摘要
将含过氧铌一、三取代钨硅、钨磷过氧杂多阴离子利用离子交换法嵌入Zn2Al类水滑石中制得层柱化合物,利用XRD,IR,UV等方法对产物的结构进行了表征。结果表明在层柱化合物中过氧杂多阴离子仍然保持Keggin结构,并且过氧键没被破坏。层柱化合物在酯化反应中显示优良的催化性能。
The Keggin-strueture a- ( Bu4 N) s [ SiW11, ( NbO2 ) 039 ], ( Bu4 N ) 4 [ PW11 ( NbO2 ) O39 ], a- ( Bu4 N ) 7 [ SiW9 ( NbO2 ) 3 O37 ], (Bu4N) 6 [ PW9 ( NbO2 ) 3 O37 ] intercalated Zn2Al hydrotalcite-like compounds were prepared by means of direct ion-exchange reaction in aqueous solution and were characterized by XRD, IR and UV. The results indicated that Keggin structure of the peroxoheteropolyanions were remained and pcroxy-linkages were not broken down in pillared compounds. The pillared compounds showed good catalytic activity over the esterification.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2010年第4期426-430,共5页
Chemical Research and Application
基金
齐齐哈尔市科技局资助科学技术项目(GG06-25)资助
关键词
层柱化合物
过氧杂多阴离子
催化活性
pillared compound
peroxoheteropolyanions
catalytic activity