Andrei I. Boronin

Andrei I. Boronin
Boreskov Institute of Catalysis · Heterogeneous Catalysis

Dr.Sci.

About

240
Publications
39,404
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
6,242
Citations
Citations since 2016
57 Research Items
3564 Citations
20162017201820192020202120220100200300400500600
20162017201820192020202120220100200300400500600
20162017201820192020202120220100200300400500600
20162017201820192020202120220100200300400500600
Additional affiliations
September 2014 - present
Novosibirsk State University
Position
  • Head of Laboratory
Description
  • Laboratory of synthesis and physico-chemical investigations of novel composite catalysts
September 1995 - present
Novosibirsk State University
Position
  • Professor (Full)
Description
  • Lecturer of Physical Chemistry
September 1975 - present
Boreskov Institute of Catalysis
Position
  • Leading Scientist, Head of metal-oxide catalyst research group
Description
  • Interest in mechanisms of catalysis
Education
September 1970 - June 1975
Novosibirsk State University
Field of study
  • Chemistry

Publications

Publications (240)
Article
In this work, for the first time, the experimental catalytic kinetics of the CO oxidation reaction on platinum–ceria catalysts was simulated in a wide temperature range –50 - 450°C. On the basis of the experiments performed, a substantiation of the catalytic action of two types of Pt-containing active centers in the form of isolated [Pt²⁺-O4] ions...
Article
Full-text available
The composite nanomaterials based on noble metals, reducible oxides, and nanostructured carbon are considered to be perspective catalysts for many useful reactions. In the present work, multi-walled carbon nanotubes (MWCNTs) were used for the preparation of Pd-Ce-Ox/MWCNTs and Pt-Ce-Ox/MWCNTs catalysts comprising the active components (6wt%Pd, 6wt%...
Article
1%Pd/CeO2-SnO2 catalysts with varying Ce/Sn ratio were synthesized by counter-precipitation followed by calcination in a wide temperature range. The catalysts with Ce/Sn < 3/1 possess high thermal stability after calcination up to 1000 °C while maintaining low-temperature activity in CO oxidation. The PdOx clusters serving as active centers in CO o...
Article
Ternary oxide of silver, copper, and manganese (Ag2CuMnO4) was prepared by hydrothermal synthesis in an alkaline solution. The prepared sample was characterized by a delafossite crystal structure without any other crystallized phases. Catalytic properties of Ag2CuMnO4 in the oxidation reactions using molecular oxygen were investigated. High catalyt...
Article
We studied the kinetic of CO interaction with Pd/CeO2 catalysts during temperature programmed reactions (TPR-CO). Increasing of the calcination temperature leads to the changes of palladium states in the catalysts structure from solid solution to surface clusters and nanoparticles. Kinetic simulation showed that surface clusters are the most active...
Article
Full-text available
Platinum catalysts prepared by incipient wetness impregnation of different supports (TiO2, WO3/TiO2, CeO2, Al2O3, zeolite ZSM-5) are tested in the ammonia oxidation reaction (TPR–NН3+О2) and characterized by a combination of physicochemical (powder XRD, TEM, XPS) and kinetic (TPR–H2, TPD–NH3) techniques. On the surface of all catalysts, platinum is...
Article
Reducing the operating temperature of oxidation catalysts is important for designing energy efficient processes, extending catalyst lifetime, and abating pollutants, especially in cold climates. Herein, high CO oxidation activity at sub-ambient temperatures is reported for Pt/CeO2 catalysts with high content of Pt in the form of dispersed Pt²⁺ and...
Article
The improvement of the low-temperature activity of the supported platinum catalysts in selective ammonia oxidation to nitrogen is still a challenging task. The recent developments in in situ/operando characterization techniques allows to bring new insight into the properties of the systems in correlation with their catalytic activity. In this work,...
Article
Dependence of NH3 oxidation on the state and dispersion of Pt species in Pt/γ‐Al2O3 catalysts was investigated. Prereduced Pt/γ‐Al2O3 catalysts containing Pt0 nanoparticles exhibited significantly higher activity than preoxidized ones with the same Pt dispersion. The most significant improvement of the catalytic activity (TOF increased by 30 times)...
Article
The model RhOx/CeO2 systems were prepared by radio‐frequency (RF) plasma sputtering of Rh electrode in O2 or Ar/O2 atmosphere. Thermal stability of the systems and their reaction probability towards CO oxidation were studied by X‐ray photoelectron spectroscopy. It was shown that the small oxidized Rh nanoparticles on the CeO2 surface (RhOx/CeO2) ob...
Article
Full-text available
A set of physicochemical methods, including X-ray photoelectron spectroscopy (XPS), X-ray diffraction, electron microscopy and X-ray absorption spectroscopy, was applied to study Pt/TiO2 catalysts prepared by impregnation using a commercial TiO2-P25 support and a support produced by pulsed laser ablation in liquid (PLA). The Pt/TiO2-PLA catalysts s...
Article
In this work, the counter precipitation method was used to synthesise Pd/CeO2-SnO2 catalysts, which possess excellent low-temperature activity and high thermal stability. It was revealed that calcination of Pd/CeO2-SnO2 catalysts at 800-1000 °C induces significant growth of catalytic activity in CO oxidation at T<150 °C. This effect of thermal acti...
Article
Copper-cerium nanopowders CuOx–CeO2 (mass ratio Cu:Ce = 6:100) are prepared by mixing the dispersions of the copper and cerium oxides produced by the method of pulse laser ablation (PLA) in liquid, followed by drying. The initial dispersions of copper oxides were prepared by the method of PLA of a metal copper target in distilled water or 1% hydrog...
Article
Pulsed laser ablation (PLA) in liquids is an effective high-energy method for the synthesis of functional nanomaterials. In the present work, a nanocomposite catalyst Pt/Al2O3(PLA) is prepared by mixing solutions of platinum and aluminium nanodispersions obtained by the PLA method in alcohol and water, respectively. After being dried out, the obtai...
Article
In this work, the reaction properties of mixed silver-nickel oxide AgNiO2 were investigated in the reaction of CO oxidation ranging from room temperature up to 350 °C. X-ray photoelectron spectroscopy revealed the presence of a single oxidized silver state and the combination of Ni²⁺ and Ni³⁺ species on the surface of the as-prepared mixed oxide. I...
Article
A new approach for preparing a PtOx/CeO2 catalyst for low‐temperature CO oxidation has been developed. The approach includes; i) preparation of a CeO2 support through the controllable thermal decomposition of Ce(NO3)3·6H2O, and then ii) deposition of polynuclear platinum nitrato complexes ([H3O18‐crown‐6]2[Pt2(μ2‐OH)2(NO3)8][Pt4(μ3‐OH)2(μ2‐OH)4(NO3...
Article
Studying the kinetics of CO oxidation over Pd foil at elevated CO and O2 pressures, we observed an inverse hysteresis: CO conversion was much lower under sample cooling than under foil heating. It was established that under heating the oxidation of metallic palladium to bulk palladium oxide occurred through formation of the palladium surface oxide....
Article
The samples with the CaFe2O4-type crystal structure were obtained by the solid-state reaction method at 1000 °C in the air and the helium atmosphere for the first time. We investigated the modification of the structural and electronic properties of the obtained samples. Mössbauer, XAFS-, XPS-spectroscopies, and dc-, ac-conductivity measurements wer...
Article
Full-text available
The effect of nitrogen doped bamboo-like carbon nanotubes (N–CNTs) on the properties of supported platinum (0.2 and 1 wt %) catalysts in formic acid decomposition for hydrogen production was studied. It was shown that both impregnation and homogeneous precipitation routes led to the formation of electron-deficient platinum stabilized by pyridinic n...
Article
Two series of Pt/γ‐Al 2 O 3 catalysts for low temperature NH 3 oxidation were prepared using Pt(NO 3 ) 4 and H 2 PtCl 6 precursors. Using both precursors results in the formation of small Pt particles (d<1.5 nm), however, Cl‐containing Pt precursors give a higher fraction of highly dispersed Pt species. Such species show high stability against ther...
Article
The results of temperature‐programmed reaction experimental studies and mathematical modeling of self‐sustained oscillations within an inverse temperature hysteresis in CO oxidation over Pd catalyst are presented. The experimental data demonstrate the influence of the reaction medium on the catalyst activity under reaction conditions. Under oxygen...
Conference Paper
In the current work the activity of Pt/Al2O3 and Pt/TiO2 catalysts in the reaction of NH3 oxidation was studied depending on the calcination temperature. A combination of XRD, TEM, XPS and TPR methods was applied in order to analyze the influence of the interaction between active component and support on the catalytic properties of the samples. Cat...
Article
For supported catalysts based on highly-priced noble metals the maximum catalytic efficiency per metal atom is highly desired. In this work, Rh-doped CeO2 systems were studied as potential catalysts for low-temperature NO reduction by CO. Thermal and redox treatments allowed varying the Rh oxidation state and the size of rhodium particles formed on...
Article
Structural transformations in Pd/CeO2 catalysts during their calcination over a wide temperature range (450‐1200 °C) were studied with structural, spectroscopic, and kinetic methods (XRD, TEM, XPS, and TPR). Two synthetic methods were applied: coprecipitation and incipient wetness impregnation. The impregnation synthesis produced the best low‐tempe...
Article
The work is related to the fundamental research of the process of ammonia neutralization using catalytic oxidation over Pt/Al2O3 catalysts in an excess of oxygen. The catalysts are synthesized using nitrate precursors on the supports prepared from Pural SCF-55 aluminum hydroxide by the calcination in air at 550°C or 750°C for 4 h. A number of physi...
Article
Full-text available
We applied a method of plasma arc synthesis to study effects of modification of the fluorite phase of ceria by tin ions. By sputtering active components (Pt, Ce, Sn) together with carbon from a graphite electrode in a helium ambient we prepared samples of complex highly defective composite PtCeC and PtCeSnC oxide particles stabilized in a matrix of...
Article
The Pt–CeO2 nanocomposites were obtained by coprecipitation, varying the Pt loading over a wide range of 1–30 wt %. The samples were calcined in air at 450–1000 °C. The Pt–CeO2 nanocomposites were investigated by a set of structural (XRD, EXAFS, PDF, TEM) and spectroscopic (XPS, Raman) methods. Over the whole range of Pt loading the main species we...
Article
Full-text available
Plasma-arc (PA) sputtering method was applied for synthesis of Pt/CeO2 and Pd/CeO2 nanoparticles. PA represents a joint sputtering of a graphite electrode with various metals (Ce with Pt or Pd). This novel approach allows obtaining highly dispersed metals and ceria on the first stage of synthesis. The thermal treatment of an initial composite in ai...
Article
In this paper, we studied in details the nature of the Ag-CeO2 interaction and its influence on the catalytic activity in CO oxidation at low temperature. Ag/CeO2 catalysts were prepared by pulsed laser ablation in liquids (PLA). This method provided the preparation of highly dispersed particles of both an active component and a support. The initia...
Article
RF-plasma deposition of Pt on a nanosized ceria powder support has been performed directly in photoelectron spectrometer chambers to prepare model catalysts. The plasma deposition in an oxidizing environment results in the formation of highly dispersed oxide nanoparticles up to 2 nm large, which contain platinum solely as Pt⁴⁺ ions revealed by Eb(P...
Article
We studied on the function of Pd species located in mesopores and inside zeolite channels (micropores) of the montmorillonite-modified zeolite catalyst for the hydrodesulfurization of diesel fraction with 350 ppm of sulfur as DBT, 4-MDBT, and 4,6-DMDBT. It was shown that the ex-dihydrogentetrachloropalladate impregnated catalyst as well as the ex-t...
Article
Full-text available
LnZrOx (Ln: La, Sm) mixed oxides of Ln: Zr = 1 were prepared by different methods (complex polymerized method, sorption of cations on starch from aqueous salt solution and conventional co-precipitation with additional redispersion of precipitate by ultra sound) and calcined at 700–1300 °C. Their specific structural features and changes were studied...
Article
A detailed study of mixed silver-copper oxide AgCuO2 was performed using X-ray photoelectron spectroscopy. The state and ratio of elements on the surface at different probing depth was revealed using variable radiation energy. A non-uniform in-depth distribution of silver and copper states was established. Two silver states were detected on the ini...
Article
The pulsed laser ablation (PLA) in alcohol and water media was employed to prepare Pt and CeO₂ PLA-nanoparticles of different sizes and degrees of defectiveness. Interactions of metallic platinum and ceria particles were studied using the thermal activation of Pt-CeO₂ mechanical mixtures in the СО+О₂ reaction medium or O₂ atmosphere. The thermal ac...
Article
Carbon and nitrogen species on the surface of carbon nanotubes (N-CNTs) and nanofibers (N-CNFs) were studied by X-ray absorption (XAS) and photoelectron spectroscopy (PES) including the analysis of nitrogen distribution over the depth of materials. The study was performed with a series of bamboo-like carbon nanotubes and nanofibers having the plate...
Article
The average and the local structure of nanocrystalline Rh-doped CeO2 catalysts, prepared by a co-precipitation method, were studied using a set of structural (PDF, HRTEM, XRD) and spectral (XPS, Raman spectroscopy) methods. The samples with Rh content less than 10wt.%, calcined at 450°C, were homogeneous solid solutions. A comparison of the experim...
Article
In this work, a detailed study of the redox properties of solid solution RhxCe1-xO2-δ in correlation with its catalytic activity in CO oxidation reaction was carried out. The ex situ XPS technique was applied to follow the charging states of the elements on the surface during the redox treatments at a temperature range of 25-450°C. The results were...
Article
The states of components of highly efficient Pt/CeO2 catalysts for low-temperature oxidation of carbon monoxide are studied in detail by X-ray photoelectron spectroscopy (XPS). Using the precise calibration of the spectra relative to the internal standard and the fitting of Ce3d and Pt4f spectra by elementary doublets, we found the features of the...
Article
Similarly to transition metal dichalcogenides akin to MoS2, transition metal polysulfides like tri- and tetrachalcogenide materials are nowadays incorporated into catalysts and composites used for energy conversion and storage, etc. However, polysulfide structures feature SS units, which make them strikingly different from the widely known MoS2 and...
Article
Full-text available
The plasma-arc (PA) method was applied for the highly efficient synthesis of Pd/Ce–Sn–O catalysts for CO oxidation. Using the PA sputtering of a graphite electrode together with Pd, Ce and Sn metallic components in inert atmosphere, a PdCeSnC composite was obtained. After the subsequent calcination in oxygen over the temperature range of 600–1000 °...
Article
Structurally different nitrogen doped nanotubes and nanofibers (N-CNTs and N-CNFs) synthesized by a standard method of decomposing ethylene-ammonia mixtures on metal catalysts were studied. In N-CNTs the uniform distribution of nitrogen and the formation of the ordered defects were registered. The ordered defects comprise four carbon vacancies and...
Article
Catalysts containing platinum (1 and 10 wt.%) or cobalt oxide (10, 50 and 90 wt.%) and nitrogen doped carbon nanofibers (N-СNFs) were synthesized. X-ray photoelectron spectroscopy, CO chemisorption and temperature-programmed reduction methods were used to reveal that pyridine-like nitrogen of N-СNFs is involved in the anchoring of metal or oxide pa...
Article
Semiconductor based CuS-rGO nanocomposite materials have drawn a considerable attention towards photodegradation of organic dye molecules due to the low band gap (∼2.5 eV) of CuS nanoparticles. Presence of reduced graphene oxide (rGO) in CuS-rGO nanocomposite induced synergistic effect between CuS and rGO sheets which led towards better photocataly...
Article
Full-text available
The catalytic properties of copper(II) oxide powders were studied in the CO oxidation reaction using plug flow and flow circulation reactors. Data obtained from different catalytic experiments were in good agreement with each other. The specific catalytic rate (in molecules*cm-2*s-1) was increased by a factor of ca. 4 when the surface area of the C...
Article
A superstructural peak at ∼12° in X-ray diffraction patterns of nitrogen-doped carbon nanotubes compared to the undoped carbon nanotubes was observed and assigned to the formation of spatially ordered defects. The simulation of the N-CNT structure using the graphitic g-C3N4 phase and turbostratic ordering made it possible to propose a new model of...
Article
The growth mechanisms of carbon nanofibers on Ni catalysts and nitrogen-doped carbon nanofibers on Ni and Ni-Cu catalysts were studied. The growth of both types of nanofibers was found to occur by a mechanism that included the formation of surface non-stoichiometric nickel carbide followed by the dissolution and diffusion of carbon, or carbon and n...
Article
Palladium and cerium oxide nanoparticles obtained by pulsed laser ablation (PLA) in liquid (water or ethanol) have been used as nanostructured precursors for synthesis of the composite Pd/CeO2 catalysts. The initial mixture of Pd and CeO2 nanoparticles does not show catalytic activity at temperatures lower than 100°C. It has been found that the com...
Article
Full-text available
Pd/Fe2O3(FeOOH), catalysts were prepared indifferent ways : T – traditional incipient wetness impregnation (IWI) from a solution of palladium nitrate, D – modification of the support surface by dimethylformamide (DMF) prior to IWI, and DF – variant D followed by treatment with a sodium formate solution were examined. These catalysts have been teste...
Article
Mixed silver-copper oxide Ag2Cu2O3 was investigated by a combination of physicochemical techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature programmed reaction (TPR). The catalytic properties of Ag2Cu2O3 in the reaction of CO oxidation were studied by the TPR-CO + O2 method and compared with those...
Article
Platinum-oxide nanoparticles were prepared through the radio-frequency (RF) discharge sputtering of a Pt electrode in an oxygen atmosphere. The structure, particles size, electronic properties, and surface composition of the RF-sputtered particles were studied by using transmission electron microscopy and X-ray photoelectron spectroscopy. The appli...
Article
The catalytic properties of 1 wt % Ru catalysts with the same mean Ru cluster size of 1.4–1.5 nm supported on herringbone-type carbon nanofibers with different N contents were compared for H2 production from formic acid decomposition. The Ru catalyst on the support with 6.8 wt % N gave a 1.5–2 times higher activity for the dehydrogenation reaction...
Article
Full-text available
Low-temperature oxidation of the polycrystalline surface of bulk metallic gold with radio-frequency activated oxygen is used to obtain oxide films, which are investigated by a combination of X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD). The XPS estimate for the composition and thickness of the oxide films is cl...
Article
The paper demonstrates a new technique for preparing nanostructured films of the PdxCe1–xO2–x–δ solid solution. The obtained films are similar to real powder catalysts by their chemical and structural properties and are conductive, which is favorable for the XPS methoda. The effect of the CO+O2 reaction on the oxidized and reduced surfaces is studi...
Article
Highly oxidized gold nanoparticles prepared by RF-discharge under an oxygen atmosphere were studied by X-ray photoelectron spectroscopy and transmission electron microscopy depending on the particle size. A surface-like gold oxide was found in the case of small nanoparticles (1-2 nm) obtained at the first steps of deposition. With an increase of th...