Hierarchical hybrid organic-inorganic materials with tunable textural properties obtained using zeolitic-layered precursor.
Novel layered zeolitic organic-inorganic materials have been synthesized using a two-dimensional zeolite precursor IPC-1P prepared by a top-down approach from zeolite UTL. The formation of porous materials containing organic linkers or polyhedral oligomeric siloxane covalently bonded to zeolite layers in the interlayer space was confirmed by a variety of characterization techniques (N2/Ar sorption analysis, XRD, (29)Si and (13)C NMR, TEM). The organic-inorganic porous hybrids obtained by intercalation with silsesquioxane posessed layered morphology and contained large crystalline domains. The hybrids exhibited mesoporous or hierarchical micro-/mesoporous systems, stable up to 350 °C. Textural properties of the formed zeolitic organic-inorganic materials can be controlled by varying the linker or synthetic conditions over a broad range. Surface areas and pore volumes of synthesized hybrids significantly exceed those for parent zeolite UTL and corresponding swollen material; the amount of micropores increased with increasing rigidity and size of the organic linker in the order biphenyl > phenylene > ethanediyl.
J. Heyrovský Institute of Physical Chemistry , Academy of Sciences of Czech Republic , v.v.i. Dolejškova 3, 182 23 Prague 8, Czech Republic.
Maksym
M
Opanasenko
Wallace O'Neil
WO
Parker
Mariya
M
Shamzhy
Erica
E
Montanari
Michela
M
Bellettato
Michal
M
Mazur
Roberto
R
Millini
Jiří
J
Čejka