V.G. Matveeva

Publications (8)15.6 Total impact

• Article: Nanosized Pt-, Ru-, and Pd-containing catalysts for organic synthesis and solution of environmental issues

  V. G. Matveeva, P. M. Valetsky, M. G. Sulman, L. M. Bronstein, A. I. Sidorov, V. Yu. Doluda, A. V. Gavrilenko, L. Zh. Nikoshvili, A. V. Bykov, M. V. Grigorjev, E. M. Sulman
  [show abstract] [hide abstract]
  ABSTRACT: Synthesis of Pt-, Ru-, and Pd-containing nanoparticles in the pores of polymeric matrix of hypercrosslinked polystyrene, their structure and catalytic properties are under consideration. Physicochemical studies have shown that metal nanoparticle formation depends on the properties of the polymeric matrix porous structure, the nature of metal precursors and the synthesis conditions. The study of catalytic properties of metal nanoparticles stabilized in mesoporous matrices showed promising applications of these systems in the reactions of selective oxidation and hydrogenation, which are intermediate stages in the synthesis of precursors of vitamins and medicines. In order to solve environmental problems, nanocatalysts were investigated in the processes of oxidative degradation of phenol and reductive denitrification of nitrates for purification of sewage and natural water. Keywordsnanocatalysts–organic synthesis–ecology–hypercrosslinked polystyrene–Pt–Ru–Pd–oxidative degradation of phenols–catalytic oxidation of glucose–catalytic oxidation of phenol
  Catalysis in Industry 05/2012; 3(3):260-270.
• Article: Nanostructured metallopolymer catalysts in fine organic synthesis

  V. G. Matveeva, M. G. Sulman, L. M. Bronstein, P. M. Valetsky, E. M. Sulman
  [show abstract] [hide abstract]
  ABSTRACT: The article presents results of the synthesis of the nanocatalysts formed in the nanostructured polymeric environment and their properties. These nanocatalysts were analyzed in the reactions of selective hydrogenation and oxidation, which are the basic stages of synthesis of vitamins and aromatic compounds. The amphiphilic block copolymer micelles, ultrathin layers of polyelectrolytes and the nanopores of hypercrosslinked polymers were used as nanostructured polymeric matrices. The formation and properties of both mono- (Pd, Pt) and bimetallic (PdPt, PdAu, PdZn) nanoparticles stabilized by polymers were considered. The efficiency of nanocatalysts in combination with the high stability makes them easy to produce and promising for industrial application.
  Catalysis in Industry 04/2012; 2(1):11-19.
• Article: Nanosized catalysts in fine organic synthesis as a basis for developing innovative technologies in the pharmaceutical industry

  P. M. Valetsky, M. G. Sulman, L. M. Bronstein, E. M. Sulman, A. I. Sidorov, V. G. Matveeva
  [show abstract] [hide abstract]
  ABSTRACT: This investigation of the catalytic properties of noble metal nanoparticles stabilized in hypercrosslinked polystyrene (HPS) matrix shows the prospect for their application in regioselective oxidation region- and enantioselective hydrogenation, which represent key stages for the synthesis of the intermediates and final products of pharmaceutical industry. Commercial use of nanosized catalysts allows shortening the synthetic stages, increasing product yields, and improving the environmental safety of the existing industrial processes. In this review, the synthesis, structure and catalytic properties of mono- (Pt, Ru, Pd), bi- (Pt-Pd, Pt-Ru, Pd-Ru), and trimetallic (Pt-Pd-Ru) nanoparticles stabilized in the pores of a polymeric HPS matrix are discussed. Physicochemical investigations have shown that the formation of metal-containing nanoparticles depends on the properties of the porous polymeric structure, the nature of the initial metal precursor, and the synthesis conditions. The use of nanosized catalysts is revealed to be effective in the most important field of fine organic synthesis: preparation of materials for medicine, vitamins, and food additives (e.g., in the food and pharmaceutical industry).
  Nanotechnologies in Russia 04/2012; 4(9):647-664.
• Article: Nanosized catalysts as a basis for intensifications of technologies

  E.M. Sulman, P.M. Valetsky, M.G. Sulman, L.M. Bronstein, A.I. Sidorov, V.Yu. Doluda, V.G. Matveeva
  [show abstract] [hide abstract]
  ABSTRACT: This investigation of the catalytic properties of noble metal nanoparticles stabilized in hyper crosslinked polystyrene (HPS) matrix shows the prospect for their application in selective hydrogenation, selective oxidation and enantioselective hydrogenation, which represent key stages for the synthesis of the intermediates and final products of pharmaceutical industry. Commercial use of nanosized catalysts allows shortening the synthetic stages, increasing product yields, and improving the environmental safety of the existing industrial processes. In this review, the synthesis, structure and catalytic properties of mono (Pt, Ru, Pd), bi (Pt–Pd, Pt–Ru, Pd–Ru), and trimetallic (Pt–Pd–Ru) nanoparticles stabilized in the pores of a polymeric HPS matrix are discussed. Physicochemical investigations have shown that the formation of metalcontaining nanoparticles depends on the properties of the porous polymeric structure, the nature of the initial metal precursor, and the synthesis conditions. The use of nanosized catalysts is revealed to be effective in the most important field of fine organic synthesis: preparation of materials for medicine, vitamins, and food additives (e.g. in food and pharmaceutical industries).
  Chemical Engineering and Processing: Process Intensification. 01/2011; 50:1041-1053.
• Article: Kinetics of phenol hydrogenation over Pd-containing hypercrosslinked polystyrene

  E.M. Sulman, A.A. Ivanov, V.S. Chernyavsky, M.G. Sulman, A.I. Bykov, А.I. Sidorov, V.Yu. Doluda, V.G. Matveeva, L.M. Bronstein, B.D. Stein, A.S. Kharitonov
  [show abstract] [hide abstract]
  ABSTRACT: Hypercrosslinked polystyrene (HPS) has been used as a support for preparation of the palladium-based catalyst, Pd/HPS, for gas phase hydrogenation of phenol to cyclohexanone. At the phenol conversion 99%, the catalyst provides selectivity for ketone not lower than 95 mol%. The Pd/HPS catalyst showed high stability, retaining its catalytic performance at least for 20 days. Kinetics was used to compare Pd/HPS with the commercial Pd/Al2O3 catalyst. The catalytic efficiency was assessed using the derived dimensionless kinetic equation without a ‘time’ parameter. Three major reaction routes with their rate parameters and activation energies were revealed. From kinetic parameters, the maximum possible yield of cyclohexanone in the temperature range of 120–180 °C was determined. The important feature of the Pd/HPS catalyst is that selectivity is independent of the temperature at a certain phenol conversion. At elevated temperatures (160–180 °C), the selectivity is at least 2–3% higher as compared to the commercial catalyst Pd/Al2O3, which makes Pd/HPS largely promising for industrial applications.
  Chemical Engineering Journal. 01/2011; 176–177:33-41.
• Article: Kinetics of phenol oxidation over hypercrosslinked polystyrene impregnated with Pt nanoparticles

  V.Yu. Doluda, E.M. Sulman, V.G. Matveeva, M.G. Sulman, N.V. Lakina, A.I. Sidorov, P.M. Valetsky, L.M. Bronstein
  [show abstract] [hide abstract]
  ABSTRACT: Liqiud-phase catalytic wet-air oxidation (CWAO) of phenolic compounds is one of the most prospective methods of waste water purification at high concentrations of toxic phenolic compounds. In this work the synthesis and catalytic properties of mixed platinum-containing nanoparticles stabilized in polymeric matrix of hypercrosslinked polystyrene are discussed. The size of platinum nanoparticles was determined by transmission electron microscopy. Proposed catalytic system showed the high activity, selectivity and stability in the phenol CWAO. The optimal conditions of phenol oxidation leading to the selectivity of 98–99% at 99% conversion were determined and the kinetics of the process at various catalyst loadings, substrate concentrations, and temperatures was studied. Mathematical modelling of the process was carried out allowing the calculation of the reaction network model.
  Chemical Engineering Journal 01/2007; 134(1-3):256-261. · 3.46 Impact Factor
• Article: Platinum-containing hyper-cross-linked polystyrene as a modifier-free selective catalyst for L-sorbose oxidation.

  S N Sidorov, I V Volkov, V A Davankov, M P Tsyurupa, P M Valetsky, L M Bronstein, R Karlinsey, J W Zwanziger, V G Matveeva, E M Sulman, N V Lakina, E A Wilder, R J Spontak
  [show abstract] [hide abstract]
  ABSTRACT: Impregnation of hyper-cross-linked polystyrene (HPS) with tetrahydrofuran (THF) or methanol (ML) solutions containing platinic acid results in the formation of Pt(II) complexes within the nanocavities of HPS. Subsequent reduction of the complexes by H2 yields stable Pt nanoparticles with a mean diameter of 1.3 nm in THF and 1.4 nm in ML. The highest selectivity (98% at 100% conversion) measured during the catalytic oxidation of L-sorbose in water is obtained with the HPS-Pt-THF complex prior to H2 reduction. During an induction period of about 100 min, L-sorbose conversion is negligible while catalytic species develop in situ. The structure of the catalyst isolated after the induction period is analyzed by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. Electron micrographs reveal a broad distribution of Pt nanoparticles, 71% of which measure less than or equal to 2.0 nm in diameter. These nanoparticles are most likely responsible for the high catalytic activity and selectivity observed. The formation of nanoparticles measuring up to 5.9 nm in diameter is attributed to the facilitated intercavity transport and aggregation of smaller nanoparticles in swollen HPS. The catalytic properties of these novel Pt nanoparticles are highly robust, remaining stable even after 15 repeated uses.
  Journal of the American Chemical Society 11/2001; 123(43):10502-10. · 9.91 Impact Factor
• Article: Surface characteristics of block copolymer solutions and reaction mixture components as key elements to understanding of the behavior of block copolymer based hydrogenation catalyst

  V.G. Matveeva, E.M. Sulman, S.H. Anastasiadis, M. Vamvakaki, G.N. Demidenko, L. Zh. Nikoshvili, P.M. Valetsky, L.M. Bronstein
  [show abstract] [hide abstract]
  ABSTRACT: This work is devoted to the investigation of surface characteristics such as contact angle and surface tension of the poly(ethylene oxide)-block-poly(2-vinyl pyridine) (PEO-b-P2VP) block copolymer solutions. The block copolymer was used for the development of micellar and heterogenized selective Pd-containing hydrogenation catalysts. Besides, surface tension of solutions of a reactant (dehydrolinalool) and a product (linalool) were investigated as a function of solvent nature and composition. It was found that varying the solvent polarity allows tuning the access of the reactant to catalytic sites and the removal of the product from the micelle core. The surface tension measurements were in accordance with the results of the catalytic investigation. Among the investigated solvents the iso-propanol plus water mixture (30 vol.% of H2O) was found to provide the best catalytic properties, although such a complex solvent revealed higher surface tension than pure iso-propanol. In the case of heterogenized catalyst, a scheme of the block copolymer interaction with the SiO2 surface was proposed.
  Colloids and Surfaces A Physicochemical and Engineering Aspects 383:102-108. · 2.24 Impact Factor