Zinc chloride mediated degradation of cellulose at 200 degrees C and identification of the products.
Zinc chloride mediated degradation of cellulose at 200 degrees C and identification of the products.
复制标题
DOI：
10.1016/j.biortech.2008.12.066
复制
发表时间：
2009-11
影响因子：
11.4
通讯作者：
Ebede CC
中科院分区：
文献类型：
--
作者：
Amarasekara AS;Ebede CC
研究了ZnCl 2对纤维素降解的影响，以开发直接从纤维素生物质生产有用的原料化学品的条件。发现当在空气中加热超过60秒时，含有0.5摩尔ZnCl 2/摩尔纤维素的葡萄糖单元的纤维素在200 °C下降解。降解的主要非气态产物为糠醛、5-羟甲基糠醛和乙酰丙酸。糠醛和5-羟甲基糠醛的最大产率分别为8%和9%（以纤维素的葡萄糖单元计）。在200 °C下加热150秒后达到这些产率。当在200 °C下加热150秒时，含有0.5摩尔ZnCl 2/摩尔纤维素葡萄糖单元和5.6当量水的纤维素样品以6%产率产生乙酰丙酸作为唯一产物。ZnCl 2介导的纤维素在200 °C下的受控降解显示出以低产率产生有用的原料化学品。
The effect of ZnCl2 on the degradation of cellulose was studied to develop conditions to produce useful feedstock chemicals directly from cellulosic biomass. Cellulose containing 0.5 mol of ZnCl2/mol of glucose unit of cellulose was found to degrade at 200 °C when heated for more than 60 s in air. The major non gaseous products of the degradation were identified as furfural, 5-hydroxymethylfurfural and levulinic acid. The maximum yields for furfural and 5-hydroxymethylfurfural are 8 and 9 % respectively based on glucose unit of cellulose. These yields are reached after 150 s of heating at 200 °C. A cellulose sample containing 0.5 mol of ZnCl2/mol of glucose unit of cellulose and 5.6 equivalents of water when heated for 150 s at 200 °C produced levulinic acid as the only product in 6% yield. The ZnCl2 mediated controlled degradation of cellulose at 200 °C is shown to produce useful feedstock chemicals in low yield.
登录
查看更多内容
影响因子：
3.9
作者：
Girisuta, B.;Janssen, L. P. B. M.;Heeres, H. J.
通讯作者：
Heeres, H. J.
影响因子：
0.9
作者：
Lewkowski, Jaroslaw
通讯作者：
Lewkowski, Jaroslaw
影响因子：
7.4
作者：
Horne, PA;Williams, PT
通讯作者：
Williams, PT
影响因子：
5.3
作者：
Sakaki, T;Shibata, M;Hayashi, N
通讯作者：
Hayashi, N
影响因子：
10.9
作者：
MORTERRA, C;LOW, MJD
通讯作者：
LOW, MJD