Rietveld analysis of geopolymer prepared from amorphous rice husk silica with different thermal treatment

Autor:	Rofikatul Karimah, S. Sembiring, Agus Riyanto, I. Firdaus, Sadang Husain
Rok vydání:	2021
Předmět:	Geopolymer History Boehmite Materials science Chemical engineering Rietveld refinement Phase (matter) Crystal structure Thermal treatment Gibbsite Computer Science Applications Education Amorphous solid
Zdroj:	Journal of Physics: Conference Series. 1751:012070
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1751/1/012070
Popis:	The work aims to study the temperature effect on the geopolymer’s crystal structure prepared from amorphous silica rice husk. The samples were prepared via the sol-gel method and then subjected to thermal at a temperature of 250-650 °C. EDS identified the element and compound composition on the surface of the sample. The crystal structure of samples identified by Rietveld refinement of XRD. The sample was dominated by the gibbsite phase at relatively low temperatures (250 °C). The boehmite phase dominates at a temperature of 350-450 °C. The amorphous structure of the geopolymer was formed at a temperature of 550-650 °C. The geopolymer mainly formed from the reaction of boehmite and silica. This study shows a significant effect of temperature on the formation of the geopolymer structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::52ad2ae9852efe822f21e9354d7b2238 https://doi.org/10.1088/1742-6596/1751/1/012070 Zobrazit plný text záznamu