Synthesis of Plugged Mesoporous SBA-15-type Silicas from Sodium Silicate
Nonionic triblock copolymers (P 123) templated SBA-15 silicas since 1998 have attracted great interest due to their larger pores,thicker pore walls,etc.Following that,extensive works were devoted to tailor the textural and morphological properties of SBA-15s,among which the SBA-15 with plugs formed in mesoschannels,called plugged hexagonal templated silica (PHTS),was one of famous examples.This work presents a simple but effective method to prepare PHTS-type SBA-15s based on the partitioned cooperative self-assembly process using P123 as template and cheap sodium silicate as silica precursor,which is in contrast with most other works using TEOS as silica precursor.Various techniques,including XRD,TEM and N2 sorption,have been employed to characterize the resultant PHTS-type SBA-15s.For this method,synthetic parameters,especially the interval time and aging temperatures,were found to have great influence on the plugged mesostructures.
Mesoporous Silica SBA-15 Plug
Weijun Shan Wei Wang Hong Qiang Ru
School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China;College of Chemistr School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
568-574
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）