Studies of radiation-induced reactions in aqueous solution systems containing platinum group elements

Nagaishi, Ryuji ; Aoyagi, Noboru ; Yamada, Reiji

Radiation-induced reductions of Pt group ions (Pd, Rh, Pt,..) were studied in aqueous solution systems by using Co-60 -ray or electron beam. A small amount of oxide particles like Al $_{2}$ O $_{3}$ , SiO $_{2}$ or TiO $_{2}$ remarkably promoted the reduction of ions, which hardly proceed by ionizing radiations unless additives such as alcohol are present in solution. The promotion was discussed in terms of speciation of Pt group species, and of interaction between the species and the particles. Precipitates/adsorbents of Pt group elements on the particles formed during the reduction were also found to be involved in the further promotion of reduction of metal ions in aqueous solution.

Language	:	Japanese
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Meeting title	:	第49回放射線化学討論会
Held date	:	2006/10
Location (city)	:	高崎
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	コバルト60照射施設
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Registration No. : BB20062306
JAEA Abstracts No. :
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