Oxygenated additives in bio-fuels: excess enthalpies of mixtures di-butyl ether + 1-propanol + heptane or + cyclohexane at 298.15 and 313.15 K

摘要: The increasing worldwide use of bio-fuels constitutes one the measures considered to reduce greenhouse gas emissions. Bio-fuels also have an important part play in promoting security energy supply, and technological development innovation. Di-butyl ether (DBE) is used as blending agent reformulated gasoline has been included recent international regulations on promotion from renewable sources for transport [1]. Recently 1-propanol proposed too alternative conventional diesel fuels [2]. Interest propanols a second-generation biofuels increased because they many advantages over other potential fuel candidates such ethanol, can be produced biomass by microbial fermentation (cellulose). Ether + alcohol alkane mixtures are interest model which act non-polluting, high octane number agents. From this point view study ternary dibutyl +1-propanol heptane, or cyclohexane, very interesting. This work new contribution previous works our group [3-7]. Experimental excess enthalpies systems DBE heptane cyclohexane corresponding binary at 298.15 K 313.15 reported work. Excess measured with quasi-isothermal flow calorimeter. experimental data fitted using RedlichKister polynomial equation systems. values standard deviation indicate agreement between results ones. determined estimated relative uncertainty 0.01•H E J•mol-1 K. We acknowledge support research Ministerio de Ciencia e Innovacion, Spain, Project ENE2009-14644-C02-02 Agencia Espanola Cooperacion Internacional para el Desarrollo AECID, project AP/041072/11. Doctoral Thesis F.E.M. Alaoui. References