Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 100, Issue 1-3, Pages 6-11Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2006.09.044
Keywords
chromatographic breakthrough curve; dealuminated ultrastable Y zeolite; mesoporosity; nitrogen adsorption; mercury intrusion
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Liquid phase breakthrough experiments were performed in order to characterize the accessible mesoporosity of a dealuminated Y zeolite. The methodology presented herein shows that the use of a bulky molecular probe such as 1,3,5-triisopropylcyclohexane allows discrimination between the occluded mesoporosity accessible via the micropores only, and mesopores connected to the external surface of the zeolite crystals. The results, compared to nitrogen physisorption and mercury intrusion data, show that in commercial ultrastable Y CBV780 zeolite mesoporosity is mainly connected to the surface of the zeolite crystals. (c) 2006 Elsevier Inc. All rights reserved.
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