期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 60, 期 1-3, 页码 1-17出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1387-1811(03)00339-1
关键词
zeolites; microporous materials; mesoporous materials; adsorption; isotherm; pore size distribution; post-synthesis treatment; alkaline treatment; steam treatment; pore size model
Physical gas adsorption is extensively used in the characterization of micro- and mesoporous materials and is often considered as a straightforward-to-interpret technique. However, physical phenomena like the tensile strength effect, adsorbate phase transitions, and monolayer formation in combined micro- and mesoporous materials frequently lead to extra contributions in the adsorption isotherm. Models for pore size determination mostly do not account for this, and assignment to real pores leads to improper analysis of adsorption data. In this review, common pitfalls and limitations in the analysis of pore size distributions derived from adsorption isotherms of micro- and mesoporous materials are identified and discussed based on new results and examples reported in the recent literature. (C) 2003 Elsevier Science Inc. All rights reserved.
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