搜索结果: 1-3 共查到“有机化学 Ba”相关记录3条 . 查询时间(0.344 秒)
Synthesis and characterization of Ba/MCM-41
MCM-41 Ba hydrothermal synthesis
font style='font-size:12px;'>
2010/12/29
Mesoporous Ba/MCM-41 type materials (Ba/MCM-41) with high Ba/Si molar ratios between 0.025 and 0.1 were synthesized by direct hydrothermal synthesis. The samples were characterized by XRD, nitrogen ad...
Synthesis and characterization of Ba/MCM-41
MCM-41 Ba hydrothermal synthesis
font style='font-size:12px;'>
2010/12/20
Mesoporous Ba/MCM-41 type materials (Ba/MCM-41) with high Ba/Si molar ratios between 0.025 and 0.1 were synthesized by direct hydrothermal synthesis. The samples were characterized by XRD, nitrogen ad...
含呋喃环Schiff碱型大环化合物的合成及其与Ba^2+,Sr^2+配合行为
呋喃 环状化合物 席夫碱 大环化合物 合成 配合 模板 醛 钡 红外光谱学 核磁共振 元素分析 质谱法
font style='font-size:12px;'>
2007/12/17
摘要 利用Mn^2+，Ba^2+及Sr^2+作为模板离子，合成了一类新型的含呋喃环系 Schiff碱型大环化合物，如L^1和配合物L^2Ba(ClO4)2，L^3Ba(ClO4)2和L^4Ba (ClO4)2.L^2-L^4的Ba^2+配合物经与NaSO4水溶液反应解络，得到自由配体L^2， L^3和L^4，配体L^2和L^3分别与Sr^2+作用，得到配合物L^2Sr(ClO4)2和L^3Sr (...