Über die Herstellung und Anwendung neuerer Austauschadsorbentien, insbesondere auf Harzbasis (Auszug)

Synthetic Resins as Exchange Adsorbents

“…Chemical constitution rather than mere composition determines the capacity of synthetic resin ion-exchange adsorbents, as contrasted to the general dependence of the capacity of siliceous and carbonaceous exchangers on chemical composition. The sulfur content of carbonaceous exchangers was correlated with the exchange capacity by Griessbach (28), which is in accord with the general method of preparation (sulfonation) of such products. On the other hand, the sulfur content of a cation-exchange resin which is based upon an aromatic sulfonic acid polymer may furnish information as to its probable behavior, but only to an approximate degree.…”

Adsorption Isotherms of Synthetic Resin Ion-Exchange Adsorbents

“…attention of chemists on synthetic resins as truly synthetic organic base-exchange materials, and on resins as chemical compounds capable of specific chemical reaction, as opposed to the former emphasis on the physical properties of synthetic polymers. The patent literature and the commercial development of the resinous ion exchangers have grown rapidly (7,12), while the fundamental investigations appear to be limited to those of Bhatnagar and co-workers (S, 4), Akeroyd and Broughton (2), Broughton and Lee (5), and Schwartz and co-workers (16). These investigators have examined the adsorptive character of a few simple phenolformaldehyde and amine-formaldehyde resins.…”

“…These investigators have examined the adsorptive character of a few simple phenolformaldehyde and amine-formaldehyde resins. Other than a brief reference by Griessbach (7) to the possible correlation of the pH-neutralization curves of substituted phenol-aldehyde resins and the practical application of such materials as hydrogen exchangers, no attempt appears to have been made to translate fundamental studies into practical application.…”

Progress in Brewing Science and Technology

“…Where the ram water supply is unusually hard or where i t contains excessive quantities of specific mineral constituents such as sodium chloride, demineralization by ion exchange may be resorted to (1,2, 19,72,97,113,167,201). Following demineralization, salts necessary to give the water the desired characteristics for brewing purposes are added.…”