Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China.
Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, College of Electronic Science and Technology, Xiamen University, Xiamen 361005, China.
Bioresour Technol. 2018 Nov;268:531-538. doi: 10.1016/j.biortech.2018.08.025. Epub 2018 Aug 9.
In this research, we compared the discharge characteristics and catalytic efficiency of sulfuric acid, p-toluenesulfonic acid, and their respective sodium salts (sodium sulfate and sodium p-toluenesulfonate) in sawdust liquefaction and found that sulfuric acid was the optimal catalyst when glycerol was used as solvent during the plasma electrolytic liquefaction (PEL) process. When sodium p-toluenesulfonate was used as the only catalyst, the liquefaction yield reached 83.51% after 25 min. This yield was higher than that obtained using sodium sulfate as the catalyst (60.63%) because different concentrations of H ions were produced in PEL. Cellulose, lignin, and holocellulose were extracted from sawdust and successfully liquefied in PEL, illustrating the universality of PEL. The optical emission spectra of the different biomass during the PEL process were similar, indicating that the kinds of free radicals produced were similar, which can accelerate the liquefaction of sawdust.
在这项研究中，我们比较了硫酸、对甲苯磺酸及其各自的钠盐（硫酸钠和对甲苯磺酸钠）在木屑液化中的排放特性和催化效率，发现在等离子体电解液化（PEL）过程中使用甘油作为溶剂时，硫酸是最佳催化剂。当仅使用对甲苯磺酸钠作为催化剂时，在 25 分钟后液化产率达到 83.51%。这个产率高于使用硫酸钠作为催化剂时的产率（60.63%），因为在 PEL 中产生了不同浓度的 H 离子。纤维素、木质素和全纤维素从木屑中提取出来，并在 PEL 中成功液化，说明了 PEL 的普遍性。在 PEL 过程中不同生物质的发射光谱相似，表明产生的自由基种类相似，这可以加速木屑的液化。
