Yields of Hydrogen Peroxide in the Decomposition of Water by Cobalt γ-Radiation. I. Effect of Bromide Ion

1954 ◽  
Vol 76 (18) ◽  
pp. 4687-4692 ◽  
Author(s):  
Thomas J. Sworski
Keyword(s):  
Hydrogen Peroxide ◽  
Γ Radiation ◽  
Bromide Ion ◽  
Decomposition Of Water

Hydrogen Peroxide Production by Gamma Radiolysis of Sodium Chloride Solutions Containing a Small Amount of Bromide Ion

2016 ◽  
Vol 193 (3) ◽  
pp. 434-443 ◽  
Author(s):  
Kuniki Hata ◽  
Hiroyuki Inoue ◽  
Takao Kojima ◽  
Akihiro Iwase ◽  
Shigeki Kasahara ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Chloride ◽  
Hydrogen Peroxide Production ◽  
Chloride Solutions ◽  
Sodium Chloride Solutions ◽  
Gamma Radiolysis ◽  
Bromide Ion

Electron Spin Resonance Studies of Reactions of Photo-generated Organic Radicals with Hydrogen Peroxide in Aqueous Solution

1971 ◽  
Vol 49 (24) ◽  
pp. 4005-4016 ◽  
Author(s):  
C. E. Burchill ◽  
P. W. Jones
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Free Radicals ◽  
Electron Spin Resonance ◽  
Organic Radicals ◽  
Chain Reaction ◽  
Direct Photolysis ◽  
Ketyl Radical ◽  
Γ Radiation ◽  
Spin Resonance

The reactions with H2O2 of free radicals derived from 2-propanol, methanol, dimethoxymethane, and tetrahydrofuran have been investigated by e.s.r. using in-cavity photolysis with acetone photosensitization to generate the radicals in flowing aqueous solutions. The variation in the concentrations of the radicals derived from a particular solute with addition of H2O2 is attributed to the selective oxidation of one radical by H2O2, propagating a secondary chain reaction, e.g.,[Formula: see text]The rate constant for the oxidation of the acetone ketyl radical ((CH3)2ĊOH) by H2O2 is estimated to be 5 × 105 M−1 s−1.The results and conclusions of this study are demonstrated to be consistent with the results of previous investigations employing γ-radiation, photolysis, and the reaction of Ti(III) with H2O2 for initiation.Results are also reported for the direct photolysis of aqueous malonic acid in the presence of H2O2.

Determining the role of redox-active materials during laser-induced water decomposition

2019 ◽  
Vol 21 (34) ◽  
pp. 18636-18651 ◽  
Author(s):  
Mark-Robert Kalus ◽  
Riskyanti Lanyumba ◽  
Nerea Lorenzo-Parodi ◽  
Maik A. Jochmann ◽  
Klaus Kerpen ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Laser Ablation ◽  
Molecular Hydrogen ◽  
Ablation Rate ◽  
Water Decomposition ◽  
Active Materials ◽  
Oxidation Degree ◽  
Redox Active ◽  
Decomposition Of Water

The decomposition of water and the formation of molecular hydrogen, oxygen, and hydrogen peroxide during laser ablation of redox-active materials is systematically studied and related to the ablation rate and oxidation degree of the nanoparticles.

The selective oxidation of toluenes to benzaldehydes by cerium(III), hydrogen peroxide and bromide ion

1997 ◽  
Vol 117 (1-3) ◽  
pp. 279-287 ◽  
Author(s):  
Kevin Auty ◽  
Bruce C. Gilbert ◽  
C.Barry Thomas ◽  
Scott W. Brown ◽  
Craig W. Jones ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Bromide Ion

Effect of External Gamma Irradiation on Dissolution of the UO2 Matrix

2004 ◽  
Vol 824 ◽  
Author(s):  
C. Jégou ◽  
B. Muzeau ◽  
V. Broudic ◽  
S. Peuget ◽  
A. Poulesquen ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Dose Rate ◽  
Homogeneous Solution ◽  
Water Radiolysis ◽  
Γ Radiation ◽  
Alpha Emitters ◽  
Leaching Experiments ◽  
Alpha Radiolysis

AbstractLeaching experiments were done on UO2 pellets doped with alpha-emitters (238/239Pu, 1500 - year batch), in the presence of an external gamma irradiation source (A60Co = 260 Ci, γ dose rate = 650 Gy h−1). The effects of α and γ radiation and the nature of the cover gas (air or Ar + 4% H2) on water radiolysis, and on oxidizing dissolution of the UO2 matrix, are quantified and discussed. The cover gas clearly has a major role in the effect of γ radiolysis. The dissolution rate in an aerated medium is 83 mg m−2 d−1 compared with only 6 mg m−2 d−1 in Ar + 4% H2. The rate drop is accompanied by a reduction of about four orders of magnitude in the hydrogen peroxide concentrations in the homogeneous solution. The UO2 alteration rate under gamma radiation in Ar + 4% H2 is comparable to the rate obtained in the presence of alpha radiolysis alone for the doped UO2 pellets with the highest alpha activities (4.75 × 108 Bq/g UO2, 15 - year batch).

Sign in / Sign up

Export Citation Format

Share Document