亚硝酸与正丁醛和Np（Ⅵ）反应的动力学研究

STUDIES ON REACTION KINETKTICS OF NITROUS ACID WITH n-BUTYLALDEHYDE AND Ap(Ⅵ)

研究了（１）ＨＮＯ＿２与正丁醛的反应，得速率方程为：在２０℃、Ｉ＝２．０ｍｏｌ／ｋｇ时，速率常数ｋ＿１＝０．７６１￣２／（ｍｏｌ￣２·ｍｉｎ）；（２）在固定１．０ｍｏｌ／ｌＨＮＯ＿３条件下，ＨＮＯ＿２与Ｎｐ（Ⅵ）的反应，得速率方程为：在２０℃、Ｉ＝１．０ｍｏｌ／ｋｇ时，表观速率常数；（３）在固定１．０ｍｏｌ／ｌＨＮＯ＿３条件下，ＨＮＯ＿２、ｎ－Ｃ＿３Ｈ＿７ＣＨＯ、Ｎｐ（Ⅵ）共存时的反应，得速率方程为：在２０℃、Ｉ＝１．０ｍｏｌ／ｋｇ时，表观速率常数。结果说明，在ＨＮＯ＿２、ｎ－Ｃ＿３Ｈ＿７ＣＨＯ、Ｎｐ（Ⅵ）并存时，首先发生反应的是ＨＮＯ＿２与Ｎｎ（Ⅵ）。

The kinetics of the reaction of nitrous acd with n-butylaldehyde and neptunium(Ⅵ)is studied and the results in different reaction systems are obained:(1)in system of nitrous acid withn-butylaldehyde,when t=20℃ and ion strengh I=2.0mol/kg,the rate constant k_1=0.761￣2/(mol￣2·min );(2) in system of nitrous acid withNp(Ⅵ),when and I=1.0mol/kg,theapparent rate constant;(3)in system of nitrous acid and n-butylaldehydewith Np(Ⅵ),when and I=1.0mol/kg,the apparent rate constant .The results show that the nitrous acid has abigger reaction rate with Np(Ⅵ)than with n-butylaldehyde or n-butylaldehyde with Np(Ⅵ).