Synthesis of C<sub>15</sub> and C<sub>10</sub> fuel precursors with cyclopentanone and furfural derived from hemicellulose
作者:Wei Wang、Xiaohui Ji、Hongguang Ge、Zhizhou Li、Guanghui Tian、Xianzhao Shao、Qiang Zhang
DOI:10.1039/c7ra02396k
日期:——
Fuel precursors 2,5-bis(2-furylmethylidene)cyclopentanone (F2Cp) and 2-(2-furylmethylidene)cyclopentanone (FCp) were obtained through aldol condensation of cyclopentanone and furfural over solid acid catalysts under solvent-free conditions. Nafion exhibited the best performance among the investigated catalysts (Nafion, Amberlyst-15, Amberlyst-36, H-USY, ZSM-5, H-β, and SiO2/Al2O3). Under optimized
燃料前体2,5-双(2-呋喃基亚甲基)环戊酮(F 2 Cp)和2-(2-呋喃基亚甲基)环戊酮(FCp)通过环戊酮和糠醛在固体酸催化剂上无溶剂条件下醛醇缩合得到。在研究的催化剂(Nafion,Amberlyst-15,Amberlyst-36,H-USY,ZSM-5,H-β和SiO 2 / Al 2 O 3)中,Nafion表现出最佳性能。在优化条件下,F 2 Cp和FCp的产率分别为37.48%和23.77%。F 2的选择性Cp和FCp分别为50.74%和32.18%。Nafion表现出良好的稳定性,并且在4次运行中没有失活。同时,在反应过程中还产生了一定量的腐殖质。还提出了环戊酮与糠醛的醛醇缩合反应机理和腐殖质的形成机理。