Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation Method

材料科学技术（英文）, 2012, 28(6): 572-576.

Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation Method

^1, , ^2, , ^3, , ^4,

1.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

2.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

3.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

4.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

关键词：介孔氧化铝 , 沉淀法 , BET比表面积 , 表征 , 反向 , 傅里叶变换红外光谱 , 扫描电子显微镜 , 合成

Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation Method

Y.S. Wu ^1, , J. Ma ^2, , F. Hu ^3, , M.C. Li ^4,

1.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

2.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

3.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

4.College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

Keywords： Mesoporous alumina , Reverse precipitation , Thermal stability ,

Mesoporous aluminaΥ-AI203 with high specific surface area and large pore volume is prepared by using a facile reverse precipitation method from sodium aluminate and nitric acid. The effects of terminal pH value, aging time and thermal stability on the characterization of Υ-Al2Oa are studied by means of X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, Brunauer-Emmett-Teller （BET） method and scanning electron microscopy （SEM）. The results show that Υ-A1203 with better properties can be obtained by changing the preparation parameters. High BET surface area of 340 m2/g can be obtained by calcining at 500℃ for 4 h with large pore volume of 0.90 cm3/g and average pore size of 7.6 nm. After calcining at 1000°, the surface area is still 86 m2//g and the pore volume is 0.37 cm31/g.

参考文献

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材料期刊网

Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation Method

Synthesis and Characterization of Mesoporous Alumina via a Reverse Precipitation Method

参考文献