EP 4214177 A1 20230726 - MONOLITHIC NANOPARTICLE METAL OXIDES WITH MULTISCALE POROSITY

Title (en)

MONOLITHIC NANOPARTICLE METAL OXIDES WITH MULTISCALE POROSITY

Title (de)

MONOLITHISCHE NANOPARTIKELMETALLOXIDE MIT MULTISKALIGER POROSITÄT

Title (fr)

METALLO-OXYDES NANOPARTICULAIRES MONOLITHIQUES A POROSITE MULTI-ECHELLES

Publication

EP 4214177 A1 20230726 (FR)

Application

EP 21777536 A 20210916

Priority

FR 2009497 A 20200918
EP 2021075529 W 20210916

Abstract (en)

[origin: WO2022058449A1] Disclosed is a method for preparing a monolith with multiscale porosity, the monolith comprising a silicon oxide matrix, and nanoparticles of a metal oxide M, M representing a metal or a metalloid chosen from the following metals and metalloids: Cr, Co, Mn, Ni, Ce, V, Y, W, Nb, Mo, Fe, Zn, Ta, Sn, Cd, Cu and In, the method comprising a step of emulsifying an oily phase in a homogeneous acidic aqueous phase, the aqueous phase comprising a cationic surfactant, at least one metal oxide precursor metal salt and one silica precursor, a step of polycondensation, a step of eliminating the oily phase by treatment with dichloromethane, and calcination taking place in two steps.

IPC 8 full level

C04B 35/14 (2006.01); B01J 35/10 (2006.01); C01B 37/02 (2006.01); C04B 35/16 (2006.01); C04B 38/00 (2006.01)

CPC (source: EP)

C-Set (source: EP)

C04B 38/0045 + C04B 35/14 + C04B 38/0054

Citation (search report)

See references of WO 2022058449A1

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

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

WO 2022058449 A1 20220324; EP 4214177 A1 20230726; FR 3114317 A1 20220325; FR 3114317 B1 20220923

DOCDB simple family (application)

EP 2021075529 W 20210916; EP 21777536 A 20210916; FR 2009497 A 20200918