@article{oai:repo.qst.go.jp:00047719,
 author = {上野, 有美 and 中川, 雅博 and 佐藤, 淳也 and 岩井, 保則 and 岩井 保則},
 issue = {1},
 journal = {Japanese Journal of Health Physics},
 month = {Jul},
 note = {In the Nuclear Science Research Institute, Japan Atomic Energy Agency (JAEA), in order to oxidize 14C, which exists in various chemical forms in exhaust, into 14CO2, a copper oxide (CuO) catalyst is introduced after heating to 600 C. Our goal was to establish a safer 14C monitoring system by lowering the heating temperature required for the catalyst; therefore, we developed a new hydrophobic palladium/silicon dioxide (Pd/SiO2) catalyst that makes the carrier's surface hydrophobic. In these experiments, catalysts CuO, platinum/aluminum oxide (Pt/Al2O3), palladium/zirconium dioxide (Pd/ZrO2), hydrophobic Pd/SiO2, and hydrophilic Pd/SiO2 were ventilated with standard methane gas, and we compared the oxidation efficiency of each catalyst at different temperatures. As a result, we determined that the hydrophobic Pd/SiO2 catalyst had the best oxidation efficiency. By substituting the currently used CuO catalyst with the hydrophobic Pd/SiO2 catalyst, we will be able to lower the working temperature from 600 C to 300 C and improve the safety of the monitoring process.},
 pages = {7--11},
 title = {放射性気体廃棄物中の14C捕集に用いる疎水性パラジウム触媒の酸化性能評価},
 volume = {51},
 year = {2016}
}