摘要
以硝酸铝、甘氨酸为原料,采用燃烧合成法制备γ-Al2O3粉体,利用XRD,SEM,TG-DTA等手段对所制备的γ-Al2O3粉体进行表征,考察反应溶液pH值、硝酸铝与甘氨酸配比、煅烧温度对纳米γ-Al2O3粉体粒径和纯度的影响。结果表明,制备γ-Al2O3粉体的最佳工艺条件为:硝酸铝与甘氨酸物质的量比为3∶5,pH值为2,煅烧温度为750℃。在此条件下可制备出高纯度蓬松状γ-Al2O3粉体。
Nanometer γ-Al2O3 powder was prepared by combustion synthesis method using aluminum nitrate and glycine as raw materials. The prepared γ-Al2O3 powder was characterized by means of X-ray diffraction （XRD）,scanning electron microscope （SEM） and thermogravimetric-differential ther- mal analysis （TG-DTA）. The influence of solution pH value,raw materials molar ratio and calcination temperature on the particle size, purity and morphology of γ-Al2O3 powder were investigated. Under the optimal preparation conditions of aluminum nitrate/glycine molar ratio of 3 - 5,a solution pH value of 2 and a calcination temperature of 750 ℃ ,fluffy γ-Al2O3 powder with high purity could be obtained.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2012年第1期54-57,共4页
Petroleum Processing and Petrochemicals
基金
辽宁省自然科学基金资助项目(201102119)
