Ordered mesoporous silica-based materials with very high content of substituted heteroatoms from a pH-adjustor of urea

摘要：

A simple and effective method is used to introduce a large amount of heteroatoms into mesoporous walls of SBA-15 such as Si/Al ratio at near 1.0. This method is based on slow hydrolyzation of urea at the temperature of ~90 °C, which makes pH value of the solution change gradually. The results of XRD, N2 isothermals, TEM, SEM, NMR and element analysis indicate that all the samples have highly ordered mesostructures with very high content of substituted heteroatoms.

作者: Yunchen Du Sen Liu Yonglai Zhang Defeng Li Feng-Shou Xiao

作者单位: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012

会议类型: 国际会议

会议名称: 第15届国际分子筛大会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-12（万方平台首次上网日期，不代表论文的发表时间）