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A Study of Contemporary Zeolites
Author(s) -
Collins Leo F.
Publication year - 1937
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1937.tb14005.x
Subject(s) - yield (engineering) , raw material , class (philosophy) , chemical composition , chemistry , mathematics , polymer science , organic chemistry , epistemology , materials science , philosophy , metallurgy
SYNOPSIS This paper is a compilation of data concerning the chemistry and use of contemporary zeolites. Chemical analyses of raw materials, and of a representative number of new and used zeolites from each of the various classes plus 35 sieve analyses of new and used products, and a résumé of theories concerning the constitution and reactions of base‐exchangers constitutes the nucleus of the treatise. It is shown that the chemical composition of natural zeolites is not materially changed by the processing methods used, that the latter are similar in character and that for zeolites of a given class there is little difference in chemical composition. It is also shown that the chemical and physical characteristics of six different zeolites were changed upon use, and it is pointed out that the susceptibility of contemporary products to yield to certain external influences limits their industrial utility, particularly their use in the treatment of waters for steam boilers. In general the paper establishes a basis for judging the limits within which such materials may be expected to perform with reasonable satisfaction and in the general summary nine precautions are listed for ameliorating the major troubles which are believed to frequently attend the operation of large softeners.