Controllable synthesis of sodalite submicron crystals and microspheres from palygorskite clay using a two-step approach

Autor:	Liangdong Feng, Jinlong Jiang, Yeling Jin, Xu Gu, Chuansong Duanmu, Jie Wu, Tao Hu
Rok vydání:	2012
Předmět:	Morphology (linguistics) Materials science General Chemical Engineering Alkalinity chemistry.chemical_element Mineralogy Palygorskite Microsphere Crystal chemistry.chemical_compound Chemical engineering chemistry Aluminium Sodalite medicine Particle size medicine.drug
Zdroj:	Powder Technology. 217:298-303
ISSN:	0032-5910
DOI:	10.1016/j.powtec.2011.10.041
Popis:	Sodalite submicron crystals and microspheres were successfully synthesized from natural palygorskite clay through a two-step approach by varying the synthetic parameters. The effects of initial NaOH concentration, SiO 2 /Al 2 O 3 molar ratio, and aluminium source on the morphology and particle size of synthetic sodalite were investigated, as well as the formation scheme of synthetic sodalite. Experimental results showed that the alkalinity of the synthesis gel controlled by initial NaOH concentration and SiO 2 /Al 2 O 3 molar ratio was a critical factor for the formation of sodalite crystals and microspheres. Sodalite crystals could be synthesized at high initial NaOH concentration and SiO 2 /Al 2 O 3 molar ratio, however, low initial NaOH concentration and SiO 2 /Al 2 O 3 molar ratio were beneficial for the formation of sodalite microspheres via submicron crystal aggregation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ecd18967dec4d8e059be3f48ff3f8fd https://doi.org/10.1016/j.powtec.2011.10.041 Zobrazit plný text záznamu Full Text from ScienceDirect