Author(s)

Camila Emilia Kozonoe¹, Reinaldo Giudici¹, Martin Schmal^1,2*

¹Department of Chemical Engineering, Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil.
²Federal University of Rio de Janeiro, COPPE/PEQ/Nucat, Rio de Janeiro, Brazil.

This work proposes the synthesis of the 5%wt Ru on MWCNT catalyst and the influence of feed rate and testing variables for low-temperature oxidation affecting the CO₂ yield. Morphology and incorporation of the nanoparticles in carbon nanotubes were investigated by specific surface area (BET method); thermogravimetric analyses (TGA); X-ray diffraction; Raman spectroscopy, transmission electron microscopy (TEM) and XPS. The conversions of CO and O₂ were mostly 100% in groups C1 and C2 (temperature between 200 and 500°C with low WHSV). In order to assess the effect of mass on catalytic activity, condition C3 was tested at even lower temperatures. In the tested catalyst, high activity (100% CO and O₂ conversion) was observed, keeping it active under reaction conditions, suggesting oxi-reduction of the RuO₂ at surface without affecting the MWCNT but Lewis acid influencing the CO₂ yield.

Multi-Walled Carbon Nanotubes, Ruthenium, CO Oxidation

Kozonoe, C. , Giudici, R. and Schmal, M. (2021) Ruthenium Catalyst Supported on Multi-Walled Carbon Nanotubes for CO Oxidation. Modern Research in Catalysis, 10, 73-91. doi: 10.4236/mrc.2021.103005.