EP 3164208 A1 20170510 - PROCESS FOR THE SYNTHESIS OF HYBRID ALLOPHANE
Title (en)
PROCESS FOR THE SYNTHESIS OF HYBRID ALLOPHANE
Title (de)
VERFAHREN ZUR SYNTHESE VON HYBRIDEM ALLOPHAN
Title (fr)
PROCEDE DE SYNTHESE D'ALLOPHANE HYBRIDE
Publication
Application
Priority
- FR 1456382 A 20140703
- EP 2015065128 W 20150702
Abstract (en)
[origin: WO2016001373A1] The present invention relates to a process for preparing hollow particles of spherically shaped hybrid aluminosilicates of allophane type with a core, comprising at least the steps consisting in: (a) providing, at ambient temperature, an aqueous medium containing at least one aluminium precursor and one silicon alkoxide in an Al/Si mole ratio ranging from 1 to 3, (b) carrying out, with stirring, the alkaline hydrolysis of said medium with gradual addition of at least one base in a base/Al mole ratio of 2.3 to 3, (c) at the end of the addition of all of said base, maintaining the stirring at ambient temperature until said medium is obtained in the clear state and (d) heating the solution obtained at a temperature ranging from 50 to 150°C, for 2 to 8 days, characterized in that all of steps (a) to (d) are carried out in a reactor consisting of a material which is chemically inert with respect to the reagents and to said expected aluminosilicate.
IPC 8 full level
B01J 20/16 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01); C01B 33/26 (2006.01)
CPC (source: EP US)
B01J 20/16 (2013.01 - EP US); B01J 20/223 (2013.01 - EP US); B01J 20/28019 (2013.01 - EP US); B01J 20/28021 (2013.01 - EP US); B01J 20/3078 (2013.01 - US); B01J 20/3085 (2013.01 - EP US); B01J 20/3246 (2013.01 - EP US); C01B 33/26 (2013.01 - EP); C01B 33/26 (2013.01 - US); C01P 2004/34 (2013.01 - EP)
Citation (search report)
See references of WO 2016001373A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2016001373 A1 20160107; EP 3164208 A1 20170510; FR 3023181 A1 20160108; FR 3023181 B1 20190712; US 10512892 B2 20191224; US 2017128909 A1 20170511
DOCDB simple family (application)
EP 2015065128 W 20150702; EP 15734346 A 20150702; FR 1456382 A 20140703; US 201515323512 A 20150702