Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C
In this study, the thermophysical properties such as the thermal expansion, thermal diffusivity and conductivity, and specific heat capacity of ceramic samples made from kaolin and natural zeolite are investigated up to 1100 °C. The samples were prepared from Sedlec kaolin (Czech Republic) and natur...
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doaj-16cb842a0d154f59b356285666f022e52021-02-08T00:01:20ZengMDPI AGCrystals2073-43522021-02-011116516510.3390/cryst11020165Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °CJán Ondruška0Tomáš Húlan1Ivana Sunitrová2Štefan Csáki3Grzegorz Łagód4Alena Struhárová5Anton Trník6Department of Physics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 94974 Nitra, SlovakiaDepartment of Physics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 94974 Nitra, SlovakiaDepartment of Physics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 94974 Nitra, SlovakiaInstitute of Plasma Physics, Czech Academy of Sciences, Za Slovankou 3, 18200 Prague, Czech RepublicFaculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, PolandDepartment of Materials Engineering and Physics, Faculty of Civil Engineering, Slovak University of Technology, Radlinskeho 11, 810 05 Bratislava, SlovakiaDepartment of Physics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 94974 Nitra, SlovakiaIn this study, the thermophysical properties such as the thermal expansion, thermal diffusivity and conductivity, and specific heat capacity of ceramic samples made from kaolin and natural zeolite are investigated up to 1100 °C. The samples were prepared from Sedlec kaolin (Czech Republic) and natural zeolite (Nižný Hrabovec, Slovakia). Kaolin was partially replaced with a natural zeolite in the amounts of 10, 20, 30, 40, and 50 mass%. The measurements were performed on cylindrical samples using thermogravimetric analysis, a horizontal pushrod dilatometer, and laser flash apparatus. The results show that zeolite in the samples decreases the values of all studied properties (except thermal expansion), which is positive for bulk density, porosity, thermal diffusivity, and conductivity. It has a negative effect for thermal expansion because shrinkage increases with the zeolite content. Therefore, the optimal amount of zeolite in the sample (according to the studied properties) is 30 mass%.https://www.mdpi.com/2073-4352/11/2/165kaolinzeolitekaoliniteclinoptilolitethermal expansionthermal diffusivity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ján Ondruška Tomáš Húlan Ivana Sunitrová Štefan Csáki Grzegorz Łagód Alena Struhárová Anton Trník |
spellingShingle |
Ján Ondruška Tomáš Húlan Ivana Sunitrová Štefan Csáki Grzegorz Łagód Alena Struhárová Anton Trník Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C Crystals kaolin zeolite kaolinite clinoptilolite thermal expansion thermal diffusivity |
author_facet |
Ján Ondruška Tomáš Húlan Ivana Sunitrová Štefan Csáki Grzegorz Łagód Alena Struhárová Anton Trník |
author_sort |
Ján Ondruška |
title |
Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C |
title_short |
Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C |
title_full |
Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C |
title_fullStr |
Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C |
title_full_unstemmed |
Thermophysical Properties of Kaolin–Zeolite Blends up to 1100 °C |
title_sort |
thermophysical properties of kaolin–zeolite blends up to 1100 °c |
publisher |
MDPI AG |
series |
Crystals |
issn |
2073-4352 |
publishDate |
2021-02-01 |
description |
In this study, the thermophysical properties such as the thermal expansion, thermal diffusivity and conductivity, and specific heat capacity of ceramic samples made from kaolin and natural zeolite are investigated up to 1100 °C. The samples were prepared from Sedlec kaolin (Czech Republic) and natural zeolite (Nižný Hrabovec, Slovakia). Kaolin was partially replaced with a natural zeolite in the amounts of 10, 20, 30, 40, and 50 mass%. The measurements were performed on cylindrical samples using thermogravimetric analysis, a horizontal pushrod dilatometer, and laser flash apparatus. The results show that zeolite in the samples decreases the values of all studied properties (except thermal expansion), which is positive for bulk density, porosity, thermal diffusivity, and conductivity. It has a negative effect for thermal expansion because shrinkage increases with the zeolite content. Therefore, the optimal amount of zeolite in the sample (according to the studied properties) is 30 mass%. |
topic |
kaolin zeolite kaolinite clinoptilolite thermal expansion thermal diffusivity |
url |
https://www.mdpi.com/2073-4352/11/2/165 |
work_keys_str_mv |
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