期刊论文

Study on Catalytic Degradation of Lignin in Straw by Ionic Liquid [Bmim]im

中文

广州化工

1001-9677

2017

45

1

59-62+81

10.3969/j.issn.1001-9677.2017.01.021

本校为第一机构

研究了离子液体[Bmim]im催化稻草秸秆中木质素降解的方法。探究了热回流条件下离子液体[Bmim]im对稻草秸秆木质素的降解条件,最优条件:反应温度为120℃,物料/催化剂比为5∶5,物料/水比为1∶10,加热时间为6 h,在最优条件下稻草秸秆中木质素的降解率达到69.37%,木质素由降解前含量的18.90%降低至降解后残渣中仅为5.09%,纤维素含量由原来的52.02%上升到了69.01%,提升了32.66%。对以纤维素为主要原料的工业有重要的意义。

The method of degradation of lignin in straw catalyzed by ionic liquid [Bmim]im was studied. The degradation of lignin in rice straw by ionic liquid [Bmim]im under heat reflux was investigated. The optimum conditions were as follows： the reaction temperature was 120 ℃,material / catalyst ratio was 5∶5,material / water ratio was 1∶10,heating time was 6 h. The degradation rate of lignin in straw was 69. 37%. The content of lignin in the residual straw decreased from 18. 90% to 5. 09%,while the content of its cellulose rose from 52. 02% to 69....