Advanced combustion technologies offer significant improvement in fuel economy as well as lower NO engine out emissions due to the nature of low temperature combustion; however, the lower exhaust temperature has been a major concern in the removal of hydrocarbon and CO emissions under the future emission regulation. In the present study, we discove...
Electrochemical experiments performed on the complex Ce-IV[2-((BuNO)-Bu-t)py](4), where [2-((BuNO)-Bu-t)py](-) = N-tert-butyl-N-2-pyridylnitroxide, indicate a 2.51 V stabilization of the 4+ oxidation state of Ce compared to [(Bu4N)-Bu-n](2)[Ce(NO3)(6)] in acetonitrile and a 2.95 V stabilization compared to the standard potential for the ion under a...
The methanation of CO and CO2 present in coke oven gas was performed in a fixed-bed catalytic reactor at a reaction temperature between 200 and 400 C. Different support materials, including SiO2, Al2O3, ZrO2, and CeO2, were doped with a different percentage of active metals using a standard impregnation and coprecipitation method. The catalysts wer...
Both pure and mixed CeO2-Fe2O3 were prepared for CO2 reduction to CO by chemical looping. The crystallographic structure of the investigated materials was monitored in situ during H-2 reduction and CO2 oxidation. A solid solution of iron in ceria was identified. Up to 70 wt % CeO2, a distinct Fe2O3 hematite phase occurred next to the solid solution...
Lanthanide (Ln, including La, Ce and Nd) modified Co/HMS was prepared via two pathways: extra-framework modified post-loading and framework modified direct synthesis. The influence of modified methods, rare earths kind and rare earths loading on the catalytic performance of Co/HMS was studied by the catalytic combustion of chlorobenzene (CB). It wa...
CNPq
The CuO/CeO2 system was investigated as a catalyst for preferential CO oxidation reaction in hydrogen-rich feed (PROX-CO). The catalysts were prepared by deposition-precipitation (DEP) and co-precipitation (COP) methods and the catalytic performance reveals that the preparation method influences the properties of solids prepared, where a direct con...
The CuO/CeO2 system was investigated as a catalyst for preferential CO oxidation reaction in hydrogen-rich feed (PROX-CO). The catalysts were prepared by deposition-precipitation (DEP) and co-precipitation (COP) methods and the catalytic performance reveals that the preparation method influences the properties of solids prepared, where a direct con...
CNPq
