排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
顺—反异构体的研究,在配合物化学中占有重要的地位。二水二草酸合铬酸钾这一配合物顺、反异构体的制备和异构化现象的研究已有报导,但多限于水溶液体系。也有关于该配合物热稳定性和热分解动力学研究的报导但对固相中该配合物异构体转变的研究尚未见报导。本文利用DTA方法,对二水二草酸合铬酸钾顺、反异构体的制备以及固相中异 相似文献
2.
3.
双外推法研究FeC2O4·2H2O脱水过程的动力学机理 总被引:2,自引:1,他引:2
On the basis of the Coats-Redfern's integral equation and Ozawa's equation. the probable mechanism of the dehydration process of FeC2O4 2H2O was investigated using double extrapolation. The dehydration Process includes two steps. The first step is the nuclear producing and growing process(n=1.5), G(α)= [ln(1-α)]1/1.5; the second step is a two-dimensional diffusion process, G(α)=(1-α)ln(1-α)+a: the corresponding kinetic parameters were determined. 相似文献
4.
5.
6.
7.
8.
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
9.
用双外推法讨论固态草酸钴(Ⅱ)二水合物脱水过程的动力学机理 总被引:5,自引:0,他引:5
采用TG-DTA技术,
在Coats-Redfern积分式和Ozawa公式基础上, 运用双外推法对固态草酸钴(Ⅱ)二水合物脱水过程进行分段处理,
确定了各段最可能机理, 并求得相应动力学参数. 相似文献
10.
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
1