多晶含铜MCM-41型纳米材料的合成研究

Synthesis and Characterization of Nano-polycrystalline Copper-containing MCM-41 Hexagonal Mesoporous Silica Sieve

将铜稳定、均匀分散在MCM 41型中孔材料的结构中 ,可充分发挥铜活性中心的催化活性。特定条件下 ,采用季铵盐类模板剂 ,在正硅酸乙酯 (TEOS)的水解聚沉时 ,向材料的结构中引入金属铜源 ,成功合成了分子自组装Cu MCM 41型分子筛。经XRD、FT IR、ED、HTEM、TG DTA分析 ,证实了样品属多晶态纳米材料 ,铜的骨架含量及脱模条件如焙烧温度、焙烧时间 ,对材料结构的稳定性及中孔有序度均有较大影响。

It is well known the catalytic activity of copper active center may be development increasingly while the copper element was uniform distributed in the structure of MCM 41 stability. In special conditions, copper containing MCM 41 mesoporous polycrystalline silica sieve(Cu MCM 41) was prepared with the template reagent of cetyltrimethylammonium bromide(CTMBr) and copper ion in the course of the hydrolytic coagulation of ethyl silicate(TEOS), and it was characterized by means of XRD?FT IR?ED?HTEM?TG TDA etc., meanwhile effect factors such as copper content? calcination temperature and calcination time of this material on the structure stability and the mesoporous degree were revealed.