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《Journal of Yunnan University(Natural Sciences Edition)》 2013-06
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A study on thermal stability of mesoporous alumina prepared by pseudo-boehmite

BIAN Long-chun;ZHAO Yun-kun;JIANG Feng-zhi;YUAN Bo;WANG Ji-liang;School of Chemical Science and Technology,Yunnan University;Kunming Sino-Platinum Metals Catalyst Co. ,Ltd.;  
In this paper,we've explored and worked out a quick synthesis approach to forming mesoporous alumina by using Pseudo- boehmite. In addition,the process of adding lanthanum oxide and barium oxide into mesoporous alumina on the effects of the thermal stability of the mesoporous alumina has been investigated. The as-synthesized samples have been characterized by BET and XRD. The analysis results show that the BET of mesoporous alumina prepared reaches 91 m2/ g after aging at 1 050 ℃. While the BET of modified samples by rare earth and alkaline- earth element are 127 m2/ g and 109 m2/ g respectively. In the light of the result of XRD,the formation of LaAlO4and BaAl2O4has prevented mesoporous alumina from sintering and transforming into α- alumina at 1 050 ℃.
【Fund】: 云南大学理工科校级科研资助项目(2011YB11)
【CateGory Index】: TQ133.1
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