Comparison of the thermal and hydrothermal stabilities of ethylene, ethylidene, phenylene and biphenylene bridged periodic mesoporous organosilicas

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• 作者：Dolores Esquivel^a ; C&#xe9 ; sar Jim&#xe9 ; nez-Sanchidri&#xe1 ; n^a ; Francisco J. Romero-Salguero ; ^a ; ^{qo2rosaf@uco.es}
• 关键词：PMOs ; Mesostructure ; Characterization ; Thermal stability ; Hydrothermal stability
• 刊名：Materials Letters
• 出版年：2011
• 出版时间：31 May 2011
• 年：2011
• 卷：65
• 期：10
• 页码：1460-1462
• 全文大小：367 K

文摘

The nature of the organic bridges in the framework of periodic mesoporous organosilicas (PMOs) has been shown to determine their thermal and hydrothermal stabilities. Thus, the aromatic bridges were decomposed at higher temperatures than the aliphatic ones but afterwards the mesostructure of the resulting silica remained intact. Except for the ethylidene bridged PMO, the rest of these materials have been resistant to aqueous media.