0181213 - UFCH-W 20010128 RIV NL eng J - Journal Article
Dědeček, Jiří - Žilková, Naděžda - Čejka, Jiří
Experimental Study of the Effect of Si/Al Composition on the Aluminum Distribution in (Al)MCM-41.
Microporous and Mesoporous Materials. 44-45, 1/3 (2001), s. 259-266. ISSN 1387-1811. E-ISSN 1873-3093
R&D Projects: GA AV ČR IAA4040001; GA AV ČR IBS4040017
Institutional research plan: CEZ:AV0Z4040901
Keywords : (Al)MCM-41 * Al distribution * VIS spectroscopy
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.497, year: 2001

The effect of framework Al content on the number of framework Al atoms on the surface of (Al)MCM-41 channels and the distribution of these Al atoms among single Al atoms and various Al-Si-Al and pairs was investigated. Number of single Al atoms increases with framework Al content and overcome 50% of surface Al atoms for Si/Al~11. The Al-Si1,2-Al pairs are present in two cationic sites and also the distribution of Al pairs into these sites depends on the framework Al content.
Permanent Link: http://hdl.handle.net/11104/0077799