Procédé de fabrication d'une silice lamellaire microporeuse de surface spécifique élevée, et silice obtenue

Procédé de fabrication d'une silice lamellaire microporeuse de surface spécifique élevée, et silice obtenue

A method for producing heat-stable microporous laminar silica with a high specific surface area. According to the method, (a) a phyllosilicate, particularly talcum, is mixed with an alkaline carbonate; (b) the mixture is heated to a temperature of 500-1400 DEG C; (c) the cooled reaction products are...

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Bibliographische Detailangaben
Hauptverfasser: EUGENE PAPIRER, RICHARD BAEZA, FREDERIC CLAUSS
Format: Patent
Sprache:fre
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Zusammenfassung:A method for producing heat-stable microporous laminar silica with a high specific surface area. According to the method, (a) a phyllosilicate, particularly talcum, is mixed with an alkaline carbonate; (b) the mixture is heated to a temperature of 500-1400 DEG C; (c) the cooled reaction products are subjected to an acid attack; and (d) the resulting solid silica is separated. This silica has a stable macroscopic and microcospic structure up to least 600 DEG C and a specific surface area over 450 m /g.