Skip to main content

759 Result(s)

within D. F. ** Remove this filter Chemistry Remove this filter

previous disabled Page of 38
and

  1. No Access

    Article

    Application of Energy-Dispersive X-ray Spectroscopy to Quantify the Chemical Composition of Igneous Rocks

    The possibility of using energy-dispersive X-ray spectroscopy for quantification of the chemical composition of igneous rocks without their transfer into solution has been considered. Statistical processing of...

    E. N. Pechenkina, V. A. Krenev, S. V. Fomichev… in Russian Journal of Inorganic Chemistry (2024)

  2. No Access

    Article

    Salts of Organic Acids as Reducing Agents in Atom Transfer Controlled Radical Polymerization

    Novel catalytic systems based on complexes of copper(II) bromide with polydentate nitrogen-containing ligands, tris[(2-pyridyl)methyl]amine and tris[(2-dimethylamino)ethyl]amine, and salts of organic acids (Ro...

    I. D. Grishin, O. S. Gulyaeva, Yu. A. Kuznetsova, E. I. Zueva… in Polymer Science, Series B (2024)

  3. No Access

    Article

    Well-defined poly(stearyl methacrylate-co-glycidyl methacrylate) obtained by ATRP as a complex additive for hydrotreated diesel fuel

    In the present work reversible-deactivation radical copolymerization of stearyl methacrylate with glycidyl methacrylate via atom transfer radical polymerization mechanism was conducted using CuBr/tris(2-pyridy...

    D. F. Grishin, I. P. Kriulichev, M. V. Pavlovskaya, I. D. Grishin in Chemical Papers (2024)

  4. No Access

    Article

    Hydrate-Anion Complex of Proton [H(H2O)n]+А− as the Basis of the Complex Acidity Function Н0w of Aqueous Solutions of Strong Mineral Acids in Excess of Water

    Based on the concept of the proton hydrate-anion complex [H(H2O)n]+A−, equations are proposed that characterize the catalytic activity of the proton in aqueous solutions of three acids: sulfuric, hydrochloric, an...

    S. N. Ivanov, V. A. Kozlov, T. E. Nikiforova… in Russian Journal of General Chemistry (2023)

  5. No Access

    Article

    Effect of Hydrodynamic Conditions During Coking on the Structure of the Resulting Coke

    The production of a highly anisotropic structure of needle cokes depends not only on the quality of the feedstock but also on the hydrodynamic situation in the coke chamber formed as a result of shear stresses...

    V. P. Zaporin, D. F. Osipenko, S. V. Sukhov in Chemistry and Technology of Fuels and Oils (2023)

  6. No Access

    Article

    Selection of a Delayed Coking Technology at Predesign Initial Data Development Stage

    Technological schemes of delayed coking plants currently operated in oil refineries are compared. It is shown that the new-generation Russian technology is superior to licensed technologies of foreign firms in...

    V. P. Zaporin, S. V. Sukhov, I. A. Shadrin… in Chemistry and Technology of Fuels and Oils (2023)

  7. No Access

    Article

    Cathodic protection of UNS S31600 with Al A96061 alloy sacrificial anodes for molten quaternary amine transportation

    This paper examines the occurrence of lacy pitting corrosion and the implementation of cathodic protection during the transportation of a quaternary ammonium salt on the surface of stainless steel UNS S31600 a...

    D. F. Llache, L. Gozález-Rameño… in Journal of Solid State Electrochemistry (2023)

  8. No Access

    Article

    Basalt of Kanzafarova Open Pit Mine: Raw Material for Production of Mineral Fiber

    The chemical composition of rocks from the Kanzafarova open pit mine is determined by inductively coupled plasma atomic emission spectroscopy; their petrochemical properties are estimated. On the basis of the ...

    E. N. Pechenkina, E. I. Berbekova… in Theoretical Foundations of Chemical Engine… (2023)

  9. No Access

    Article

    Analysis of Chemical Deposition in the Ca(OH)2–H3PO4–H2O System

    The possibility of regulating the structure and morphology of precipitates forming in the CaO–P2O5–H2O system in the low concentration region during neutralization of acidic solutions with lime milk is studied. T...

    I. A. Pochitalkina, Yu. A. Bessolova… in Theoretical Foundations of Chemical Engine… (2023)

  10. No Access

    Article

    Phase Equilibria in Water–Salt Systems Containing Sodium and Calcium Chlorides and Urea at Temperatures below 0°C

    Phase equilibria are studied in sections of the systems NaCl–CO(NH2)2–H2O, CaCl2–CO(NH2)2–H2O, and NaCl–CaCl2–CO(NH2)2–H2O at temperatures from 0 to –57°C. The features of the mutual influence of the components o...

    E. A. Frolova, D. F. Kondakov, V. P. Danilov in Theoretical Foundations of Chemical Engine… (2023)

  11. No Access

    Article

    Stratiform Anorthosite Associations of Differentiated Basitic Massifs in Russia. Part 1. Deposits and Mineral Composition

    The data on the main (Arsent’evskii, Orongoiskii, Kizirskii, Chineiskii, Patynskii, and Kharlovskii) massifs of stratiform anorthosite deposits in Russia and their location data are given. The problems of clas...

    V. A. Krenev, S. V. Fomichev, D. F. Kondakov… in Theoretical Foundations of Chemical Engine… (2023)

  12. No Access

    Article

    Stratiform Anorthosite Associations of Differentiated Basitic Massifs in Russia. Part 2. Genesis

    Data on the crystallization of the basic magma and its intrachamber and intrapocket (deep-seated) differentiations are given. Problems of the genesis of stratiform anorthosites are considered.

    V. A. Krenev, S. V. Fomichev, D. F. Kondakov… in Theoretical Foundations of Chemical Engine… (2023)

  13. No Access

    Article

    Development of Effective Depressor Additives to Diesel Fuel, Based on Copolymers of Stearyl Methacrylate with Monomers of Various Structures

    Depressor additives based on stearyl methacrylate homopolymer and its copolymers with various monomers (butyl methacrylate, methacrylic acid esters of С10–С14 fraction, maleic anhydride) were synthesized in the p...

    E. V. Kolyakina, M. V. Pavlovskaya, Yu. S. Pronina… in Russian Journal of Applied Chemistry (2023)

  14. No Access

    Article

    Phase Equilibria in the Sodium Formate–Glycerol–Water System at Temperatures Below 0°С

    Phase equilibria in sections of the sodium formate–glycerol–water system at temperatures of 0 to –47°C are studied by visual polythermal analysis. The ratio of sodium formate and glycerol in the sections is va...

    E. A. Frolova, D. F. Kondakov… in Theoretical Foundations of Chemical Engine… (2023)

  15. No Access

    Article

    Study of the Effect of Urea on the Corrosivity of Sodium and Calcium Chlorides to Steel and Aluminum Alloys

    Corrosivity to steel and aluminum alloys on the example of St3, D16T, and D16AT is studied for solutions containing sodium and calcium chlorides in a weight ratio of 3 : 1, and urea in a ratio of 10 to 90% to ...

    E. A. Efimova, L. I. Avdyushkina… in Theoretical Foundations of Chemical Engine… (2023)

  16. No Access

    Article

    Physicochemical Modeling of Melting and Crystallization Processes of Latite and Trachyte

    Using computer physicochemical modeling methods, we determine the mineral compositions of igneous rocks corresponding to latite and trachyte, medium volcanic rocks of the subalkaline series 53 ≤ SiO2 ≤ 64.5 ≤ (Na

    E. N. Pechenkina, E. I. Berbekova… in Theoretical Foundations of Chemical Engine… (2023)

  17. No Access

    Article

    Unique Properties of Novel Binary P(Py-co-OT)/MFe2O4 (M = Ni, Cu, and Co) Nanocomposites for Renewable Energy Storage Applications

    In this work, novel nanocomposites (NCs) were fabricated via in situ-chemical oxidative polymerization process. For the purpose of examining their physical and chemical properties, the synthesized samples were...

    J. Koaib, D. F. Katowah, A. Timoumi… in Journal of Inorganic and Organometallic Po… (2023)

  18. No Access

    Article

    Neutral Red and Safranin Т in the Photopolymerization of Methyl Methacrylate and Other (Meth)Acrylate Monomers

    Features of the polymerization of methyl methacrylate and a number of other (meth)acrylate monomers in the presence of catalytic systems based on phenazine dyes (Neutral Red and Safranin Т) under visible light...

    O. S. Lizyakina, L. B. Vaganova, D. F. Grishin in Polymer Science, Series B (2023)

  19. No Access

    Article

    Production of Magnesium Carbonate and Magnesium Oxide from Brines of the Volgogradskoe Bischofite Deposit

    A sample of the natural brine of the Volgogradskoe bischofite deposit is subjected to chemical analysis to determine the concentrations of macro- and microcomponents: magnesium, chlorine, potassium, lithium, b...

    V. P. Danilov, V. B. Baranovskaya… in Theoretical Foundations of Chemical Engine… (2023)

  20. No Access

    Article

    Features of Methyl Methacrylate Polymerization Mediated by Methylene Blue and Ethyl 2-Bromoisobutyrate under Photoirradiation Conditions

    Using methyl methacrylate polymerization as an example, the features of polymer synthesis in the presence of the catalytic system [methylene blue + ethyl 2-bromoisobutyrate] at room temperature under visible l...

    O. S. Lizyakina, L. B. Vaganova, D. F. Grishin in Polymer Science, Series B (2023)

previous disabled Page of 38