Abstract
Porous ceramics have been attracted attention extensively because of their excellent chemical and thermal stability, excellent permeability, high specific surface area, extremely low electrical and thermal conductivity, energy saving, heat resistance and corrosion resistance. In this paper, diatomite-based porous ceramics were prepared using diatomite as main raw material and calcite as pore-forming agent. The effect of calcite were studied by thermal analysis, XRD, SEM, and porosity. The calcite decomposed at 600–800 °C and CaSiO3 was synthesized in situ though the reaction of CaO from the calcite and SiO2 from the diatomite. At sintering temperature of 1050 °C, the porous ceramic with 20% calcite addition reserved sub-micrometer pore structure of raw material diatomite as well as a relative high porosity (about 60%), which showed potential application in filtration.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (No. 51402028), Project of CDUT Innovation Team (Utilization of Rare Earth Resource and New Materials), and Sichuan Panxi Strategic Mineral Resource Innovation and Development Experimental Area 3rd Significant Science and Technology Project (No. CDWA2016ZC3-1).
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Zhang, L., Ma, K., Luo, H., Jin, X., Li, J., Li, L. (2018). Preparation of Diatomite-Based Porous Ceramics. In: Han, Y. (eds) Advances in Energy and Environmental Materials. CMC 2017. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-13-0158-2_38
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DOI: https://doi.org/10.1007/978-981-13-0158-2_38
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