書誌事項
- タイトル別名
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- Evaluation of Oxidation Efficiency of Hydrophobic Palladium Catalyst for <sup>14</sup>C Monitoring in Gaseous Radioactive Waste
- 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
- ホウシャセイ キタイ ハイキブツ チュウ ノ ¹ ⁴ Cホシュウ ニ モチイル ソスイセイ パラジウム ショクバイ ノ サンカ セイノウ ヒョウカ
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説明
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℃. 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℃ to 300℃ and improve the safety of the monitoring process.
収録刊行物
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- 保健物理
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保健物理 51 (1), 7-11, 2016
日本保健物理学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204288824064
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- NII論文ID
- 130005163098
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- NII書誌ID
- AN00228458
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- ISSN
- 18847560
- 03676110
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- NDL書誌ID
- 027440747
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可