Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (1): 156-159.doi: 10.1007/s40242-015-4322-0

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Facile Synthesis of Mesoporous Si-containing γ-Al2O3Nanofiber with Enhanced Thermal Stability

HU Fang1,3, WANG Yamin1, LAI Xiaoyong2, WU Yusheng1, DU Fei3, WANG Chunzhong3   

  1. 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
  • Received:2014-08-28 Revised:2014-10-16 Online:2015-02-01 Published:2014-11-17
  • Contact: WANG Chunzhong, E-mail:wcz@jlu.edu.cn E-mail:wcz@jlu.edu.cn
  • Supported by:

    Supported by the National Science and Technology Support Program of China(No.51362024), the Project of the Educational Department of Liaoning Province of China(No.201124124), the Program of Liaoning Excellent Talents in University, China(No. LR2014004) and the Development Program of Science and Technology of Jilin Province, China(No.20120310).

Abstract:

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 m2/g, large pore volume of 1.17 cm3/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 m2/g) and pore volume(0.73 cm3/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.

Key words: Mesoporous γ-Al2O3, Reverse precipitation, Thermal stability, Nanofiber