Facile Synthesis of Mesoporous Si-containing γ-Al2O3 Nanofiber with Enhanced Thermal Stability  

作　　者：HU Fang WANG Yamin LAI Xiaoyong WU Yusheng DU Fei WANG Chunzhong 

机构地区：[1]School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P. R. China [2]State Key Laboratory Cultivation Base of Natural Gas Conversion, Ningxia University, Yinchuan 750021, P. R. China [3]Key Laboratory of Advanced Batteries Physics and Technology, Ministry of Education, College of Physics, Jilin University, Changchun 130012, P. R. China

出　　处：《Chemical Research in Chinese Universities》2015年第1期156-159,共4页高等学校化学研究（英文版）

摘　　要：Mesoporous γ-Al2O3 nanofiber was prepared via a simple reverse precipitation route using Si-containing Al（OH）3 and HNO3 as raw materials. The resultant Si-containing mesoporous γ-Al2O3 nanofiber exhibited high surface area of 320 m^2/g, large pore volume of 1.17 cm^3/g and large pore size of 10.5 nm. The introduction of Si element remarkably enhanced the thermal stability of mesoporous γ-Al2O3. The as-prepared nanofiber could maintain relative high surface area（110 m^2/g） and pore volume（0.73 cm^3/g） up to 1100 ℃. The effects of various experimental conditions, such as pH value, reaction temperature and aging temperature on the structural properties of the mesoporous γ-Al2O3 were also investigated.Mesoporous γ-Al2O3 nanofiber was prepared via a simple reverse precipitation route using Si-containing Al（OH）3 and HNO3 as raw materials. The resultant Si-containing mesoporous γ-Al2O3 nanofiber exhibited high surface area of 320 m^2/g, large pore volume of 1.17 cm^3/g and large pore size of 10.5 nm. The introduction of Si element remarkably enhanced the thermal stability of mesoporous γ-Al2O3. The as-prepared nanofiber could maintain relative high surface area（110 m^2/g） and pore volume（0.73 cm^3/g） up to 1100 ℃. The effects of various experimental conditions, such as pH value, reaction temperature and aging temperature on the structural properties of the mesoporous γ-Al2O3 were also investigated.

关 键 词：Mesoporous γ-Al2O3 Reverse precipitation Thermal stability NANOFIBER 

分 类 号：TQ133.1[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]