The influence of the nature of the cation on the sorption capacity of Tagan bentonite was established. The most intense increase in the degree of sorption of manganese (II) occurs in 15 min with an increase in temperature to 35оС.The highest degree of sorption of V4 +cations is achieved in 60 min at 25°C in weakly concentrated vanadium-containing solutions (50 mg/l V4 +). Bentonite from the Tagandeposit exhibits a lower sorption capacity with respect to V4 +cations as compared to Mn2 +cations, which is due to the nature of the cation.
Держатели документа:
WKU
Доп.точки доступа:
Jussipbekov, U.Zh.
Sultanbayeva, G.Sh.
Kaiynbayeva , R.A.
Kozhabekova , N.N.
Страница 11, Результатов: 123