ArticleMolecules (Basel, Switzerland)2022
On the Nature of Extra-Framework Aluminum Species and Improved Catalytic Properties in Steamed Zeolites.
Article in Molecules (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 27 citations in OpenAlex.
- Beyond Dealumination: Does Fluorine Reshape Zeolitic Acidity?Journal of the American Chemical Society · 2026Article
- Nature of ammonia storage sites in H-SSZ-13 and Cu-SSZ-13.RSC advances · 2026Article
- Paracetamol Removal from Aqueous Media Through Fenton Reaction Using ZSM-5 Zeolite Produced from Fly Ash.Molecules (Basel, Switzerland) · 2026Article
- Regulation of the Si/Al ratios and Al distributions of zeolites and their impact on properties.Chemical science · 2023Review
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Authors and funding
6 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Steamed zeolites exhibit improved catalytic properties for hydrocarbon activation (alkane cracking and dehydrogenation). The nature of this practically important phenomenon has remained a mystery for the last six decades and was suggested to be related to the increased strength of zeolitic Bronsted acid sites after dealumination. We now utilize state-of-the-art infrared spectroscopy measurements and prove that during steaming, aluminum oxide clusters evolve (due to hydrolysis of Al out of framework positions with the following clustering) in the zeolitic micropores with properties very similar to (nano) facets of hydroxylated transition alumina surfaces. The Bronsted acidity of the zeolite does not increase and the total number of Bronsted acid sites decreases during steaming. O
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