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一种确定固相反应机理函数的新方法——固态草酸镍(Ⅱ)二水合物脱水过程的非等温动力学 总被引:5,自引:0,他引:5
The dehydration of nickel(Ⅱ) oxalate dihydrate in solid state was investigated by TG-DTA techniques. On the basis of Coats-Redfern′s and Ozawa′s integral equations, the double extrapolate method was suggested, i.e.heating rate Φ and proportion weight loss of a sample α were extrapolated to zero, respectively. Using comparision EΦ→0 with Eα→0 the kinetic mechanism was concluded to be nuclear producing and growing process (n=1.5). The intergral function of the mechanism is [-ln(1-α)]1/1.5 and the corresponding kinetic parameters were determined. 相似文献
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一、原理本实验以电解KHSO_4饱和溶液来制备K_2~(?)S_2~(?)O_8晶体。电解时在两极上进行的电极反应为: 阴极 2H~+2e→H_2 阳极 2H_2~(?)O→O_2~-+4H~++4e~- 2SO_4~(2-)→S_2~(?)O_8~(2-)+2e 3H_2O→O_3~(?)+6H~++6e 在0℃时,以生成氧及过二硫酸根为主,温度升高,臭氧产率明显提高。 相似文献
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