Improved characteristics of hydrophobic polytetrafluoroethylene–platinum catalysts for tritium recovery from tritiated water
Improved characteristics of hydrophobic polytetrafluoroethylene–platinum catalysts for tritium recovery from tritiated water
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DOI：
10.1016/j.fusengdes.2008.05.026
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发表时间：
2008-12
影响因子：
1.7
通讯作者：
I. Popescu;G. Ionita;I. Ştefănescu;C. Varlam;D. Dobrinescu;I. Faurescu
中科院分区：
文献类型：
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作者：
I. Popescu;G. Ionita;I. Ştefănescu;C. Varlam;D. Dobrinescu;I. Faurescu
本文介绍了一种新的氢同位素分离用疏水催化剂的制备方法和性能。本论文的研究目的是：(1)评价铂疏水催化剂的研究现状，寻找制备新型疏水催化剂的新工艺；(2)改进铂疏水催化剂的性能。通过查阅文献，认为铂是氢同位素分离过程中活性最高、效率最高的催化金属之一，聚四氟乙烯是一种很好的防潮剂。提出了一类新改进的疏水铂催化剂，并对其进行了表征和表征，目前正在进行测试。新颖之处在于添加了金属氧化物(二氧化钛、二氧化锆)作为新的粘结剂和防潮剂。添加的金属氧化物也起到催化作用。对改进后的催化剂的物理结构参数进行了测定和讨论。对氚分离过程中的催化活性和稳定性进行了初步试验。这一新方案是改善传统疏水铂催化剂性能的一个有前途的想法。
This paper presents recent results concerning a new preparation method and characteristics of the hydrophobic catalysts used in hydrogen isotopes separation. The objectives of the paper are: (1) to assess the current status and find a new procedure for the preparation of a new improved hydrophobic catalyst; (2) to improve the characteristics and performance of platinum hydrophobic catalysts. As a result of review of references it was concluded that platinum is one of the most active and efficient catalytic metal and polytetrafluoroethylene is a very good wet-proofing agent in the hydrogen isotopes separation processes. A category of newly improved hydrophobic Pt-catalysts has been proposed, prepared and characterized and are now under testing. The novelty consists in adding of metallic oxides (titanium dioxide, zirconium dioxide) as a new binding and wet-proofing agents. The added metallic oxides play a catalytic role, too. The physico-structural parameters of the improved catalyst have been determined and are discussed. Preliminary tests concerning the catalytic activity and stability in tritium separation process have been carried-out. The new proposal is a promising idea to improve the performance of conventional hydrophobic Pt-catalysts.