Open AccessThe expansion of charcoal on sorption of carbon dioxide
Author(s) -
F. T. Meehan
Publication year - 1927
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1927.0085
Subject(s) - swelling , sorption , materials science , chemistry , composite material , chemical engineering , organic chemistry , adsorption , engineering
In the examination of certain building materials it has been found that an expansion takes place on absorption of water. This expansion is a movement of the order of strain movements in structural materials and not of the magnitude expected by the physical chemist in connection with elastic gels. Accompanying this small expansion of building materials is a fundamental change in physical properties. McBain ('Journal of Physical Chemistry’) showed that the building materials which possess the property of swelling with increased water content are colloidal structures, presumably of the rigid gel type. It therefore appeared desirable to ascertain whether rigid gels in general exhibited this small swelling movement. Graham has shown that palladium expands linearly by 1.6 per cent. when it absorbs hydrogen.