铈杂多配离子层柱水滑石ZnAl-Ce(PMoV)_2的合成、表征及催化性能  

Synthesis,characterization and catalytic properties of layered double hydroxide pillared with Ce heteropoly complex ion

作　　者：陈泽宇[1] 蒋维[2] 李朝阳[1] 

机构地区：[1]西双版纳出入境检验检疫局,云南景洪666100 [2]茂名学院应用化学系,广东茂名525000

出　　处：《云南大学学报（自然科学版）》2006年第S1期267-273,共7页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：以十四酸根阴离子柱撑Zn-Al水滑石Zn0.77Al0.22(OH)2.0.22C13H27COO.0.81H2O(记为ZnAl-14A)为预撑前体,在水溶液中用离子交换法将以2:17缺位杂多酸根离子(P2Mo16VO61)11-(记为P Mo V)为配体的稀土杂多配阴离子Ce(P2Mo16VO61)219-(记为Ce(PMoV)2)插层组装到水滑石层板间,合成了1种具有大的层间距(3.37 nm)的超分子插层材料Zn0.77Al0.23(OH)2.0.0105[Ce(P1.9Mo15.7V1.1O61)2].0.029C13H27COO.0.87H2O(记为ZnAl-Ce(PMoV)2).用ICP,IR,XRD和DTA对产物的组成和结构进行了表征.结果表明,该产物中Ce(PMoV)2配阴离子沿其长轴垂直于层板的方向分布于水滑石层间;产物具有规整的层状结构、良好的结晶度和热稳定性;产物对乙酸与正丁醇的酯化反应,二甘醇的脱水-环化反应和H2O2氧化环已烷的反应有良好的催化性能,且易于回收重复使用.Heteropoly complex anion,(abbreviated as Ce(P_2Mo_(16)VO_(61))^(-10)_2 was intercalated into the interlayer space of ZnAl type layered double hydroxide through Zn_(0.77)Al_(0.22)(OH)_2·0.22C_(13)H_(27)COO·0.81H_2O(abbreviated as ZnAl-14A) precursor in an aqueous solution by ion exchange and the pillared layered compound,Zn_(0.77)Al_(0.23)(OH)_2·0.0105[Ce(P_(1.9)Mo_(15.7)V_(1.1)O_(61))_2]·0.029C_(13)H_(27)COO·0.87H_2O(abbreviated as ZnAl-Ce(PMoV_2)) with higher interlayer space(3.37?nm) was obtained.The comp...

关 键 词：铈的杂多配离子 插层水滑石 合成 催化性能 

分 类 号：O643.36[理学—物理化学]