Direct Preparation of Powdered Geopolymer Using Polyvinyl Alcohol as Dispersant Template and Its Cu(II) Cation Adsorption Capacity

Autor:	Ayako Baba, Teruhisa Hongo
Rok vydání:	2021
Předmět:	Materials science Condensed Matter Physics Polyvinyl alcohol Dispersant law.invention Geopolymer chemistry.chemical_compound Adsorption chemistry law Materials Chemistry Ceramics and Composites Particle Kaolinite Calcination Metakaolin Nuclear chemistry
Zdroj:	Glass Physics and Chemistry. 47:126-131
ISSN:	1608-313X 1087-6596
DOI:	10.1134/s108765962102005x
Popis:	A direct preparation method for a powdered geopolymer was developed using polyvinyl alcohol as a dispersant template. Metakaolin obtained by calcination of kaolinite at 600 or 750°C was used as silica-alumina source. Powdered samples with average particle sizes of 44.2 and 42.0 µm were prepared from the metakaolin calcined at 600 and 750°C, respectively. The sample prepared from metakaolin calcined at 750°C consisted of geopolymer, while the sample prepared from metakaolin calcined at 600°C consisted of a mixed phase of unreacted metakaolin and geopolymer. The sample prepared from metakaolin calcined at 750°C showed higher Cu(II) cation adsorption ability. The adsorption amount of Cu(II) cation was 40.8 mg/g, which is comparable to the adsorption capacity of the geopolymer prepared by the conventional method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9faa8d9e027e1937338340b42e4a0971 https://doi.org/10.1134/s108765962102005x Zobrazit plný text záznamu Full text from SpringerLink