ADSORPTION STUDIES OF SBA-15 MESOPOROUS SILICA WITH UREIDOPROPYL SURFACE GROUPS
Ordered mesoporous organosilicas with channel-like structures (SBA15) was decorated with ureidopropyl ligands by co-condensation of ureidopropyltrimethoxysilane (UPS) and tetraethyl orthosilicate (TEOS) under high acid concentrations without addition of sodium chloride. It is shown that the co-condensation synthesis is suitable to introduce a relatively high concentration of functional ligands on the surface of channel-like mesostructures without losing their ordering, as confirmed by elemental analysis and powder X-ray diffraction (XRD). Nitrogen adsorption isotherms and pore size analysis demonstrated that the resulting mesoporous organosilicas are of high surface area, large pore volume and pore diameter in the range of 8-9 nm.
BOGNA E.GRABICKA DONALD J.KNOBLOCH RAFAL M.GRUDZIEN MIETEK JARONIEC
Department of Chemistry, Kent State University, Kent, OH 44242, USA
国际会议
天津
英文
189-198
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）