摘要
采用水热合成与离子交换方法合成了不同过渡金属三取代的Ｋｅｇｇｉｎ结构杂多阴离子ＧａＷ９Ｍ３（Ｍ＝Ｆｅ３＋、Ｃｕ２＋、Ｃｏ２＋、Ｚｎ２＋）柱撑粘土．元素分析、ＸＲＤ和ＩＲ对产物的组成和结构测试表明，杂多阴离子被嵌入粘土层间后仍保持原有的Ｋｅｇｇｉｎ结构，而粘土的层间距却从０．８９ｎｍ增大到１．４６±０．０１ｎｍ．ＥＳＲ结果则表明ＧａＷ９Ｃｕ３进入层间后，由于层板的影响，ＣｕＯ６八面体中的ＣｕＯ键的离子性有所增强．
The tungstogallic heteropolyanions trisubstituted with transition metal GaW 9M 3(M=Fe 3+ ,Cu 2+ ,Co 2+ ,Zn 2+ )have been incorporated into the interlayer of ZnAlNO 3 type anionic clay by means of hydrothermal ionexchange. The measurement results of elementary analysis, XRD and IR showed that Keggin structure of the intercalated heteropolyanions was kept perflect and the new pillared anion caly with basal spacing of 1.46± 0.01 nm was obtained. ESR indicated that because of influence of layered region polar of Cu—O bond in CuO 6 Octahedron was heightened in a degree after GaW 9M 3 were intercalated into the interlayer. The new pillared compounds were found to be catalyticlly efficient for esterification reaction of phthalic anhydride with 2ethyl hexanol.
出处
《湖北大学学报（自然科学版）》
CAS
1997年第1期60-65,共6页
Journal of Hubei University：Natural Science
基金
国家自然科学基金资助课题
湖北省教委基金
关键词
钨镓杂多阴离子
柱撑粘土
催化活性
合成
Tungstogallicate
Intercalation
Pillared hydrotalcite
Catalytic activity
