在某些氨基化合物存在下六价铬的还原
Reduction of Cr(VI) in presence of some amino compounds.
作者信息
El-Batouti Mervette
机构信息
Chemistry Department, Faculty of Science, Alexandria, Egypt.
出版信息
J Colloid Interface Sci. 2004 Nov 1;279(1):150-7. doi: 10.1016/j.jcis.2004.06.046.
The rate of reduction of Cr(VI) to Cr(III) in 0.05 M K2Cr2O7 has been studied and was found to be first order. The rate of reaction was measured in the absence of amino compounds and in the presence of o-nitroaniline, p-nitroaniline, m-toulidine, p-chloroaniline, and o-bromoaniline at four different temperatures. The rate of reaction was found to decrease with the addition of amines. Thermodynamic parameters DeltaG*, DeltaH*, and DeltaS* were calculated from the study.
研究了在0.05M重铬酸钾中六价铬还原为三价铬的速率，发现其为一级反应。在四种不同温度下，分别在不存在氨基化合物以及存在邻硝基苯胺、对硝基苯胺、间甲苯胺、对氯苯胺和邻溴苯胺的情况下测量反应速率。发现加入胺后反应速率降低。通过该研究计算了热力学参数ΔG*、ΔH和ΔS。
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