Catalisadores de Ru/C e bimetálicos de Ni e Fe: aplicação na conversão de derivados da biomassa, destacando os compostos furânicos

Abstract

The demand of energy, fuels and chemicals is increasing due to the strong growth of some countries in the developing world and the development of the world economy. Nowadays the fossil fuels and crude oil based petroleum products are the major sources of energy used in the world. However, due to increase in the price of oil, caused by reductions in oil supplies. Currently, the biomass is the most promising alternative to fossil fuels to produce chemicals and fuels. In this work, the development of catalytic processes for the valorization of biomass-derived has been investigated. Initially, we studied the effect of the hydrogen donor on the hydrodeoxygenation reaction under Ru/C catalyst. Herein, we examine the use and role of the H2 over Ru/C in a furfural hydrodeoxygenation (HDO) reaction and subsequently show that temperature is sensitive parameters in obtaining MF selectively from furfural. As a result, the use of external H2 produces a drastically different product distribution than when 2-propanol is used as the hydrogen source. Subsequently, the hydrodeoxygenation from furfural to MF was performed using mono and bimetallic catalysts based on Fe and Ni and supported on carbon, alumina or silicon. A complete conversion was performed using bimetallic catalysts supported on carbon and alumina at 220 oC with high yield to MF. This result is consistent with the analysis by TPR-H2, MEV and N2 isotherms that revealed highly dispersed supported metal and a high surface area of the carbon support.