Special Issue "Synthesis of Nanocomposites and Catalysis Applications"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: 5 February 2021.

Special Issue Editor

Dr. Evgeny Gerasimov
Website
Guest Editor
Boreskov Institute of Catalysis, Novosibirsk, Russia
Interests: Transmission Electron Microscopy (TEM), X-Ray Diffraction, nanostructed catalysts, perovskites, ceramics, oxidation reactions, crystal structure, high temperature reactions, morphotropic phase transitions

Special Issue Information

Dear Colleagues,

Catalytic technologies are required in various industries: in the chemical and food industries, energy, wood processing, and pharmaceuticals. Catalysts are involved in 70–80% of all chemical processes. The global catalyst market size was estimated at USD 25.0 billion in 2018 and continues to grow. In the United States and Europe, the catalyst market is growing due to the introduction of new rules and regulations governing the level of pollution in industry. Enterprises are forced to invest in the catalytic industry in order to meet new environmental standards.

To create new approaches in the synthesis of catalysts, it is necessary to understand, in greater detail, the structure of effective centers, methods of regeneration, how to increase thermal stability, etc. One of the possibilities to significantly improve the characteristics of catalytic systems is to reduce the size of their components. The growing interest in nanostructured systems stimulated a significant surge in the activity of studying their structure, which does not come down to the atomic structure of a single nanoparticle or crystalline block. The most important characteristics affecting the physical and chemical properties of nanocomposites are the size, shape of the nanoparticles, their mutual orientation, etc.

This Special Issue of Nanomaterials “Synthesis of Nanocomposites and Catalysis Applications” will focus not only on the features of nanocomposite synthesis but also on methods for the characterization of material structure, the relationship between chemical structure and catalytic properties, and possible avenues for catalyst regeneration or decomposition.

Dr. Evgeny Yu. Gerasimov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanocomposites
  • advanced synthesis
  • catalysts
  • material characterization
  • decomposition
  • regeneration

Published Papers (2 papers)

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Research

Open AccessArticle
Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming
Nanomaterials 2020, 10(7), 1281; https://doi.org/10.3390/nano10071281 (registering DOI) - 30 Jun 2020
Abstract
Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria-zirconia solid [...] Read more.
Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria-zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single-phased. XRD data, Raman, and UV-Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors. Full article
(This article belongs to the Special Issue Synthesis of Nanocomposites and Catalysis Applications)
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Open AccessArticle
CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed
Nanomaterials 2020, 10(5), 1002; https://doi.org/10.3390/nano10051002 - 24 May 2020
Abstract
A method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H2, low-temperature nitrogen adsorption, crushing strength) and tested in the oxidation [...] Read more.
A method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H2, low-temperature nitrogen adsorption, crushing strength) and tested in the oxidation of CO and burning of brown coal in a fluidized bed. It was found that the catalysts have high mechanical strength (16.2 MPa), and their catalytic properties in the oxidation of CO are comparable to the characteristics of industrial Cr-containing catalysts. It was shown that the addition of pseudoboehmite at the stage of drop formation contributes to the production of uniform spherical high-strength granules and facilitates the stabilization of the phase state of the active component. The use of CuFeAl nanocomposite catalysts for the burning of brown coal provides a low emission of CO (600 ppm) and NOx (220 ppm) and a high degree of coal burnout (95%), which are close to those of the industrial Cr-containing catalysts (emission of CO is 700 ppm, NOx—230 ppm, and degree of coal burnout is 95%). Full article
(This article belongs to the Special Issue Synthesis of Nanocomposites and Catalysis Applications)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Structural insight in La0.5Ca0.5Mn0.5Co0.5O3 decomposition in methane combustion process
Authors: Evgeny Gerasimov; Olga Nikolaeva
Affiliation: BIC SB RAN
Abstract: Perovskite-like solid solution La0.5Ca0.5Mn0.5Co0.5O3 was tested in the methane combustion reaction. During the reaction, there is a noticeable decrease in methane conversion, the rate of catalyst deactivation increases with the temperature rising. The in situ XRD method shows that the observed deactivation occurs as a result of the segregation of calcite and cobalt oxide particles on the perovskite surface. According to the TGA, the observed drop in catalytic activity is also associated with a large loss of oxygen from the perovskite structure.

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