Preparation and Property of High Surface Area Alumina Resisting High TemperatureEffect of Barium Addition and Its Synergy with Lanthanum on the Thermal Stability of Alumina

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (5): 947.

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Preparation and Property of High Surface Area Alumina Resisting High TemperatureEffect of Barium Addition and Its Synergy with Lanthanum on the Thermal Stability of Alumina

GONG Mao-Chu¹, ZHANG Jie¹, LIN Zhi-En¹, XIE Chun-Ying¹, CHEN Yao-Qiang¹, ZHENG Lin², LI Xiao-Wei², XU Qing-Huai²

1. Faculty of Chemistry, Sichuan University, Chengdu 610064, China;
2. Catalyst Plant, Sichuan Chemical Works(Group), Chengdu 610301, China

Received:2001-03-28 Online:2002-05-24 Published:2002-05-24

Abstract

Abstract: High surface area alumina resisting high temperature was prepared by sol-gel method or sol-gel assisted impregnation method.The effects of barium addition and its synergy with lanthanum on the thermal stability were studied by XRDand surface analysis techniques.The results showed that when Ba was introduced by sol-gel method, Ba showed a little effect in improving the thermal stability of alumina.While 5.2% La introduced by sol-gel method and 2.0% Ba was introduced by impregnation method, because of the synergy between barium and lanthanum, the alumina maintained surface area of 112.90 m²/g after calcination at 1100 for 32 h.

Key words: Alumina, Lanthanum, Barium, Synergy, Thermal stability

CLC Number:

O643

TrendMD:

GONG Mao-Chu, ZHANG Jie, LIN Zhi-En, XIE Chun-Ying, CHEN Yao-Qiang, ZHENG Lin, LI Xiao-Wei, XU Qing-Huai. Preparation and Property of High Surface Area Alumina Resisting High TemperatureEffect of Barium Addition and Its Synergy with Lanthanum on the Thermal Stability of Alumina[J]. Chem. J. Chinese Universities, 2002, 23(5): 947.

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Preparation and Property of High Surface Area Alumina Resisting High TemperatureEffect of Barium Addition and Its Synergy with Lanthanum on the Thermal Stability of Alumina

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