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  1. No Access

    Article

    Mesoporous Silica Gel Doped with Dysprosium, Lanthanum and Modified with Silver as a Catalyst for Selective Hydrogenation of a 1-Heptyne/1-Heptene Mixture

    Mesoporous silica gel doped with dysprosium, lanthanum and modified with silver (Dy-Ag/MPS, La-Ag/MPS) was obtained by the template method. The physicochemical characteristics of the obtained catalyst were stu...

    A. A. Tokranov, E. O. Tokranova, R. V. Shafigulin, L. V. Pavlova… in Catalysis Letters (2024)

  2. No Access

    Article

    Subcritical Water Extracts of Japanese Kelp as a Potential Base for Functional Nutrition

    The efficiency of extracting iodine and alginic acids from dry thalli of Japanese kelp (Saccharina japonica) with subcritical water at 130, 150, and 170°C in the dynamic extraction mode is determined. It is found...

    L. V. Pavlova, I. A. Platonov, G. A. Pushkarev in Russian Journal of Physical Chemistry B (2023)

  3. No Access

    Article

    Distribution and Structure of the Ice Complex of the Lena Delta Area

    The study of distribution and cryogenic structure of the Ice Complex is necessary for identification of its genesis. The intermediate results of the Ice Complex exposures surveys in the Lena Delta area are pre...

    I. A. Platonov, M. N. Grigoriev in Water Resources (2023)

  4. No Access

    Article

    The Formation of Dispersed Systems from Aqueous Extracts from Milk Thistle Fruits

    The regularities of the formation of dispersed systems (DSs) from the extracts from milk thistle after extraction with water at 150, 200, and 250°C and 5 MPa in the dynamic mode are studied. The sizes of the p...

    L. V. Pavlova, I. A. Platonov, E. A. Novikova in Russian Journal of Physical Chemistry B (2021)

  5. No Access

    Article

    Catalytic Activity of the Autoclave Thermolysis Products of [Co(NH3)5Cl][PtCl4] in the Complete Oxidation of Propane and Their Morphology and Phase Composition

    The catalytic phases containing highly dispersed platinum metal particles on large particles of mixed cobalt oxide were obtained from the binary complex [Co(NH3)5Cl][PtCl4] under hydrothermal conditions. The chem...

    E. N. Tupikova, I. A. Platonov, O. S. Bondareva, D. S. Khabarova in Kinetics and Catalysis (2021)

  6. No Access

    Article

    Investigation of Sorption Microsystems as Reference Samples of Volatile Organic Compounds

    The technology of obtaining reference samples of volatile organic compounds using sorption microsystems is described. The most effective are 0.147–0.178 mm (80–100 mesh) polymer sorbents fractions, which provi...

    I. A. Platonov, I. N. Kolesnichenko, E. A. Novikova… in Measurement Techniques (2019)

  7. No Access

    Article

    Hydrothermal Synthesis of Platinum–Chromium Oxidation Catalysts on Metal Supports

    Catalysts containing highly dispersed platinum metal particles in a matrix of chromium oxides with different degrees of oxidation on metallic supports were obtained using the hydrothermal decomposition reactio...

    E. N. Tupikova, I. A. Platonov, D. S. Khabarova in Kinetics and Catalysis (2019)

  8. No Access

    Article

    Evaluation of the Extraction Efficiency of Biologically Active Compounds from Chamomile Flowers (Chamomilla recutita R.) Grown in the Samara Region by Extractants in the Subcritical State

    Extracts of biologically active compounds (BACs) from chamomile flowers grown in the Samara region produced by extraction with subcritical water, as well as aqueous ethanol solutions of various concentrations ...

    L. V. Pavlova, I. A. Platonov, V. A. Kurkin… in Russian Journal of Physical Chemistry B (2018)

  9. No Access

    Article

    Methods and Devices for the Preparation of Standard Gas Mixtures

    A review of methods for the preparation of standard gas mixtures (SGMs) with the known concentrations of organic and inorganic gases and vapors is presented. The classification of methods is proposed and their...

    I. A. Platonov, O. V. Rodinkov, A. R. Gorbacheva… in Journal of Analytical Chemistry (2018)

  10. No Access

    Article

    Extraction of Biologically Active Compounds from Eucalyptus (Eucalypti viminalis Labill) Leaves by Subcritical Water and Water-Ethanol Mixtures

    Extraction of biologically active compounds (BAC) from eucalyptus viminalis (Eucalypti viminalis Labill) leaves with subcritical water was conducted using a dynamic regime at temperatures of 120–200°C and pressur...

    L. V. Pavlova, I. A. Platonov, N. V. Nikitchenko… in Russian Journal of Physical Chemistry B (2017)

  11. No Access

    Article

    Preparation of Calibration Gas Mixtures by the Chromato-Desorption Method for Increasing the Accuracy of Quantitative Determination of Biogenic Pentane in Expired Air

    The possibility of increasing the accuracy of preparing n-pentane calibration gas mixtures by using injection-type chromato-desorption microsystems is investigated. The possibility of obtaining calibration gas...

    I. A. Platonov, I. N. Kolesnichenko, E. A. Novikova… in Measurement Techniques (2017)

  12. No Access

    Article

    Determination of Arbutin in Vaccinium vitis-idaea L. Leaves

    A reversed-phase HPLC method for quantitative determination of arbutin in leaves of cowberry (Vaccinium vitis-idaea L.) was developed. The optimal conditions for extracting arbutin from the plant raw material wer...

    V. A. Kurkin, T. K. Ryazanova, I. A. Platonov… in Pharmaceutical Chemistry Journal (2017)

  13. No Access

    Article

    Chromatographic-Desorption Method for Preparing Calibration Gas Mixtures of Volatile Organic Compounds

    This is a study of the feasibility of using chromatographic-desorption systems for preparing calibration gas mixtures containing microscopic amounts of volatile impurities of saturated, aromatic, and halogenco...

    I. A. Platonov, I. N. Kolesnichenko, P. K. Lange in Measurement Techniques (2017)

  14. No Access

    Article

    Planar microchromatographic columns for gas chromatography

    The adsorption and selective properties of aluminum-based planar microcolumns filled with the Carbopack B adsorbent are studied. The effect of geometrical parameters of the columns on their chromatographic pro...

    I. A. Platonov, V. I. Platonov, Yu. I. Arutyunov in Journal of Analytical Chemistry (2016)

  15. No Access

    Article

    Evaluation of the efficiency of volatile organic compounds extraction from eucalyptus viminalis (Eucalypti viminalis Labill) using subcritical extractants

    Bioactive compounds were extracted from Eucalyptus viminalis with subcritical water in the temperature range of 120–200°C under a pressure of 5 MPa, as well as with aqueous solutions of ethanol with different con...

    L. V. Pavlova, I. A. Platonov, N. V. Nikitchenko… in Russian Journal of Physical Chemistry B (2015)

  16. No Access

    Article

    Stationary phases deposition on the planar columns capillaries

    One of the modern trends of chromatography is the miniaturization of the analytical equipment. A successful way to carry out miniaturization is to use planar technologies based on methods developed for the cre...

    V. N. Sidel’nikov, O. A. Nikolaeva… in Protection of Metals and Physical Chemistr… (2015)

  17. No Access

    Article

    A gas chromatograph based on planar systems

    A chromatographic system consisting of a microinjector with the volume of sampling loop 10 µL, a microchromatographic column with nanodisperse silica particles on a planar aluminum plate, and a catalytic combu...

    I. A. Platonov, V. I. Platonov, M. G. Goryunov in Journal of Analytical Chemistry (2015)

  18. No Access

    Article

    The Dynamic Characteristics of a Thermal Conductivity Microdetector for Gas Analyzers

    The dynamic characteristics of micro- and standard thermal conductivity detectors and flame-ionization detectors are compared. The dynamic characteristics are estimated from the time constant. It is shown that...

    I. A. Platonov, P. K. Lange, I. N. Kolesnichenko, V. I. Platonov in Measurement Techniques (2015)

  19. No Access

    Article

    Improved approach towards synthesis of adamantane-1,3,5-triol

    1-Adamantanol can be converted into adamantane-1,3,5-triol in the presence of N-hydroxylphthtalimide, cobalt(II) acetylacetonate, and manganese dioxide under oxygen atmosphere in glacial acetic acid.

    E. A. Ivleva, I. A. Platonov, Yu. N. Klimochkin in Russian Journal of General Chemistry (2015)

  20. No Access

    Article

    Extraction of biologically active compounds from medicinal plant raw material by extractants in subcritical state

    Extraction of biologically active compounds (BACs) from the medicinal-plant raw material “leaves of eucalyptus viminalis” (Eucalypti viminalis Labill) was performed by traditional methods, by sub-critical water a...

    I. A. Platonov, L. V. Pavlova… in Protection of Metals and Physical Chemistr… (2014)

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