溶胶-凝胶微波加热合成Ca_(2.7)La_(0.3)Co_4O_9前驱粉  

Synthesis of Ca_(2.7)La_(0.3)Co_4O_9 Precursor Powders by Sol-gel and Microwace Heating Method

作　　者：李燕 张丽鹏[2] 于先进[2] 葛志伟[2] 

机构地区：[1]山东三林集团,淄博255000 [2]山东理工大学化学工程学院,淄博255049

出　　处：《现代技术陶瓷》2010年第2期8-10,共3页Advanced Ceramics

基　　金：国家自然科学基金(50374045);山东省自然科学基金(Y2007F60);山东省高等学校科技计划项目(J09LB59);山东省中青年科学家奖励基金(BS2009NJ007);山东省淄博市科学技术发展计划项目(2008)

摘　　要：以硝酸钙、硝酸钴、硝酸镧和柠檬酸等为原料,用溶胶-凝胶法制备出凝胶,在100℃下烘干,然后用微波炉加热,合成了Ca2.7La0.3Co4O9前驱粉体。讨论了微波合成参数对粉体晶相和晶粒度的影响。用X射线衍射仪(XRD)、扫描电子显微镜(SEM)对制备的粉体进行了测试。结果表明,溶胶-凝胶结合微波加热法可以在较短的时间内制得Ca2.7La0.3Co4O9粉体,且晶形发育比常规加热更完善。微波高火加热20min,可得到纯相的Ca2.7La0.3Co4O9前驱粉。In this paper,Ca2.7La0.3Co4O9 powders were prepared by microwave heating method.The gel was prepared by sol-gel using calcium nitrate,cobalt nitrate,lanthanum nitrate and citric acid as raw materials.The gel was dried at 100 ℃.The influence of microwave synthesis parameters on the crystallite phase and crystallite size of Ca2.7La0.3Co4O9 powders were studied.The powders were characterized by X-ray diffraction（XRD）and scanning electron microscopy（SEM）.The results showed that pure phase Ca2.7La0.3Co4O9 precursor powders are prepared by microwave heating for 20 min in high-fire,and the crystal grains of the powders grow ideally.

关 键 词：Ca2.7La0.3Co4O9 溶胶-凝胶 微波加热 

分 类 号：TQ174.758[化学工程—陶瓷工业]