Study of the anomalous behaviour of MFI zeolites towards nitrogen adsorption
Theocharis, Charis R.
SourceStudies in Surface Science and Catalysis
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In this presentation we discuss the effect of the presence of small amounts of template and of the nature of the exchangeable cation on the shape of the nitrogen adsorption isotherm of ZSM-5 zeolite samples. It was found that for some exchangeable cations a low-pressure hysteresis loop is shown for Si: Al ratio of 120 but not 80. An explanation of the conditions under which the loop appears is given. © 2007 Elsevier B.V. All rights reserved.