Russian Studies of the Safety of Anion Exchange in Nitric Acid

Abstract

DISCLAIMER rcpoa was prcpartd as an account of work sponsonxi by an agency of.thc Unitcd Statcs Govtmmtnt~ Neither the United States Government nor any agtncy thenx& nor any of their cmploycts, makes any warmpty, cxprcss or impE@, or asstupes any lcgal Izabity or.-responsibility for the accuracy, complctcncss, or'nstfulncss of any infonnatioa,'apparatus, product, orpnxcss discloscd,.or rtprcscnts that 3s usc w o a not infringe privardy owned I+$L~s. Refcmncc htrdin to any specific m m r n d product, pmcess, or service by trade name, trademark, manor or otherwise docs not ncccsdy constitute or imply its endorsaneat,. .-xeccmmaMon, or favoring by the United States Government QT any agency &caw€ Thc v i m and opinions of aushors ucpnxsed htrtin do not ncccssdy stat or rcflect those of *e U n i t e d States Govtsnnitnt or any agmq them€ Portions of this document may be iIiegiile in eiectmnic image products. Images are pmtiuced from the best available original doaxment.

Thermal Degradation Studies of Some Strongly Acidic Cation Exchange Resins

“…Hence, knowledge of the thermal behavior of cation exchange resins is necessary. Abundant data exist on the thermal degradation of anion exchange resins [23][24][25] and on carboxylic cationites with low acidity [26][27]; literature seems to offer relatively poor information on polystyrene-divinylbenzene sulfonic cationites [28][29][30][31][32][33]. Therefore, in the present investigation thermal degradation of strongly acidic sulfonic cationites was performed to understand the degradation steps and to compare the relative thermal stability.…”