The main research project of our group involves developing and evaluating niobiumbased catalysts employed on processes that lead to platform molecules from biomassderived substances, such as xylose, and contribute to the diversification of the products obtained in a biorefinery. We also aim at the valuation of Nb, a strategic resource for Brazil. Other projects of our group involve the synthesis, evaluation and development of heterogeneous catalysts for the hydrogenation of aromatics. We are currently studying the catalytic kinetics of the liquid-phase partial hydrogenation of benzene aiming to enhance the cyclohexene yield. To do so, we employ Ru/Al2O3 solids prepared by impregnation techniques and activated either by formaldehyde, NaBH4 or under ex situ H2 flow.