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

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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 15462

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Special Issue Editors

Dr. Dominique Agustin

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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

Dr. Jana Pisk

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Guest Editor

Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb 10000, Croatia
Interests: coordination chemistry; advanced (bio)materials; polyoxometalates; molecular and supported catalysts; homogenous catalysis; heterogeneous catalysis; (ep)oxidations
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

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 submissions that pass pre-check are 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. 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

Open AccessEditorial

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

by Dominique Agustin and Jana Pisk

Materials 2022, 15(5), 1720; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15051720 - 25 Feb 2022

Cited by 1 | Viewed by 1460

Abstract

As chemists, we are still fascinated by the magic of nature [...] Full article

(This article belongs to the Special Issue Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications)

Research

Jump to: Editorial

22 pages, 4583 KiB

Open AccessFeature PaperArticle

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://0-doi-org.brum.beds.ac.uk/10.3390/ma13040812 - 11 Feb 2020

Cited by 10 | Viewed by 2783

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 classically used for lower vanadium content and was tested as a catalyst for the aerobic cleavage of 2-phenoxyacetophenone (noted K1_HH) and 1-phenyl-2-phenoxyethanol (A1_HH) used as two lignin models. The operative conditions (solvent, catalytic loading, etc.) were adjusted on K1_HH and extrapolated to A1_HH. 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

(This article belongs to the Special Issue Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications)

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12 pages, 1960 KiB

Open AccessArticle

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://0-doi-org.brum.beds.ac.uk/10.3390/ma13030507 - 21 Jan 2020

Cited by 4 | Viewed by 2709

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 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

(This article belongs to the Special Issue Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications)

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23 pages, 4229 KiB

Open AccessArticle

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://0-doi-org.brum.beds.ac.uk/10.3390/ma12203278 - 09 Oct 2019

Cited by 15 | Viewed by 3546

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 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

(This article belongs to the Special Issue Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications)

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16 pages, 2428 KiB

Open AccessArticle

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://0-doi-org.brum.beds.ac.uk/10.3390/ma12132175 - 06 Jul 2019

Cited by 16 | Viewed by 4281

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 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

(This article belongs to the Special Issue Molybdenum-, Vanadium-, and Tungsten-Containing Materials for Catalytic Applications)

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