Contactez-nous! +33 (0)2 31 45 28 21
lcs@ensicaen.fr
  • Français
Laboratoire Catalyse et SpectrochimieLaboratoire Catalyse et SpectrochimieLaboratoire Catalyse et SpectrochimieLaboratoire Catalyse et Spectrochimie
  • Who are we?
    • Research at LCS
    • Who are we?
    • News
    • Lab activities and organization
    • Education
    • The doctoral and postdocs blog
    • History
  • Technical platforms
    • Catalytic Tests & Chemisorption Platform
    • VISIO platform
    • Solid State NMR platform
      (NMR center of Caen-Normandy)
    • Synthesis & Characterization Platform
  • Industrial partnership
  • Work at the lab
  • Contact us!
    • Contact us!
    • Laboratory staffs
    • LCSValoris serving companies
Next Previous

One-pot synthesis of silanol-free nanosized MFI zeolite

31 July 2017

 

Zeolites are very well-known as catalysts, ion-exchangers and adsorbents in industry. As any crystal, they are never perfectly organized and defects are always present; one of the most annoying is due to missing tetrahedral atoms leading to the presence of silanols (Si-OH groups). These weak points are where zeolites are attacked and loose some of their most sought after properties. Zeolites demonstrated recently a great potential in the conversion of biomass and upgrading of natural gas (CH4), however the reaction conditions are severe (hot liquid water and/or high temperature) and are known to affect drastically zeolite properties, in particular those of nanosized zeolites (< 100nm). There is a need to prepare “defect-free” zeolites to sustain these harsh conditions.

The new zeolite nanocrystals synthesized and comprehensively characterized by teams of LCS and CRISMAT in Caen (ENSICAEN, Normandy University, CNRS) and University of Sofia, Bulgaria meet these new requirements. These point-free defect nanosized zeolites are stable at least up to 900 ºC and become prime candidates for numerous industrially important catalytic applications (olefin metathesis, direct methane aromatization…). Moreover, in the emerging field of biomass upgrading to fuels and chemicals, the newly prepared zeolite with great stability in hot liquid water will contribute to move academically appealing chemistry to an industrial reality.

 

Researchers at LCS (ENSICAEN / Normandy University / CNRS, Caen) reported a unique one-pot synthesis strategy to prepare defect-free nanosized MFI-type zeolite by introducing tungsten in their framework as a defect-suppressing element. The teams of CRISMAT (ENSICAEN / Normandy University / CNRS, Caen) and University of Sofia, Bulgaria contributed to a thorough characterization of the materials.

These results are published in the journal Nature Mater. (2017) 10.1038/nmat4941

 

Tungsten incorporation in nanosized MFI crystals modifies many of their properties such as structural features, hydrophobicity, Lewis acidity and stability. These in turn significantly affect their catalytic (e.g. epoxidation of styrene) and separation (e.g. CO2 and NO2) properties as shown in the Nature Materials paper.

 

The syntheis method was patented (April 2017) before by the LCS- researchers (S. Mintova, S. Talapaneni, J. Grand, J-P. Gilson, Method for the preparation of defect free nanosized synthetic zeolite materials, WO/2017/068387). Significant interest in these patented materials has already been expressed by industry.

 

Moreover, a fast diffusion of reactants and products inside the (defect-free) zeolite nanocrystals insures an optimal use in catalysis and separation applications. Substantially lower deactivation by coke formation is expected from zeolitic catalysts combining the absence of defect and nanosized crystals. Finally, the superior colloidal stability of the W-MFI zeolite nanocrystals will facilitate their uniform dispersion and applications in medicine, catalysis, sorption, and optical coatings.

 

These silanol-free and highly stable nanosized zeolites will have a great impact in several fields such as material science, heterogeneous catalysis, sorption and ion exchange processes as well as colloid chemistry. In addition, this new synthesis strategy opens the route to the preparation of highly stable defect-free nanosized zeolites of different types and containing other framework transition metal ions (Mo, Sn, V, Zr…), which have application in a broad range of areas.

 

 

Reference: Nature Mater. 10.1038/nmat4941 (2017)

 

Julien Grand, Siddulu Naidu Talapaneni, Aurélie Vicente, Christian Fernandez, Eddy Dib, Hristiyan A. Aleksandrov, Georgi N. Vayssilov, Richard Retoux, Philippe Boullay, Jean-Pierre Gilson, Valentin Valtchev and Svetlana Mintova “One-pot synthesis of silanol-free nanosized MFI zeolite”

 

Research contact

Svetlana Mintova, Catalysis and Spectrochemistry Laboratory – Caen

Email: svetlana.mintova@ensicaen.fr

  • You may also like

    SpectroCat Workshop (Caen, Normandy, May 30-31, 2018)

    Read now
  • You may also like

    1st International GFZ à Cabourg (Mars 2018) : Groupe Français des zéolithes

    Read now
  • You may also like

    Zeolite Synthesis Research

    Read now
  • You may also like

    WORKSHOP !!! Zeolites : Prospects and Challenges

    Read now
  • You may also like

    EcoHdoc

    Read now
  • You may also like

    DIVCAT 2012 : Arnaud Travert

    Read now
  • You may also like

    LABORATOIRE CATALYSE & SPECTROCHIMIE

    Read now
  • You may also like

    Production de carburants propres

    Read now
  • You may also like

    [CLOSED] PhD Position in hyperpolarized (HP) xenon and operando solid state NMR.

    Read now
  • You may also like

    Le CNRT se dote d’un nouveau site web !

    Read now

Twitter timeline

Institut Carnot Energie & Systèmes de Propulsion
5h
Institut Carnot Energie & Systèmes de Propulsion
@Carnot_ESP

#Actualités: Le @labo_lcs et le laboratoire @CRISMAT_CNRS font la couverture de @ChemPhysChem ! A découvrir: carnot-esp.fr/couver… @Reseau_Carnot #RetD #Recherche #innovation pic.twitter.com/xr0x…

Retweeted by Catalyse & SpectroRetweeted by Catalyse & Spectro
Expand reply reply retweet retweet favorite favorite
Institut Carnot Energie & Systèmes de Propulsion
6h
Institut Carnot Energie & Systèmes de Propulsion
@Carnot_ESP

🖥️COPIL #AirCar au programme cet après-midi. Merci à tous pour ce temps d'échange ! ▶️aircar-carnot.fr @Reseau_Carnot #RetD #Recherche #innovation #partenariat #industrie pic.twitter.com/tYgm…

Retweeted by Catalyse & SpectroRetweeted by Catalyse & Spectro
Expand reply reply retweet retweet favorite favorite
Catalyse & Spectro
17h
Catalyse & Spectro
@labo_lcs

🆕The Absence of Oxygen in Sulfation Promotes the Performance of the Sulfated CeO2 #Catalyst for Low-Temperature Selective Catalytic Reduction ... ▶️doi.org/10.1021/acss… @INC_CNRS @ENSICAEN @Universite_Caen @Reseau_Carnot @Carnot_ESP @CNRS @CNRS_Normandie @normandieuniv pic.twitter.com/6Ukn…

Expand reply reply retweet retweet favorite favorite
Catalyse & Spectro
18 Jan
Catalyse & Spectro
@labo_lcs

👨‍🔬Premier conseil de laboratoire en ligne pour Guillaume Clet, le nouveau directeur du @labo_lcs ! Exercice réussi. Bienvenue Guillaume ! ▶️lcs.ensicaen.fr @INC_CNRS @ENSICAEN @Universite_Caen @Reseau_Carnot @Carnot_ESP @CNRS @CNRS_Normandie @normandieuniv pic.twitter.com/3IY8…

Expand reply reply retweet retweet favorite favorite
Institut Carnot Energie & Systèmes de Propulsion
18 Jan
Institut Carnot Energie & Systèmes de Propulsion
@Carnot_ESP

🆕Retrouvez les publications de nos laboratoires directement sur @hal_fr à partir du site web du @Carnot_ESP ! ▶️carnot-esp.fr/nos-la… @Reseau_Carnot #RetD #recherche #partenariat #industrie #innovation pic.twitter.com/1wbp…

Retweeted by Catalyse & SpectroRetweeted by Catalyse & Spectro
Expand reply reply retweet retweet favorite favorite
Catalyse & Spectro
17 Jan
Catalyse & Spectro
@labo_lcs

🧪Micro- and macroscopic observations of the #nucleation process and #crystal growth of nanosized Cs-pollucite in an #organotemplate-free hydrosol ▶️hal.archives-ouverte… @INC_CNRS @ENSICAEN @Universite_Caen @Reseau_Carnot @Carnot_ESP @CNRS @CNRS_Normandie @normandieuniv

Expand reply reply retweet retweet favorite favorite
Catalyse & Spectro
16 Jan
Catalyse & Spectro
@labo_lcs

🧪Nanosized Cs-pollucite #zeolite synthesized under mild condition and its #catalytic behavior ▶️hal.archives-ouverte… @INC_CNRS @ENSICAEN @Universite_Caen @Reseau_Carnot @Carnot_ESP @CNRS @CNRS_Normandie @normandieuniv

Expand reply reply retweet retweet favorite favorite
Catalyse & Spectro
15 Jan
Catalyse & Spectro
@labo_lcs

🆕#Perovskite-Type LaCoO3 as an Efficient and Green #Catalyst for Sustainable Partial Oxidation of #Cyclohexane. #Oxygen #adsorption ▶️doi.org/10.1021/acs.… @INC_CNRS @ENSICAEN @Universite_Caen @Reseau_Carnot @Carnot_ESP @CNRS @CNRS_Normandie @normandieuniv pic.twitter.com/shSL…

Expand reply reply retweet retweet favorite favorite
Michael BADAWI
15 Jan
Michael BADAWI
@michael_badawi

Offre d'emploi Post-doctorant (H/F) - CDD: Simulation avancée de matériaux zéolithiques pour la séparation, le transport et le stockage de CH4 et H2 bit.ly/38B0uqW #Emploi via @EmploiCNRS

Retweeted by Catalyse & SpectroRetweeted by Catalyse & Spectro
Expand reply reply retweet retweet favorite favorite
Institut Carnot Energie & Systèmes de Propulsion
15 Jan
Institut Carnot Energie & Systèmes de Propulsion
@Carnot_ESP

💻COPIL @FiliereCarnauto en visio cet après-midi. Merci à tous pour ce moment d'échange très agréable et sympathique !!! ▶️carnauto.fr/a-propos… @Reseau_Carnot #RetD #recherche #partenariat #industrie #innovation pic.twitter.com/3uVo…

Retweeted by Catalyse & SpectroRetweeted by Catalyse & Spectro
Expand reply reply retweet retweet favorite favorite
Follow @labo_lcs

Legal Notice

The LCS website is made available under the terms of the Creative Commons Attribution 4.0 International license.

Click here for full details!

Site map

  • Home
  • Work at the lab
  • Who are we?
    • History
    • Lab activities and organization
      • Laboratory members
      • Technical platforms
        • VISIO platform
        • Solid State NMR platform
          (NMR center of Caen-Normandy)
        • Synthesis & Characterization Platform
        • Catalytic Tests & Chemisorption Platform
      • Health and Safety
  • News
    • Events
      • SPECTROCAT workshop
    • Job opportunities at LCS
  • Research at LCS
    • Collaborations
    • Catalysis for energy, chemistry and environmental protection
    • Porous materials: from preparation to applications
    • Spectrocat team
    • Spectroscopic tools and methodologies
    • Zeolite team
    • ANR projects
      • Microgreen
      • EcoHdoc
      • BioSyngOp
    • European Projects
  • Research at LCS
  • Industrial partnership
    • LCS Valoris, the bridge between research and business
    • ESP Carnot Institute : Energy and Propulsion Systems
    • Industrial partners and collaborations
  • Education
    • Master of Chemistry: Course CED2 (Catalysis, Environment and Sustainable Development)
    • Summer school “Spectrocat”
      • Summer school Spectrocat 2013 – extranet
      • SPECTROCAT Summer School 2016
      • Summer school SpectroCat 2013
    • PhD
  • The doctoral and postdocs blog
  • Bibliography
  • Contact us!

Tags

adsorbents best poster gecat 2018 Carnot CNRT Conference CRISMAT Diffraction ESP Hiring IZA IZC membranes Metal Organic Framework metal oxides mof MT180 NOx Operando IR spectroscopy PRISME Propyne Publish reaction SCF Science magazine Spectrocat spectroscopy storage/reduction suspensions Thesis WEB Workshop zeolites Catalysis Catalyst distinctions internship job photocatalysis zeolites

Publications récentes

  • Removal of chlorinated volatile organic compounds onto natural and Cu-modified zeolite: The role of chemical surface characteristics in the adsorption mechanism
  • Facile and fast determination of Si/Al ratio of zeolites using FTIR spectroscopy technique
  • Highly active Pd containing EMT zeolite catalyst for indirect oxidative carbonylation of methanol to dimethyl carbonate
  • Double Stopband Bilayer Photonic Crystal Based Upconversion Fluorescence PSA Sensor

Collection LCS HAL

Copyright 2020 - Laboratoire Catalyse & Spectrochimie - Directeur de publication : Guillaume CLET | Creative Commons 4.0 International
  • Français
Laboratoire Catalyse et Spectrochimie
Login

Lost your password?

Reset Password

Log in