Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Bioresour Technol. 2012 Nov;123:324-31. doi: 10.1016/j.biortech.2012.07.058. Epub 2012 Jul 25.
In order to increase furfural yield and lignin removal, both FeCl(3) and acetic acid were used to co-catalyze the hydrolysis of corncob. A series of experiments were carried out to investigate the effects of acetic acid, FeCl(3) concentrations and temperatures on furfural production and residue characteristics. The results showed that high FeCl(3) concentrations caused serious cellulose degradation while acetic acid was more effective for lignin removal. A maximum furfural yield of 67.89% (35.74% higher than that in conventional sulfuric acid-catalyzed process) was obtained at 180°C in the presence of 20mM of FeCl(3) and 3% of acetic acid. Simultaneously, lignin removal reached 54.79%, and 74.29% of the cellulose was remained for further utilization. Acetic acid and FeCl(3) co-catalyzed hydrolysis was not only a high efficiency and environmental friendly technique, but also provided a possibility to utilize the furfural residue for ethanol production and other industries.
为了提高糠醛产率和木质素去除率，采用 FeCl(3)和乙酸协同催化水解玉米芯。进行了一系列实验，研究了乙酸、FeCl(3)浓度和温度对糠醛生成和残渣特性的影响。结果表明，高浓度的 FeCl(3)会导致严重的纤维素降解，而乙酸更有利于木质素去除。在 180°C 下，当 FeCl(3)浓度为 20mM，乙酸浓度为 3%时，糠醛的最高收率为 67.89%（比传统硫酸催化工艺高 35.74%）。同时，木质素去除率达到 54.79%，74.29%的纤维素得以保留，用于进一步利用。乙酸和 FeCl(3)协同催化水解不仅是一种高效、环保的技术，还为糠醛残渣用于乙醇生产和其他行业提供了可能性。
