Glass-Ceramic Foams Produced from Zeolite-Poor Rock (Tokaj)

Ibrahim, Jamal Eldin F. M. and Tihtih, Mohammed and Kurovics, Emese and Şahin, Ethem İlhan and Gömze, László A. and Kocserha, István (2023) Glass-Ceramic Foams Produced from Zeolite-Poor Rock (Tokaj). POLLACK PERIODICA : AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES, 18 (1). pp. 119-125. ISSN 1788-1994 (print); 1788-3911 (online)

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Abstract

This study evaluated the possibility of producing innovative glass-ceramic foams from zeolite-poor rock (Tokaj, Hungary) using alkali-activation and reactive sintering techniques. The composition and morphology of the samples were studied using X-ray diffraction, X-ray fluorescence, scanning electron microscope, and computed tomography techniques. The influence of various sintering temperatures on glass-ceramic foams was examined. It has been observed that zeolite-poor rock has a self-foaming capability. The heat treatment temperature affects the pore size and distribution as well as the technical characteristics of the obtained samples. The resulting glass-ceramic foams possess moderate thermal conductivity ranging from 0.11 to 0.17 W mK-1 and good compressive strength (1.5–4.4 MPa). The produced samples might be utilized for thermal insulation, which would have both economic and environmental advantages.

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