Synthesis of Analcime by Treating of Domestic Feldspar

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J. Korean Ceram. Soc. > Volume 14(1); 1977 > Article

Journal of the Korean Ceramic Society 1977;14(1): 7.

국산 장석으로부터의 Analcime합성

김면섭

한양대학교 화공과

Synthesis of Analcime by Treating of Domestic Feldspar

ABSTRACT

Domestic Anyang feldspar was treated in autoclave with 1N sodium hydroxide solution for 1-6 hrs at 100-20$0^{circ}C$ By X-ray diffraction patterns and cation exchange capacity, the products were examined. The following concecutive reaction was valid. AlbitelongrightarrowAmorphous aluminosilicatelongrightarrowAnalcime The reaction rate constants, k1 and k2, were 0.20 and 0.15(1/hr) at 20$0^{circ}C$ respectively. The activiation energy from albite to amorphous aluminosilicate was 10 kcal/mol, and from amorphous aluminosilicate to analcine 13 kcal/mol. The analcime obtained was excellent in cation exchange capacity, amounting to 210meq./100g.