Modified kaolins
Data(s) |
08/02/2000
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Resumo |
A process for the preparation of a modified kaolin from a kaolin group mineral which includes expansion and contraction of layers of the kaolin group mineral. The layers comprising one Si-tetrahedral sheet and one Al-octahedral sheet. The expansion and contraction may be initiated by initial intercalation of a reagent which can penetrate kaolin layers to reach an interlayer region there between to form an intercalate. Subsequently, the intercalation may be followed by de-intercalation which involves the removal of the reagent. By the above process, there is provided crystalline modified kaolins having the following properties: (i) an increased interlayer space compared to corresponding kaolin group minerals; (ii) an increased susceptibility to intercalation by cations, anions or salts compared to corresponding kaolin group minerals; and (iii) an increased exfoliated morphology compared to corresponding kaolin group minerals. |
Identificador | |
Publicador |
US Patent and Trademark Office |
Relação |
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=modified.TI.&s2=kaolins.TI.&OS=TTL/modified+AND+TTL/kaolins&RS=TTL/modified+AND+TTL/kaolins Singh, B. & Mackinnon, I.D.R. (2000) Modified kaolins. WO1997015427. |
Fonte |
Institute for Future Environments |
Palavras-Chave | #030306 Synthesis of Materials #040306 Mineralogy and Crystallography #kaolinite #exfoliated layers #intercalation #divalent cations #cation exchange capacity |
Tipo |
Patent |