The catalytic hydrodeoxygenation (HDO) reaction is anupgrading processof the bio-oilthat has been extensively studied. In this process, hydrogen is used to reduce the high oxygen content of the bio-oil, which mayincrease its stability. Several metals have been studied as active phase for this process, such as, nickel, cobalt, palladium, iron, platinum, molybdenum among others. The support also plays a fundamental role in this reaction, since it is responsible for the activation of the oxygenated compounds and may favor alternatives pathways. However, for this activation to take place properly it is important that the supportshows appropriate characteristics, which has not been deeply explore up to now. In general, the major problem faced in the HDO reaction is the catalystdeactivation under reaction. In many cases, this deactivation may occur due to coke formation, active phase sintering or pore clogging, highlighting the crucial role of the support. Thus, this postdoctoral project aims to develop new catalysts for the hydrodeoxygenation (HDO) of model bio-oil compounds. The synthesis of supported nanostructured catalysts is an alternative to obtain materials with controlled shape and size, which will allow a better understanding of the influence of these characteristics on the reaction. Nanometric oxides with different acidic-basic and/or redox properties (CeO2, CeNbO2, Nb2O5, V2O3) will be prepared using a non-aqueous sol-gel method and impregnated with nickel precursor. Nanocarbides will also be synthesized from these nanostructured oxides. The proposed strategy aims the development of new catalysts to make the bio-oil processing more selective and stable through economically viable routes.
News published in Agência FAPESP Newsletter about the scholarship: