Hydrolysis of zeolite framework aluminum and its impact on acid catalyzed alkane reactions

• Published in: Journal of catalysis Vol. 365; pp. 359 - 366
• Main Authors: Xue, Nianhua, Vjunov, Aleksei, Schallmoser, Stefan, Fulton, John L., Sanchez-Sanchez, Maricruz, Hu, Jian Zhi, Mei, Donghai, Lercher, Johannes A.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.09.2018
• Subjects: alkanes; aluminum; aluminum oxide; Bronsted acids; Butane cracking; catalytic activity; Confinement effect; crystallites; dehydrogenation; entropy; H/D exchange; hydrogen; hydrolysis; HZSM-5; kinetics; Mild steaming; nuclear magnetic resonance spectroscopy; solids; stable isotopes; steaming; temperature; water vapor; zeolites; Mild steaming; H/D exchange; HZSM-5; Confinement effect; Butane cracking

[Display omitted] •Mild steaming leads to partially framework-bound aluminum oxide species.•These aluminum oxide clusters are in the vicinity of Brønsted acid sites.•Site proximity leads to an increase of activation entropies for alkane cracking.•n-Butane cracking and D2/OH exchange reaction rates a...