文献类型：期刊文献

中文题名：核电用超疏水消氢Pt-Pd/Al2O3催化剂的研究

英文题名：Superhydrophobic Pt-Pd/Al2O3 Catalyst Coating for Hydrogen Mitigation System of Nuclear Power Plant

作者：于伟[1];袁方洋[1];鲍博[2];史学伟[2]

机构：[1]江南大学江苏省食品先进制造装备技术重点实验室,江苏无锡214122;[2]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2019

卷号：39

期号：3

起止页码：454

中文期刊名：核科学与工程

外文期刊名：Nuclear Science and Engineering

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：江苏省自然科学基金青年项目(BK20180621);国家自然科学基金青年项目(11802105)

语种：中文

中文关键词：氢爆;氢氧复合;非能动消氢反应器;疏水性

外文关键词：Hydrogen risk;Hydrogen and oxygen recombination;PAR system;Superhydrophobic

摘要：为解决核电安全事故下大量氢气泄露所带来的爆炸威胁,研究了一种新型超疏水消氢催化剂。结果表明:合金催化剂较单质催化剂拥有更好的消氢性能,并且对水和杂质碘也有更好的抗性。经疏水改性的Pt0.5Pd0.5 催化剂,可以很好的应对模拟核电严重事故下的氢气消除。随着反应的进行,在 25 min 后,氢气转化率可以达到近乎 100%。疏水改性的 Pt0.5Pd0.5合金催化剂在核电安全消氢领域有着良好的应用前景。
In the case of a severe accident in a nuclear plant,a large amount of hydrogen is released in nuclear power plant containment. The high hydrogen concentrations in local areas could result in a threat to containment integrity. For converting the hydrogen into water, supported noble catalysts were studied as an effective hydrogen mitigation system in this paper. Compared with monometallic catalysts,bimetal catalysts(Pt and Pd)exhibit better activity and resistance towards poisoning of both water and fission products. In addition,hydrophobic modification greatly weakens the delayed response of start-up for hydrogen oxidation under humid conditions at low temperatures. The conversion of hydrogen was almost 100% after 25 min. The channel plate reactor with superhydrophobic catalys(t modified Pt0.5Pd0.5)coatings shows great potential for conversion of released hydrogen into water in a nuclear plant.