Special Issue "Catalytic Applications of Clay Minerals and Hydrotalcites"

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: 15 April 2020.

Special Issue Editors

Guest Editor
Dr. Juan Antonio Cecilia Website E-Mail
Departamento de Química Inorgánica, Cristalografía y Mineralogía, Spain
Interests: heterogeneous catalysis; biomass valorization; heterogeneous catalysis; porous materials; clay minerals; adsorption processes
Guest Editor
Dr. Carmen Pilar Jiménez Gómez Website E-Mail
Department of Inorganic Chemistry, Crystallography and Mineralogy University of Málaga, Spain
Interests: characterization; hydrotalcites; clay minerals; catalysis; biomass valorization

Special Issue Information

Dear Colleagues,

Clay minerals are inexpensive and available materials with a wide range of applications (adsorbent, ion exchanger, support, catalyst, paper coating, ceramic, and pharmaceutical, among others). Clay minerals could be easily modified through acid/basic treatment, through the insertion of bulky ions or pillars in the interlayer spacing, as well as through acid treatment, improving their physicochemical properties.

Considering their low cost and high availability, clay minerals display a relatively high specific surface area in such a way that they have a great potential to be used as catalytic supports, since they can disperse expensive active phases as noble metals on the porous structure of their surface. In addition, the low cost of these supports allows their implementation on an industrial scale more easily than other supports, which are only feasible for the laboratory scale.

Hydrotalcites (considered as anionic or basic clays) are also inexpensive materials with a great potential to be used as catalysts, since their textural properties could also be modified easily through the insertion of anions in their interlayer spacing. In the same way, these hydrotalcites, formed by layered double hydroxides, can lead to their respective mixed oxides after thermal treatment. These mixed oxides are considered basic catalysts with a high surface area, so they can also be used as catalytic support.

Taking into account the great potential of clay minerals and hydrotalcites, the editors think that the catalytic applications of both materials are worthy of a Special Issue in the journal Catalysts.

Dr. Juan Antonio Cecilia
Dr. Carmen Pilar Jiménez Gómez
Guest Editors

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. Catalysts 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 1600 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

  • Caracterization
  • Clay mineral
  • Hydrotalcites
  • Mixed oxides
  • Catalytic support
  • Heterogeneous catalysis

Published Papers (1 paper)

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Research

Open AccessArticle
Hierarchical PtIn/Mg(Al)O Derived from Reconstructed PtIn-hydrotalcite-like Compounds for Highly Efficient Propane Dehydrogenation
Catalysts 2019, 9(9), 767; https://doi.org/10.3390/catal9090767 - 12 Sep 2019
Abstract
The challenges facing propane dehydrogenation are to solve the Pt sintering and carbon deposition. This paper provides a new way to disperse and stabilize Pt species and resist carbon deposition. Highly dispersed Pt species were topologically transformed from reconstructed PtIn-hydrotalcite-like precursors in a [...] Read more.
The challenges facing propane dehydrogenation are to solve the Pt sintering and carbon deposition. This paper provides a new way to disperse and stabilize Pt species and resist carbon deposition. Highly dispersed Pt species were topologically transformed from reconstructed PtIn-hydrotalcite-like precursors in a flower-like hierarchical microstructure. The lattice confinement of reconstructed hydrotalcite-like precursor is in favor of stabilizing the highly dispersed Pt species, and the hierarchical microstructure is an important factor to prolong its lifetime by enhancing tolerance to carbon deposition. In propane dehydrogenation, the propene selectivity decreases in the sequences of catalyst in flower-like > single-plate > block mass with small, flakeys. A propene selectivity of >97% with a conversion of 48% at 600 °C has been achieved over a flower-like PtIn/Mg(Al)O catalyst. Additionally, no visible Pt sintering can even be observed on this catalyst after a reaction time of 190 h. This strategy provides an effective and feasible alternative for the facile preparation of highly dispersed metal catalysts. Full article
(This article belongs to the Special Issue Catalytic Applications of Clay Minerals and Hydrotalcites)
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