煅烧温度对热分解工艺制备特定比表面积纳米氧化锌性能影响
发布时间：2018-07-26 10:55
【摘要】：以碳酸钠和硝酸锌为原料,采用高温煅烧热分解工艺制备纳米氧化锌。探讨了不同煅烧温度对产物比表面积的影响,研究了不同煅烧温度的氧化锌晶粒生长规律。通过分析氧化锌纯度和考察产物的微观结构,确定了符合GB/T19589-2004的3类纳米氧化锌最佳煅烧温度。研究表明,煅烧温度由300℃升高到700℃,可得到17.2~71.3 m~2/g的特定比表面积纳米氧化锌,氧化锌的含量由92.5%升高到98.9%,平均晶粒尺寸与煅烧温度的生长关系符合三次多项式关系。尤其是当煅烧温度为400℃时,可得到比表面积大于60m~2/g、粒径约为15~25 nm、类球状的纳米氧化锌。
[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，
本文编号：2145785
[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，
本文编号：2145785
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