【摘要】：以碳酸鈉和硝酸鋅為原料,采用高溫煅燒熱分解工藝制備納米氧化鋅。探討了不同煅燒溫度對產(chǎn)物比表面積的影響,研究了不同煅燒溫度的氧化鋅晶粒生長規(guī)律。通過分析氧化鋅純度和考察產(chǎn)物的微觀結(jié)構(gòu),確定了符合GB/T19589-2004的3類納米氧化鋅最佳煅燒溫度。研究表明,煅燒溫度由300℃升高到700℃,可得到17.2~71.3 m~2/g的特定比表面積納米氧化鋅,氧化鋅的含量由92.5%升高到98.9%,平均晶粒尺寸與煅燒溫度的生長關(guān)系符合三次多項式關(guān)系。尤其是當煅燒溫度為400℃時,可得到比表面積大于60m~2/g、粒徑約為15~25 nm、類球狀的納米氧化鋅。
[Abstract]:Nanocrystalline zinc oxide was prepared from sodium carbonate and zinc nitrate by high temperature calcination process. The effect of different calcination temperature on the specific surface area of the product was discussed, and the grain growth law of zinc oxide with different calcination temperature was studied. By analyzing the purity of zinc oxide and the microstructure of the product, the optimum calcination temperature of three kinds of nanometer zinc oxide suitable for GB/T19589-2004 was determined. The results show that when the calcination temperature is raised from 300 鈩，

本文編號：2145785