CHANGES IN PH AND REDOX POTENTIAL DURING RADIATION-INDUCED CO2 REDUCTION IN AN AQUEOUS-SOLUTION CONTAINING IRON-POWDER

Authors
FUJITA N FUKUDA Y MATSUURA C SAIGO K
Citation
N. Fujita et al., CHANGES IN PH AND REDOX POTENTIAL DURING RADIATION-INDUCED CO2 REDUCTION IN AN AQUEOUS-SOLUTION CONTAINING IRON-POWDER, Radiation physics and chemistry, 47(4), 1996, pp. 543-549
Citations number
15
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry → ACNP
ISSN journal
0969806X
Volume
47
Issue
4
Year of publication
1996
Pages
543 - 549
Database
ISI
SICI code
0969-806X(1996)47:4<543:CIPARP>2.0.ZU;2-G
Abstract
A study of the radiation induced CO2 reduction in a solution containin g iron powder with a specific surface area as large as 29 m(2)/g has r evealed that H-2 and hydrocarbons are formed irrespective of whether t he solution is irradiated with gamma-rays or not and that CO is produc ed only under gamma-ray irradiation. By considering the relation betwe en pH and ORP (oxidation-reduction potential) the results obtained are attributed to the considerable decrease in pH. For an initial period, the rate of H+ generation is remarkably enhanced by almost 30 times b y a collective effect of gamma-rays, CO2 and iron.