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《Chinese Journal of Catalysis》 2004-05
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Preparation of High-Surface-Area γ-Alumina by Assistance of Sucrose

WANG Chunming, ZHAO Biying*, ZHU Yuexiang, XIE Youchang(State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China)  
The preparation of alumina with large surface area, certain phase and porosimetry has always been one of important researches. A new method using much less sucrose (the molar ratio of sucrose to Al 3+=0 5) was developed to prepare γ-Al 2O 3 with large surface area and high thermal stability. Firstly,ammonium hydroxide was dropped to aqueous solution of aluminum nitrate and sucrose. The resulted precipitate in suspension was heated until a homogeneous gel was obtained. Then the gel was dehydrated at 110 ℃ to get a fluffy black precursor. Finally, γ-Al 2O 3 with A=345 m2/g was prepared by calcining the precursor at 600 ℃ for 24 h. The precursor and the obtained γ-Al 2O 3 were characterized by DTA-TG, N 2 adsorption-desorption isotherms, XRD and TEM. According to the dispersion behaviors of organic compounds on supports, the related mechanism was discussed.
【Fund】: 国家自然科学基金资助项目 (2 0 173 0 0 2 );; 国家重点基础研究发展规划项目 (G2 0 0 0 0 775 0 3 )
【CateGory Index】: O643
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【References】
Chinese Journal Full-text Database 2 Hits
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1 WANG Chunming, ZHAO Biying *, XIE Youchang(State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China);Advances in the Studies of Spontaneous Monolayer Dispersion of Oxides and Salts on Supports[J];Chinese Journal of Catalysis;2003-06
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【Co-citations】
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