NDLI: Effect of O$_{2}$, H$_{2}$O$_{2}$, and HNO$_{2}$ on the stability of Np(III

Please wait, while we are loading the content...

The use of poly(acrylamide-acrylic acid)-montmorillonite composite for preparing low-activity $^{60}$Co, $^{65}$Zn, $^{134,137}$Cs mixed sealed source for radiometric calibration purposes

Synthesis of $^{99m }$Tc-biphenyl-2-ylcarbamoylmethyliminodiacetic acid for hepatobiliary imaging

Radiosynthesis of $^{99m }$Tc-labeled novobiocin dithiocarbamate complex as a potential Staphylococcus aureus infection radiotracer

Synthesis and characterization of a {ReO}$^{3+}$ complex with S- and N-donor ligands and of its $^{99m }$Tc analog

Formation of surface layers in leaching of borosilicate glasses incorporating different amounts of simulated HLW

Leaching of radionuclides from products of underground nuclear explosions in granite: Experiments with radioactive samples of melted rock from explosion cavities on Semipalatinsk test site

Monitoring of Kr and Xe isotopes in air using liquid oxygen

Radiochemistry : Volume 54, Issue 2, April 2012

Radiochemistry : Volume 54, Issue 1, February 2012

Radiochemistry : Volume 53

Radiochemistry : Volume 52

Radiochemistry : Volume 51

Radiochemistry : Volume 50

Radiochemistry : Volume 49

Radiochemistry : Volume 48

Radiochemistry : Volume 47

Radiochemistry : Volume 46

Radiochemistry : Volume 45

Radiochemistry : Volume 44

Radiochemistry : Volume 43

Effect of O$_{2}$, H$_{2}$O$_{2}$, and HNO$_{2}$ on the stability of Np(III–VII) in aqueous solutions

Content Provider	Springer Nature Link
Author	Shilov, V. P. Gogolev, A. V. Fedoseev, A. M. Ershov, B. G.
Copyright Year	2012
Abstract	Published data on reactions of Np ions with O$_{2}$, H$_{2}$O$_{2}$, HNO$_{2}$, and HNO$_{3}$ in solutions of various compositions in a wide pH range are considered. O$_{2}$ oxidizes Np(III) in acid solution and Np(IV) and Np(V) in alkaline solutions. H$_{2}$O$_{2}$ exhibits dual behavior. In weakly acidic solutions, it converts Np(III) and (IV) to Np(V), in 0.75–1 M NaHCO$_{3}$ it oxidizes Np(V) to Np(VI), whereas in dilute HClO$_{4}$ and HNO$_{3}$ and in carbonate and alkali solutions it reduces Np(VI), and in alkali solutions it reduces Np(VII). The first step of reduction in most cases is the formation of the Np(VI) peroxide complex, and the next step is the intramolecular charge transfer. In concentrated HNO$_{3}$ solutions, H$_{2}$O$_{2}$ converts Np(V) to Np(IV) and Np(VI) and then reduces Np(VI). Some radiation-, photo-, and sonochemical reactions occur via formation of excimers, i.e., of dimers arising from excited and unexcited Np ions. The excimer decomposes into two ions with higher and lower oxidation states. In reduction reactions, the excimer eliminates H$_{2}$O$_{2}$ (in addition to the H$_{2}$O$_{2}$ arising as primary product of water radiolysis). In HNO$_{3}$ solutions, oxidation of Np ions occurs only in the presence of HNO$_{2}$ arising as reaction product or upon radiolysis, photolysis, or sonolysis. The active species are NO 2 − , NO$_{2}$, and NO$^{+}$ present in equilibrium with HNO$_{2}$.
Starting Page	228
Ending Page	240
Page Count	13
File Format	PDF
ISSN	10663622
Journal	Radiochemistry
Volume Number	54
Issue Number	3
e-ISSN	16083288
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-06-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	neptunium redox reactions oxygen hydrogen peroxide nitrous acid nitric acid radiolysis photochemistry sonochemistry Nuclear Chemistry Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Speciation, stability, and reactions of Np(III–VII) in aqueous solutions

Reaction of Np(VI) with H$_{2}$O$_{2}$ in carbonate solutions

Mechanisms of neptunium redox reactions in nitric acid solutions

RADIATION CHEMISTRY OF NITRIC ACID SOLUTIONS.

Oxidation of Np(IV) with hydrogen peroxide in carbonate solutions

Influence of the origin of H$_{2}$O$_{2}$ on the rate of its reaction with Pu(VI) and Am(V) in acid solutions

Radiolysis of aqueous nitrate solutions

Possibility of using hydrogen peroxide for trapping nitrogen oxide at radiochemical enterprises

Catalytic reduction of Np(V) with hydrazine in nitric acid solutions in the presence of ruthenium catalysts

Effect of O$_{2}$, H$_{2}$O$_{2}$, and HNO$_{2}$ on the stability of Np(III–VII) in aqueous solutions

Similar Documents

Speciation, stability, and reactions of Np(III–VII) in aqueous solutions

Reaction of Np(VI) with H$_{2}$O$_{2}$ in carbonate solutions

Mechanisms of neptunium redox reactions in nitric acid solutions

RADIATION CHEMISTRY OF NITRIC ACID SOLUTIONS.

Oxidation of Np(IV) with hydrogen peroxide in carbonate solutions

Influence of the origin of H$_{2}$O$_{2}$ on the rate of its reaction with Pu(VI) and Am(V) in acid solutions

Radiolysis of aqueous nitrate solutions

Possibility of using hydrogen peroxide for trapping nitrogen oxide at radiochemical enterprises

Catalytic reduction of Np(V) with hydrazine in nitric acid solutions in the presence of ruthenium catalysts

Effect of O$_{2}$, H$_{2}$O$_{2}$, and HNO$_{2}$ on the stability of Np(III–VII) in aqueous solutions