Physicochemical and structural characteristics of HEU-type zeolitic tuff treated by hydrochloric acid

Autor: MAGDALENA TOMASEVIC-CANOVIC, JOVAN LEMIC, ALEKSANDRA DAKOVIC, VERA DONDUR, ANA RADOSAVLJEVIC-MIHAJLOVIC
Jazyk: angličtina
Rok vydání: 2004
Předmět:
Zdroj: Journal of the Serbian Chemical Society, Vol 69, Iss 4, Pp 273-281 (2004)
Druh dokumentu: article
ISSN: 0352-5139
Popis: Samples of natural HEU-type zeolites clinoptilolite-Ca, from the Novakovici deposit (near Prijedor, Bosnia and Herzegovina) were treated with the hydrochloric acid of various concentrations (from 10-3 M to 2 M). Zeolitic tuffs before and after the acid treatment were examined using IR, XRPD, and chemical analyses. The changes in the crystal structure of acid treated samples showed a significant reduction in the crystallinity of zeolitic tuffs (6070 %), which were effected by hydrochloric acid with concentrations of 1 M and above.
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