Reactions of kaolinites and metakaolinites with NaOH—comparison of different samples (Part 1)

Autor:	Isaak Lapides, L. Heller-Kallai
Rok vydání:	2007
Předmět:	chemistry.chemical_compound Crystallinity Geochemistry and Petrology Chemistry Sodium hydroxide Impurity Inorganic chemistry Sodalite Kaolinite Geology Clay minerals Zeolite Hydrothermal circulation
Zdroj:	Applied Clay Science. 35:99-107
ISSN:	0169-1317
DOI:	10.1016/j.clay.2006.06.006
Popis:	Reactions with aqueous sodium hydroxide of eight different kaolinites and of metakaolinites derived from them were studied under hydrothermal conditions. All the kaolinites gave basic hydrosodalite 8:2:2 (8Na+/2OH−/2H2O) as the primary product. The metakaolinites reacted to produce mainly zeolite A, in some of the samples associated with minor amounts of zeolite X. After 5 days, all the metakaolinites were converted to hydrosodalite. The kinetics of the reactions of the samples differed, but no correlation could be established between the rates of the reactions and the crystallinity of the kaolinites, the impurities present or any other observed feature of the starting material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e40373a3ce9037aba170229152496525 https://doi.org/10.1016/j.clay.2006.06.006 Zobrazit plný text záznamu Full Text from ScienceDirect