| 摘要 |
The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality, comprising hydrolysis and condensation polymerisation of at least a compound of formula (I): Z-R1-Si(OR)(OR')(OR''), wherein: Z represents either an atom selected among chlorine, bromine or iodine atoms, or an amino or phosphino group; R, R' and R'', independently of one another, represent an alkyl radical comprising on to four carbon atoms; R1 represents a divalent radical derived from an aliphatic hydrocarbon chain comprising 1 to 30 carbon atoms, wherein are optionally interspersed one or several arylene; -O-, -S-, -O-C(=O), -N(R6)-C(=O)- or N(R6), with at least an alkaline or alkaline-earth silicate of (II) in a mol ratio (I)/(II)=1/9 in the presence of at least a non-ionic surfactant in micellar concentration, to form a mesoporous silica represented by formula (III): Z-R1-SiO1,5 9 SiO2, whereon is then anchored an equivalent of an organic compound, represented by (Delta)N-H, comprising at least a -NH- group capable of reacting with the function Z, to form a functionalised mesoporous silica represented by formula (IV): (Delta)N-R-SiO1,5 9 SiO2, which is optionally complexed with a metallic carbon to form an organometallic complex (V). The invention also concerns the products of formulae (IV) and (V) and their use for separating gases.
|
