Institute of Chemical Process Fundamentals of the CAS, Prague, CZ.
J Hazard Mater. 2010 Sep 15;181(1-3):633-9. doi: 10.1016/j.jhazmat.2010.05.059.
This study was a comparison between Ru-catalysts and similar, previously investigated, Pt-catalysts. In this paper, ruthenium catalysts for catalytic wet air oxidation are prepared, characterized and tested. Both catalysts were supported on commercial CeO2 as well as mixed oxide Zr(0.1)(Ce(0.75)Pr(0.25))(0.9)O2. The catalysts were characterized by measuring the oxygen storage capacities (OSC), BET, XRD, FTIR and chemisorption of hydrogen. In addition, the effect of sintering (treatments under H2) was compared with both of the catalysts. The comparison of the results showed that initial intrinsic activity of ruthenium is not significantly influenced by the type of the support, which is contrast to platinum. Furthermore, the particle size of Ru had an important effect on CWAO activity: the higher the particle size, the better the activity. This was different with Pt-catalysts, where the optimal particle size was smaller, having about 15% of metal dispersion.
本研究对钌催化剂与之前研究过的类似的铂催化剂进行了比较。在本文中，制备、表征和测试了用于催化湿式氧化的钌催化剂。两种催化剂均负载在商业 CeO2 以及混合氧化物 Zr(0.1)(Ce(0.75)Pr(0.25))(0.9)O2 上。通过测量氧储存容量（OSC）、BET、XRD、FTIR 和氢气化学吸附对催化剂进行了表征。此外，还比较了烧结（在 H2 下处理）对两种催化剂的影响。结果表明，与铂催化剂不同，钌的初始本征活性不受载体类型的显著影响。此外，Ru 的粒径对 CWAO 活性有重要影响：粒径越高，活性越好。而对于 Pt 催化剂，最佳粒径较小，金属分散度约为 15%。
