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The Characterization of Natural and Artificial Calcium Carbonates by Adsorption and Immersion Techniques
Author(s) -
Morel Daniel,
Stoeckli Fritz,
Krähenbühl Francis,
Misteli Laurent,
Munyazikwiye Paulin
Publication year - 1985
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19850680706
Subject(s) - chemistry , microporous material , adsorption , immersion (mathematics) , porosity , calcium , specific surface area , calcium carbonate , chemical engineering , mineralogy , inorganic chemistry , organic chemistry , mathematics , pure mathematics , engineering , catalysis
Abstract Nitrogen adsorption isotherms at 77K and enthalpies of immersion into water at 293K have been measured for a series of artificial and natural calcium carbonates. It appears that the external surface area and the micropore system can be fully characterized if a non‐porous sample, present in the series, is used as an internal reference. Data are given for the reference isotherm. Owing to high specific interactions, immersion into water only provides information on the total surface area of the samples.