申请人:——
公开号:US20040122250A1
公开(公告)日:2004-06-24
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—R
1
—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; R
1
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(R
6
)—C(═O)— or N(R
6
), 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—R
1
—SiO
1,5
9 SiO
2
, whereon is then anchored an equivalent of an organic compound, represented by (&Dgr;)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): (&Dgr;)N—R—SiO
1,5
9 SiO
2
, 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.