制备条件对Pt-SDB催化氢氧复合性能的影响

Effect of Preparation Conditions on the Catalytic Performance of Pt-SDB for Hydrogen-Oxygen Recombination

摘要: 重水提氚循环中需要进行大量的氢氧复合反应，制备能够令反应平稳、大量地进行的疏水催化剂，已经成为控制循环成本的关键。由于绝大部分学术热点停留在电池领域，常温氢氧复合催化剂的制备一直未能实现国产化。本文从散热角度出发，对两种SDB(聚苯乙烯–二乙烯基苯)载体进行了比较与筛选。通过对三种制备条件——还原温度、浸渍静置时间、还原时间——的控制变量研究，结合TEM微观表征分析，推测出Pt粒子在SDB载体中的生长与分布，进而影响到催化剂的催化效率及稳定性。

Abstract: In the heavy water detritiation cycle, a large number of hydrogen-oxygen recombinations are required, and the preparation of a hydrophobic catalyst that can make the reaction proceed smoothly and in large quantities has become the key to controlling the cycle cost. As most of the academic hotspots remain in the battery field, the preparation of ambient temperature hydrogen-oxygen recombination catalysts has not been able to achieve localization. From the perspective of heat dissipation, this article compares two kinds of SDB (polystyrene-divinylbenzene) carriers and makes a select. By studying the controlled variables of the three preparation conditions, reduction temperature, immersion standing time, and reduction time, combined with TEM microscopic characterization analysis, the growth and distribution of Pt particles in the SDB carrier are conjectured, which in turn affects the catalysis efficiency and stability of the catalyst.