Stabilization of mesoporous nanocrystalline zirconia with Laponite  

作　　者：LIUXinmei YANZifeng LUGaoqing 

机构地区：[1]KeyLaboratoryforHeavyOilProcessing,KeyLaboratoryofCatalysis,CNPC,UniversityofPetroleum,Dongying257062,China/ARCCentreforFunctionalNanomaterials,UniversityofQueensland.QLD4072Australia [2]ARCCentreforFunctionalNanomaterials,UniversityofQueensland,QLD4072Australia

出　　处：《Chinese Science Bulletin》2005年第4期360-364,共5页

摘　　要：The mesoporous nanocrystalline zircoina was synthesized via solid state reaction——structure directing method in the presence of Laponite. The introduction of La- ponite renders the higher thermal stability and lamellar track to the zirconia. Laponite acts as inhibitor for crystal growth and also hard template for the mesostructure. The role of Laponite is attributed to the interaction between the zirconia precursors and the nano-platelets of Laponite via the bridge of hydrophilic segments of surfactant. It results in the formation of Zr-O-Mg-O-Si frameworks in the direction of Laponite layer with the condensation of frameworks dur- ing the calcination process, which contributes the higher stability and lamellar structure to the nano-sized zirconia samples.The mesoporous nanocrystalline zircoina was synthesized via solid statereaction--structure directing method in the presence of Laponite. The introduction of La-poniterenders the higher thermal stability and lamellar track to the zirconia. Laponite as inhibitor forcrystal growth and also hard template for the mesostructure. The role of Laponite is attributed tothe interaction between the zirconia precursors and the nano-platelets of Laponite via the bridge ofhydrophilic segments of surfactant. It results in the formation of Zr-O-Mg-O-Si frameworks in thedirection of Laponite layer with the condensation of frameworks during the calcination process,which contributes the higher stability and lamellar structure to the nano-sized zirconia samples.

关 键 词：氧化锆 微晶体 热稳定性 化学结构 分析方法 固相反应 

分 类 号：O614.412[理学—无机化学] O74[理学—化学]