0181790 - UFCH-W 20030230 RIV CH eng J - Journal Article
Prokešová, Pavla - Mintova, S. - Čejka, Jiří - Bein, T.
Preparation of Nanosized Micro/Mesoporous Composites.
Materials Science & Engineering C-Materials for Biological Applications. Roč. 23, - (2003), s. 1001-1005. ISSN 0928-4931. E-ISSN 1873-0191
Institutional research plan: CEZ:AV0Z4040901
Keywords : mesoporous * microporous * composite
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.122, year: 2003

Micro/mesoporous composite material is prepared via reaction of zeolite Beta seeds solution and mesoporous precursor solution under hydrothermal conditions. The resulted micro/mesoporous composite contains nanoparticles with a mean radius of about 90 nm, while pure zeolite Beta and MCM-41 have particles with size of about 50 nm and 230 nm, respectively. The presence of highly crosslinked silicon framework walls and tetrahedrally coordinated aluminum in the framework structure are confirmed with solid-state 29Si and 27Al NMR investigations. Adsorption measurements show the presence of micropores, mesopores and high interparticle porosity due to the nanometer-sized particles in the micro/mesoporous composite. Various techniques such as dynamic light scattering, scanning electron.
Permanent Link: http://hdl.handle.net/11104/0078308