%0 Journal Article
%T Physicochemical and structural characteristics of HEU-type zeolitic tuff treated by hydrochloric acid
%A ANA RADOSAVLJEVIC-MIHAJLOVIC
%A VERA DONDUR
%A ALEKSANDRA DAKOVIC
%A JOVAN LEMIC
%J Journal of the Serbian Chemical Society
%D 2004
%I Serbian Chemical Society
%X 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 (60 70 %), which were effected by hydrochloric acid with concentrations of 1 M and above.
%K HEU-type zeolite
%K acid modification
%K X-ray analysis
%K Novakovici
%U http://www.shd.org.yu/HtDocs/SHD/Vol69/No4/V69-No4-05.pdf