Generalized Homogeneous Precipitation Method for Precisely Controlled Synthesis of Mesoporous Silicas

0181637 - UFCH-W 20030058 RIV NL eng C - Konferenční příspěvek (zahraniční konf.)
Rathouský, Jiří - Zukal, Arnošt
Generalized Homogeneous Precipitation Method for Precisely Controlled Synthesis of Mesoporous Silicas.
International Mesostructured Materials Symposium. Amsterdam: Elsevier, 2003, s. 185-188. Studies in Surface Science and Catalysis., 146.
[International Mesostructured Materials Symposium /3./. Jižní Korea (KR), 08.07.2002-11.07.2002]
Výzkumný záměr: CEZ:AV0Z4040901
Klíčová slova: mesoporous silicas * controlled synthesis
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie

A simple synthesis pathway has been developed which affords organized mesoporous silicas using inexpensive sodium metasilicate as the silica source and nonionic surfactants as the structure-directing agents. Due to their precipitation from an alkaline medium, these materials exhibit markedly different structure features from those prepared in an acid medium, being non-microporous. The precipitation should be carried out at strictly quiescent conditions, as stirring leads to an inevitable decrease in the pore ordering.
Trvalý link: http://hdl.handle.net/11104/0078172