Catalytic CO Oxidation and H2O2 Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes

Titania nanotubes (TNTs) impregnated with Pd and Pt nanoparticles are evaluated as heterogeneous catalysts in different conditions two reactions: catalytic CO oxidation (gas phase, up to 500 °C) H2O2 direct synthesis (liquid 30 °C). The TNTs obtained via of titanium metal the intermediate layer-type sodium titanate Na2Ti3O7. Thereafter, layers exfoliated show self-rolling TNTs, which, finally, or at room temperature by using Pd(ac)2 Pt(ac)2. resulting crystalline Pd/TNTs Pt/TNTs realized lengths (long TNTs: 2.0–2.5 µm, short 0.23–0.27 µm) a specific surface area 390 m2/g. deposited particles 2–5 nm diameter. TNT-derived good thermal (up chemical stability (in liquid-phase gas-phase reactions). evaluation results low light-out 150 °C for (1 wt-%) promising generation productivity 3240 molH2O2 kgPd?1 h?1 (Pd/TNTs, 5 wt-%, Despite their smaller area, long outperform regard both formation.