摘要
采用铝酸钠-硝酸铝法制备拟薄水铝石。研究了制备过程中影响拟薄水铝石胶溶指数的工艺条件如中和温度、中和pH值以及老化时间等,结果表明,当中和温度为50~60℃、 pH值在6.0~7.5以及老化时间控制在0.5~1 h之内可以得到胶溶指数高于85%的拟薄水铝石。通过用不同胶溶指数的拟薄水铝石制成氧化铝载体表明,随着拟薄水铝石胶溶指数的变大,载体的强度增加。
Using the method of sodium aluminate -aluminum nitrate to prepare pseudo -boehmite , the factors which impacted dispersion index of pseudo -boehmite , such as the reaction temperature , precipitation pH value and aging time were analyzed.The results showed that as the reaction temperature at 50~60 ℃, precipitation pH value of about 6.0~7.5 and aging time of 0.5~1 h, pseudo-boehmite of dispersion index larger than 85%can be prepared.Using pseudo-boehmite of different dispersion index to make the alumina carrier , it was found that as the dispersion index of pseudo -boehmite bigger , the crush strength of alumina made by it was harder.
出处
《广州化工》
CAS
2014年第15期122-124,共3页
GuangZhou Chemical Industry
关键词
拟薄水铝石
胶溶指数
载体
压碎强度
pseudo-boehmite
dispersion index
support
crush strength