Biomass Derivatives Into Furan Base Biofuels

The production of liquid fuels derived from biomass is of major interest to reduce the dependence on the diminishing fossil fuel resources. Furyl-biofuel has been identified as an attractive liquid fuel suitable for the transportation.1. Owing to the different functionalities of HMF, many by-products are typically formed, which lead to a low yield of DMF.The noble-metal catalyst has low yield(<48%) and requires harsh reaction condition. The development of highly efficient catalysts is yet of great challenge for the production of DMF from HMF, especially non-noble-metal catalysts.Therefore, we design uniformly dispersed Co-based catalysts to selectively convert HMF into DMF in mild reaction condition.(1) We prepare uniformly dispersed noble-free metal Co catalysts in-situ reduction from hydrotalcite precursor used in the conversion of HMF to DMF by hydrogenolysis of C-O bonds. The Co-based catalysts can convert HMF into DMF with75.8%yield in mild reaction condition of130℃0.7MPa in6h, to exceed48%yield at240℃over noble metal catalysts reported and reach71%yield at220℃over noble metal RuCu/C(2) Through the modulation of proportion in the hydrotalcite procusor, the catalysts with different Co particle size have been simply prepared. With the smaller of the Co nanoparticles, the yield of DMF increace higher.(3) The Co catalyst is reused five times and maintain a good activity with66.8%yield DMF。2. One-step catalytic transformation of glucose into biofuel remains junior. Meanwhile, its has many shortcomings, such as homogenous phase, employing liquid acid and low yield31%.We successfully prepare acid-metal difunctional catalyst to convert glucose into5-methylfurfural:(1) The bifunctional catalysts have been builded with montmorillonoid as acidity site and loaded PdxCuy, Pd or Ru metal nanoparticles as metal activs site.The bifunctional catalyst synergistically convert glucose into5-methylfurfural by one-step.(2) Through the ion-exchange intercalation method, The catalysts with different acid strength have been prepared. With the stronger acid,the yield of5-MF in creases. Through loading different metal on montmorillonoid,the catalysts with different metal activity sites have been modulated.The Ru/Ti-mmt catalyst has the highest yield of5-MF with32.1%yield.