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Tetramethylguanidine covalently bonded onto silica gel as catalyst for the addi...
De Oliveira,Edimar; Torres,Jocilene D.; Silva,Carlos C.; Luz,Afrânio A. M.; Bakuzis,Peter; Prado,Alexandre G. S.A catalyst based on silica chemically modified with tetramethylguanidine (TMG) was synthesized by the co-condensation of tetraethylorthosilicate (TEOS) with a new silylant agent derived from the reaction between the TMG molecule and (3-chloropropyl)trimethoxysilane. A neutral n-dodecylamine template was used to organize the polymerization of the inorganic-organic catalyst. Thermogravimetry showed that the numbe...
Date: 2006
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Origin: Oasisbr