CATALYTIC HYDROGENATION OF HYDROXYCYCLOALKANES AND USE OF THE PRODUCT IN BIOFUEL COMPOSITIONS FOR AVIATION

摘要

This invention relates to a new biofuel alternative to be used in aviation sector, starting from obtention and production routes of renewable sources compounds, that may act as load for aviation kerosene composition. Naphthenic compounds (cycloalkanes) obtained from renewable sources are used as enrichment or addition loads of aviation kerosene. The process is based on hydrogenolysis catalytic reactions, from hydroxycycloalkanes derevatives substrata, like menthol and isopulegol. The catalytic system is constituted of a physical mixture of hydrogenation heterogeneous catalysts, acid heterogeneous catalysts, and hydrogenating metallic catalysts in acid supports. The hydrogenation catalysts used envolve noble metals from groups 6, 7, 8, 9 and 10 of periodic table, whose content ranges from 0.01-10%. The heterogeneous catalysts suitable acids are represented by acidic sulfonated polymer resins, protonated zeolites and sulfated zirconia. The catalytic reaction conditions involving a temperature range of 70-250° C., pressure between 1-70 and agitation ranging from 100-1000 rpm. The composition involving the biofuel, obtained by catalytic hydrogenation process, is obtained as a mixture composed by cycloalkanes and aviation fuel in ratio 1:100 to 100:1, in volume.