PREPARATION OF FEEDSTOCK FOR HIGH DENSITY JET FUEL SYNTHESIS BY TARGETED DEPOLYMERIZATION OF LIGNIN FROM PHARMACEUTICAL RESIDUES
Herein,Lignin from evodia lepta was used as raw material to depolymerize under the coupling of deep eutectic solvent(ChCl-MeOH-AlCl3·6H2O)and catalyst(Cu(OAc)2/1,10-phenanthroline)to generate feedstock for synthesising high-density jet fuel,and the effects of different reaction temperatures,times,solid-liquid ratios,catalyst additions and oxygen pressures on the catalytic oxidative depolymerization of lignin were investigated.The results showed that under the conditions of solid-liquid ratio of 1∶30 g/mL,mass ratio of lignin to Cu(OAc)2 and 1,10-phenanthroline of 1∶1∶1,oxygen pressure of 3 MPa and 60℃for 3 h,the lignin was selectively depolymerized to produce aromatic aldehydes and ketones used as feedstock for synthesizing high-density jet fuel.The lignin conversion rate reached 80.84%,and the yields of acetovanillone and vanillin were 16.69%and 34.39%,respectively.
万方数据
维普
