气氛对Al-MCM-41热稳定性的影响

无机材料学报

气氛对Al-MCM-41热稳定性的影响

张存满^1,2; 徐政¹; 刘茜²; 万克树²

1. 同济大学材料科学与工程学院, 上海 200092; 2. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050

收稿日期:2002-07-10 修回日期:2002-08-05 出版日期:2003-07-20 网络出版日期:2003-07-20

Effects of Atmosphere on Thermal Stability of Al-MCM-41

ZHANG Cun-Man^1,2; XU Zheng¹; LIU Qian²; WAN Ke-Shu²

1.Department of Material Science and Engineering; Tongji University; Shanghai 200092; China; 2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute; of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:2002-07-10 Revised:2002-08-05 Published:2003-07-20 Online:2003-07-20

摘要/Abstract

摘要： 研究了在不同气氛(氧气、氮气和氨气)条件下Al-MCM-41的热稳定性能,通过比表面积、孔径分布及X射线衍射对Al-MCM-41热稳定性的研究表明:在不同气氛条件下,Al-MCM-41的热稳定性有很大的差异,在氨气或氮气气氛下,处理温度高达1010℃条件下,Al-MCM-41仍然具有良好的介孔结构,但在氧气中介孔结构热稳定温度不超过900℃。

关键词: Al-MCM-41, 热稳定性, 气氛

Abstract: The effects of atmosphere (O₂, N₂ and NH₃) on the thermal stability of Al-MCM-41 were investigated for the first time. The thermal stability, characterized by BET surface area, pore diameter distribution and XRD patterns, showed greatly difference in samples treated under different atmosphere conditions. The samples treated in NH₃ or N₂ remained typical mesoporous structure up to 1010℃, but the mesoporous structure in the samples treated in O₂ collapsed at temperatures larger than 900℃.

Key words: Al-MCM-41, thermal stability, atmosphere

中图分类号:

TB383

张存满,徐政,刘茜,万克树. 气氛对Al-MCM-41热稳定性的影响[J]. 无机材料学报.

ZHANG Cun-Man,XU Zheng,LIU Qian,WAN Ke-Shu. Effects of Atmosphere on Thermal Stability of Al-MCM-41[J]. Journal of Inorganic Materials.

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