Premium
Toolbox of Post‐Synthetic Mordenite Modification Strategies: Impact on Textural, Acidic and Catalytic Properties
Author(s) -
Issa Hussein,
Chaouati Nourrddine,
Toufaily Joumana,
Hamieh Tayssir,
Sachse Alexander,
Pinard Ludovic
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201900927
Subject(s) - mordenite , zeolite , catalysis , chemistry , disproportionation , selectivity , fluid catalytic cracking , toluene , chemical engineering , organic chemistry , engineering
Which post‐synthetic modification strategy is the best suited for the generation of particular textural or chemical features in mordenite for a desired catalytic application? The aim of this contribution is to shed light on the effective quality of zeolite hierarchization through the rational study of structure/catalytic property dependency. Our study focused on mordenite, as this zeolite is of particular importance due to its strong acidity and monodimensional channel system, which explains why mordenite is industrially extensively employed. A toolbox of post‐synthetic hierarchization strategies on aluminum rich and poor mordenites has been developed based on basic treatments assisted by CTAB and pyridine at various temperatures (in conventional and microwave heating) and acid HF etching in aqueous and organic medium. A systematic study of over 30 post‐synthetically modified mordenites was conducted, which allowed us to assess the impact of each hierarchization strategy on textural, morphological, chemical and catalytic properties. Major correlations between structural features and catalytic activity, selectivity and stability in both the monomolecular n ‐hexane cracking and the bimolecular toluene disproportionation were deduced.