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Cover Picture: Staining of Fluid‐Catalytic‐Cracking Catalysts: Localising Brønsted Acidity within a Single Catalyst Particle (Chem. Eur. J. 4/2012)
Author(s) -
Buurmans Inge L. C.,
RuizMartínez Javier,
van Leeuwen Sanne L.,
van der Beek David,
Bergwerff Jaap A.,
Knowles William V.,
Vogt Eelco T. C.,
Weckhuysen Bert M.
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201290008
Subject(s) - catalysis , zeolite , brønsted–lowry acid–base theory , polymer , chemistry , fluid catalytic cracking , trifluoroacetic acid , electron transfer , particle (ecology) , nanoscopic scale , copper , nanotechnology , chemical engineering , materials science , organic chemistry , engineering , oceanography , geology
A staining approach using the Brønsted acid catalyzed styrene oligomerization reaction has been applied to selectively visualize the zeolite domains within fluid‐catalytic‐cracking catalyst particles with confocal fluorescence microscopy. This catalyst material is industrially applied for the production of gasoline from oil fractions and its active ingredient is the zeolite component. Micron‐sized zeolite domains (green) were found to be inhomogeneously distributed within the catalyst particles and their decrease in Brønsted acidity as a function of deactivation could be monitored in terms of a decrease in fluorescence intensity. For more details see the Full Paper by B. M. Weckhuysen et al. on page 1094 ff. We thank Agnieszka Ruppert for designing the figure.