Collect. Czech. Chem. Commun. 1992, 57, 1218-1220

Synthesis of the 4A-Type Zeolite from Pretreated Red Opalite

Blaga Cekova, V. Zlatanović and H. Stamboliev

School of Technology and Metalurgy, Skopje, Yugoslavia


Synthetic 4A-type zeolite was obtained from a natural raw material of volcanic origin which was thermally and chemically pretreated. The procedures are described together with the characteristics of the zeolite. The 4A-type zeolite prepared in the described way exhibits about 70% of crystallinity when compared with the commercial products and a somewhat lower surface area.