Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
Bioresour Technol. 2014 Dec;173:399-405. doi: 10.1016/j.biortech.2014.09.125. Epub 2014 Oct 2.
In this study, the effects of six metal ions including Na+, K+, Mg2+, Ca2+, Cu2+ and Fe3+ on hydrolysis of bamboo biomass by diluted hydrochloride acid (HCl) in ionic liquid [C4mim]Cl under mild conditions was investigated. These metal ions as co-catalysts exhibited significant effects on accelerating the hydrolysis process and improving the yield of total reducing sugar compared to single diluted hydrochloride acid hydrolysis in [C4mim]Cl at the same conditions. The most effective ion was Cu2+ and the total reducing sugar yield of 67.1% was achieved at 100 °C with CuCl2 as co-catalyst after 4-h reaction. The total reducing sugar yield was increased by about 7% and the reaction time was decreased by 3 h. The kinetic model was also investigated to give an insight into the mechanism of hydrolysis process.
在这项研究中，考察了六种金属离子（包括 Na+、K+、Mg2+、Ca2+、Cu2+ 和 Fe3+）在离子液体[C4mim]Cl 中对稀盐酸（HCl）水解竹生物质的影响。这些金属离子作为共催化剂，与相同条件下[C4mim]Cl 中单一稀盐酸水解相比，在温和条件下显著加速水解过程并提高总还原糖的产率。最有效的离子是 Cu2+，当以 CuCl2 作为共催化剂，在 100℃下反应 4 小时后，总还原糖产率达到 67.1%。总还原糖产率提高了约 7%，反应时间缩短了 3 小时。还研究了动力学模型，以深入了解水解过程的机制。
