Hydroxylamine derivative in Purex process Part VIII. The kinetics and mechanism of the redox reaction of N-methylhydroxylamine and vanadium(V)

Anyun Zhang; Kai Li; Jingxin Hu

doi:10.1023/b:jrnc.0000034863.27788.e4

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 261: Issue 2

Hydroxylamine derivative in Purex process Part VIII. The kinetics and mechanism of the redox reaction of N-methylhydroxylamine and vanadium(V)

Authors:

Anyun Zhang

Anyun Zhang

Search for other papers by Anyun Zhang in
Current site
Google Scholar
PubMed

Kai Li

Kai Li Shaanxi Normal University Department of Chemistry Xi'an 710062 P. R. China

Search for other papers by Kai Li in
Current site
Google Scholar
PubMed

, and

Jingxin Hu

Jingxin Hu Chinese Institute of Atomic Energy Department of Radiochemistry P.O. Box 275-26 Beijing 102413 P. R. China

Search for other papers by Jingxin Hu in
Current site
Google Scholar
PubMed

View More View Less

Pages:: 301–307

Online Publication Date:: 03 Nov 2004

Publication Date:: 17 Aug 2004

Article Category:: Research Article

DOI:: https://doi.org/10.1023/b:jrnc.0000034863.27788.e4

Restricted access

Abstract

The kinetic properties of the oxidation-reduction reaction between N-methylhydroxylamine (NMHAN) and vanadium(V) in nitric acid medium has been studied by spectrophotometry at 23.1 °C. The rate equation of the redox reaction was determined as -d[V(V)]/dt=k[V(V)] [NMHAN] by investigating the influence of concentration of NMHAN, acidity, ionic strength and the ratio of initial concentration of V(V) to NMHAN on the reaction. The rate constant of the reaction k> = 0.818±0.051 (mol/l)^–1·s^–1 at the ionic strength of 1.00 mol/l. The activation energy of the redox reaction was calculated to be 39.6 kJ/mol. A possibly radical mechanism of the redox reaction between NMHAN and V(V) has been suggested on the basis of electron spin resonance (ESR) spectra of nitroxyl radical, i.e., CH₃

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$\dot N$$ \end{document}

HO. It is helpful to understand and make the redox mechanism of NMHAN and Np(VI) clear in the reprocessing process of nuclear spent fuel.

Save
Cite
Email this content

Share Link

Copy this link, or click below to email it to a friend
Email this content
or copy the link directly:

https://akjournals.com/abstract/journals/10967/261/2/article-p301.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully

Collapse
Expand

Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)