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ADSORPTION AT CRYSTAL‐SOLUTION INTERFACES *
Author(s) -
Benneit G. W.,
France W. G.
Publication year - 1928
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1928.tb17041.x
Subject(s) - alum , adsorption , chemistry , crystal growth , flocculation , ammonium , crystal (programming language) , inorganic chemistry , gelatin , chemical engineering , crystallography , mineralogy , organic chemistry , computer science , engineering , programming language
The present work is a continuation of the study of adsorption processes at solution crystal interfaces. It consists of an investigation of the adsorption of dyes, gelatin, and amino acids by the various faces of ammonium alum. The growth ratios of this alum were measured both in the presence and absence of these foreign substances. Adsorption was found to occur only at the cube faces and to be specific in character. The effects obtained are explained on the basis of residual valencies, polar groups in the adsorbed material, and the interionic distances in the crystal lattice. The extension of these ideas to the study of the flocculation of suspensoid sols has been suggested. The growth ratio V 100 / V 111 for pure ammonium alum was found to be 1.53