Determination of Microporous and Mesoporous Surface Areas and Volumes of Mesoporous Zeolites by Corrected t ‐Plot Analysis

Autor: Lucie Desmurs, Anne Galarneau, Claudia Cammarano, Vasile Hulea, Cyril Vaulot, Habiba Nouali, Benedicte Lebeau, T. Jean Daou, Carla Vieira Soares, Guillaume Maurin, Maciej Haranczyk, Isabelle Batonneau‐Gener, Alexander Sachse
Přispěvatelé: Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université de Montpellier (UM), Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Instituto Madrileño de Estudios Avanzados (IMDEA), Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Sachse, Alexander
Rok vydání: 2022
Předmět:
Zdroj: ChemNanoMat
ChemNanoMat, 2022, 8 (4), pp.e202200051. ⟨10.1002/cnma.202200051⟩
ISSN: 2199-692X
DOI: 10.1002/cnma.202200051
Popis: International audience; Zeolites are well-known microporous catalysts, involved in many industrial applications. Their microporosity yet impedes diffusion of bulky molecules/feedstocks. To overcome this drawback, zeolites with bimodal porosity, e.g. micropores and mesopores were developed during the last decades. In this context, it is important to develop/use methods able to evaluate accurately the textural properties of micro-/mesoporous zeolites. t-Plot is commonly used for determining the micro-and mesopore surface areas and pore volumes. However, previously we showed that the classical t-plot analysis overestimates the mesopore surface areas and underestimates the micropore volumes for FAU-Y micro-/mesoporous zeolite. Measurements performed with mechanical mixtures of FAU-Y and MCM-41 allowed us to provide corrections to the t-plot analysis. These corrections were up to date limited to FAU structured zeolites. In the present work, we present specific corrections of the t-plot for a broader series of zeolites including MFI, *BEA and MOR, based on a set of mechanical mixtures of zeolites and MCM-41. Minor correction factors were required for MOR, whilst for MFI and *BEA similar corrections as for the FAU-Y were inferred for the micropore volume. As far as the surface area is concerned higher correction factors were required for MFI compared to *BEA. This corrected t-plot analysis was applied to characterize a great variety of mesoporous zeolites prepared by micelle-templating following a two-steps procedure.
Databáze: OpenAIRE
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