Changes in pH and redox potential during radiation-induced CO2 reduction in an aqueous solution containing iron powder

✍ Scribed by Norihiko Fujita; Yoshiaki Fukuda; Chihiro Matsuura; Kazuhiko Saigo

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 549 KB
• Volume: 47
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(95)00102-4

✦ Synopsis

A study of the radiation induced CO 2 reduction in a solution containing iron powder with a specific surface area as large as 29 m2/g has revealed that H 2 and hydrocarbons are formed irrespective of whether the solution is irradiated with ?-rays or not and that CO is produced only under ),-ray irradiation. By considering the relation between 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 by a collective effect of 7-rays, CO 2 and iron.