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Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 16218

Special Issue Editors


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Guest Editor
1. LCC Laboratoire de Chimie de Coordination, Toulouse, France
2. Department of Chemistry, IUT Paul Sabatier, Castres, France
Interests: coordination chemistry; green chemistry; catalysis; catalysts grafting; DFT calculations; organic solvent-free processes; polyoxometalates; biomass valorization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Molybdenum, vanadium, and tungsten compounds are very interesting and efficient catalysts that are used for a wide range of chemical reactions. The accomplishment of a quite high catalytic activity with relatively low metal loading is a great advantage, generating low-cost and environmentally friendlier processes. Catalysts are used as molecular objects or as supported objects. Catalytic processes containing those elements are of growing interest, notably heterogeneous ones in terms of reuse and recycling.

The Special Issue aims to highlight the recent advances in the development of Mo-, V-, and W-containing catalysts, including coordination complexes, polyoxoanions, metal clusters, or nanoparticles and bulk materials (e.g., mesoporous materials, surfaces, etc.), with the involvement of those elements in the catalytic materials. The emphasis is on the recent trends, including materials processing (synthesis and characterization) with their catalytic applications, from simple reactions with model substrates, to more complex and challenging ones. A mechanistic approach linking the structure with the activity is appreciated.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Assoc. Prof. Dominique Agustin
Assist. Prof. Jana Pisk
Guest Editors

Manuscript Submission Information

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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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • catalysis
  • molybdenum
  • tungsten
  • vanadium
  • polyoxometalates
  • nanoparticles
  • inorganic clusters
  • supported catalysts
  • mesoporous
  • coordination complexes

Published Papers (5 papers)

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Editorial

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3 pages, 203 KiB  
Editorial
Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications
by Dominique Agustin and Jana Pisk
Materials 2022, 15(5), 1720; https://doi.org/10.3390/ma15051720 - 25 Feb 2022
Cited by 1 | Viewed by 1559
Abstract
As chemists, we are still fascinated by the magic of nature [...] Full article

Research

Jump to: Editorial

22 pages, 4583 KiB  
Article
Vanadium-Substituted Phosphomolybdic Acids for the Aerobic Cleavage of Lignin Models—Mechanistic Aspect and Extension to Lignin
by Louay Al-Hussaini, Franck Launay and Elena Galvez
Materials 2020, 13(4), 812; https://doi.org/10.3390/ma13040812 - 11 Feb 2020
Cited by 10 | Viewed by 2939
Abstract
This work deals with the aerobic oxidative cleavage of C-C and C-O bonds catalyzed by the Keggin-type phosphovanadomolybdic acid (H6[PMo9V3O40], noted H6PV3). The latter was synthesized by an adapted hydrothermal procedure [...] Read more.
This work deals with the aerobic oxidative cleavage of C-C and C-O bonds catalyzed by the Keggin-type phosphovanadomolybdic acid (H6[PMo9V3O40], noted H6PV3). The latter was synthesized by an adapted hydrothermal procedure classically used for lower vanadium content and was tested as a catalyst for the aerobic cleavage of 2-phenoxyacetophenone (noted K1HH) and 1-phenyl-2-phenoxyethanol (A1HH) used as two lignin models. The operative conditions (solvent, catalytic loading, etc.) were adjusted on K1HH and extrapolated to A1HH. The cleavage of the alcohol model required more drastic conditions and therefore further optimization. Preliminary attempts on an Organosolv wheat straw lignin were performed too. From the kinetic study, high performance liquid chromatography (HPLC) and gas chromatography–mass spectrometry (GC-MS) data, a mechanism of the cleavage of both models was proposed. Full article
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12 pages, 1960 KiB  
Article
H3PMo12O40 Immobilized on Amine Functionalized SBA-15 as a Catalyst for Aldose Epimerization
by Hui Wang, Meiyin Wang, Jining Shang, Yuanhang Ren, Bin Yue and Heyong He
Materials 2020, 13(3), 507; https://doi.org/10.3390/ma13030507 - 21 Jan 2020
Cited by 4 | Viewed by 2855
Abstract
In this work various amount of phosphomolybdic acid (PMo) were immobilized on amine functionalized SBA-15 and used as heterogeneous catalysts in the epimerization of glucose in aqueous solution. 13.3PMo/NH2-SBA-15 exhibited the best catalytic performance with a glucose conversion of 34.8% and [...] Read more.
In this work various amount of phosphomolybdic acid (PMo) were immobilized on amine functionalized SBA-15 and used as heterogeneous catalysts in the epimerization of glucose in aqueous solution. 13.3PMo/NH2-SBA-15 exhibited the best catalytic performance with a glucose conversion of 34.8% and mannose selectivity of 85.6% within two hours at 120 °C. The activation energy of 80.1 ± 0.1 kJ·mol−1 was lower than that of 96 kJ·mol−1 over the homogeneous H3PMo12O40 catalyst. The catalytic activities of 13.3PMo/NH2-SBA-15 for the transformation of some other aldoses including mannose, arabinose and xylose were also investigated. Full article
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23 pages, 4229 KiB  
Article
Organic Solvent-Free Olefins and Alcohols (ep)oxidation Using Recoverable Catalysts Based on [PM12O40]3− (M = Mo or W) Ionically Grafted on Amino Functionalized Silica Nanobeads
by Yun Wang, Florence Gayet, Pascal Guillo and Dominique Agustin
Materials 2019, 12(20), 3278; https://doi.org/10.3390/ma12203278 - 9 Oct 2019
Cited by 16 | Viewed by 3664
Abstract
Catalyzed organic solvent-free (ep)oxidation were achieved using H3PM12O40 (M = Mo or W) complexes ionically grafted on APTES-functionalized nano-silica beads obtained from straightforward method (APTES = aminopropyltriethoxysilane). Those catalysts have been extensively analyzed through morphological studies (Dynamic Light [...] Read more.
Catalyzed organic solvent-free (ep)oxidation were achieved using H3PM12O40 (M = Mo or W) complexes ionically grafted on APTES-functionalized nano-silica beads obtained from straightforward method (APTES = aminopropyltriethoxysilane). Those catalysts have been extensively analyzed through morphological studies (Dynamic Light Scattering (DLS), TEM) and several spectroscopic qualitative (IR, multinuclear solid-state NMR) and quantitative (1H and 31P solution NMR) methods. Interesting catalytic results were obtained for the epoxidation of cyclooctene, cyclohexene, limonene and oxidation of cyclohexanol with a lower [POM]/olefin ratio. The catalysts were found to be recyclable and reused during three runs with similar catalytic performances. Full article
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16 pages, 2428 KiB  
Article
Ru-Doped Wells–Dawson Polyoxometalate as Efficient Catalyst for Glycerol Hydrogenolysis to Propanediols
by Amalie Modvig, Chiraphat Kumpidet, Anders Riisager and Jakob Albert
Materials 2019, 12(13), 2175; https://doi.org/10.3390/ma12132175 - 6 Jul 2019
Cited by 17 | Viewed by 4486
Abstract
A Ru-doped phospho-tungstic Wells–Dawson polyoxometalate (POM) was successfully applied as homogeneous catalyst for glycerol hydrogenolysis in aqueous media. The synthesized compound showed superior catalytic activity compared to classical homogeneous/heterogeneous Ru catalysts like RuCl3 and Ru/C under identical reaction conditions, whereas the analogous [...] Read more.
A Ru-doped phospho-tungstic Wells–Dawson polyoxometalate (POM) was successfully applied as homogeneous catalyst for glycerol hydrogenolysis in aqueous media. The synthesized compound showed superior catalytic activity compared to classical homogeneous/heterogeneous Ru catalysts like RuCl3 and Ru/C under identical reaction conditions, whereas the analogous POM doped with Pd or Pt proved far less activity. Detailed characterization of the POMs was performed using 31P-NMR to identify characteristic phosphorous peaks of the heteroatoms, infrared spectroscopy (ATR-FTIR) to confirm characteristic P-O and W-O-W vibrations, powder XRD for comparison of crystal structures, and X-ray fluorescence (XRF) and inductive-coupled plasma (ICP) analysis to determine elemental composition. Variation of the reaction parameters for the best performing Ru-doped POM catalyst showed that substrate concentration played an important role for both product selectivity and conversion. Moreover, medium hydrogen pressure and high stirring speed were key factors to obtain highly selective conversion of glycerol to 1,2-propanediol. Full article
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