US 11,904,268 B2
Preparation of new aldehyde and/or ketone traps and filters
Thu-Hoa Tran-Thi, Montrouge (FR); Ana Borta, Palaiseau (FR); Mickael Gineys, Crolles (FR); Marie-Pierre Som, Crolles (FR); and Frédéric Hammel, Crolles (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS—, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS—, Paris (FR)
Filed on Dec. 16, 2022, as Appl. No. 18/067,120.
Application 18/067,120 is a division of application No. 16/634,633, granted, now 11,571,650, previously published as PCT/FR2018/051951, filed on Jul. 27, 2018.
Claims priority of application No. 17 57251 (FR), filed on Jul. 28, 2017.
Prior Publication US 2023/0121377 A1, Apr. 20, 2023
Int. Cl. B01D 53/02 (2006.01); B01J 20/20 (2006.01); B01J 20/10 (2006.01); B01J 20/22 (2006.01); B01J 20/28 (2006.01)
CPC B01D 53/02 (2013.01) [B01J 20/20 (2013.01); B01D 2253/106 (2013.01); B01D 2253/306 (2013.01); B01D 2253/308 (2013.01); B01D 2258/06 (2013.01); B01J 20/103 (2013.01); B01J 20/22 (2013.01); B01J 20/28057 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A porous silicate sol-gel matrix comprising at least one aminic reagent selected from hydroxylamine, methylhydroxylamine, tert-butylhydroxylamine, methoxyamine, tetraethylenepentamine, and dicarboxylic acid dihydrazides, and salts thereof, the at least one aminic reagent being trapped in pores of the porous silicate sol-gel matrix,
wherein the porous silicate sol-gel matrix is prepared by a process comprising the steps of:
a) synthesizing a gel from tetramethoxysilane or a mixture of tetramethoxysilaneand another organosilicon precursor, selected from phenyltrimethoxysilane, phenyltriethoxysilane, fluoroalkyltrimethoxysilane, fluoroalkyltriethoxysilane, chloroalkylmethoxysilane, chloroalkylethoxysilane, alkyltrimethoxysilane, alkyltriethoxysilane, aminopropyltriethoxysilane and mixtures thereof, the synthesizing being carried out in an aqueous medium at a temperature of from 10 to 70° C. in the presence of at least one aminic reagent selected from hydroxylamine, methylhydroxylamine, tert-butylhydroxylamine, methoxyamine, tetraethylenepentamine, and dicarboxylic acid dihydrazides, and salts thereof, and
b) drying the gel obtained in step a) to give a porous silicate sol-gel matrix comprising at least one aminic reagent in which the at least one aminic reagent is trapped in the pores of the porous silicate sol-gel matrix,
wherein the porous silicate sol-gel matrix has a specific adsorption surface area of 15±2 m2·g−1 to 900±100 m2·g−1, and
wherein the at least one aminic reagent content of said porous silicate sol-gel matrix is from 0.8 mol·dm−3 to 8.0 mol·dm−3.