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METHOD FOR PREPARING SYNTHETIC MINERAL PARTICLES
The invention relates to a method for preparing synthetic mineral particles with formula (AlyM1-y)2(SixGe1-x)2O5(OH)4, wherein M designates at least one trivalent metal selected from the group made up of gallium and the rare earths, which comprises the following steps: preparing a gel which is a precursor of said synthetic mineral particles by a co-precipitation reaction of at least one salt of metal selected among aluminium and M with at least one silicon source selected from the group made up of potassium metasilicate, sodium metasilicate, potassium metagermanate and sodium metagermanate, the molar ratio of (AlyM1-y) to (SixGe1-x) during the preparation of said precursor gel being equal to 1, at least one base being added during said co-precipitation reaction; and performing a solvothermal treatment of said precursor gel at a temperature of 250° C. to 600° C.
METHOD FOR PREPARING SYNTHETIC MINERAL PARTICLES
The invention relates to a method for preparing synthetic mineral particles with formula (AlyM1-y)2(SixGe1-x)2O5(OH)4, wherein M designates at least one trivalent metal selected from the group made up of gallium and the rare earths, which comprises the following steps: preparing a gel which is a precursor of said synthetic mineral particles by a co-precipitation reaction of at least one salt of metal selected among aluminium and M with at least one silicon source selected from the group made up of potassium metasilicate, sodium metasilicate, potassium metagermanate and sodium metagermanate, the molar ratio of (AlyM1-y) to (SixGe1-x) during the preparation of said precursor gel being equal to 1, at least one base being added during said co-precipitation reaction; and performing a solvothermal treatment of said precursor gel at a temperature of 250° C. to 600° C.
METHOD FOR PREPARING SYNTHETIC MINERAL PARTICLES
MARTIN FRANÇOIS (author) / LE ROUX CHRISTOPHE (author) / MICOUD PIERRE (author) / CLAVERIE MARIE (author) / AYMONIER CYRIL (author)
2018-09-27
Patent
Electronic Resource
English
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C04B
Kalk
,
LIME
/
C09C
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
,
Behandlung von anorganischen Stoffen, außer von faserigen Füllstoffen, zum Erhöhen ihrer pigmentierenden oder füllenden Eigenschaften
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2022