钛酸锌的制备及其对高氯酸铵热分解的催化性能

Preparation of Nanometer ZnTiO_3 Powder and Its Catalytic Performance for Thermal Decomposition of Ammoniam Perchlorate

从20世纪60年代开始．钛酸锌（ZnO-TiO2）体系相图及特性的基础研究工作就开展起来了。钙钛矿型氧化物结构的ZnTiO3及基于ZnTiO3的一些ABO3型陶瓷固溶体材料，由于在超导体、催化剂、微波介电陶瓷以及电磁材料等领域有着重要用途．近年来已引起越来越多的关注。

ZnTiO3 nanocrystals were prepared by sol-gel method, using Zn（NO3）2 and Ti（C4H9O）4 in the topic. The as-prepared ZnTiO3 nanocrystals were characterized by XRD, FTIR and TEM, and the catalytic performance of ZnTiO3 nanocrystals of different contents for the ammonium perchlorate （AP）deeomposition was investigated by thermal analysis. The results indicate that ZnTiO3 with pure cube structure can be synthesized at 600 ℃ by this procedure,which was spheroid with panicle size of about 60-100 nm. The results expressed that the low temperature decomposition peaks of AP is advanced by 17 ℃ and the high temperature decomposition peaks of AP is advanced by 24 ℃ when adding 5% nanoparticle ZnTiO3 powder. The catalytic effects of ZnTiO3 powders on the high temperature decomposition of AP are less than that of nanometer metal powders, but all the micron metal powders decrease the low decomposition temperature of AP.