State Key Laboratory of Pulp and Paper Engineering, South China University of Technology , Guangzhou 510640, China.
J Agric Food Chem. 2011 Oct 12;59(19):10524-31. doi: 10.1021/jf2025902. Epub 2011 Sep 12.
In this study, cornstalk was pretreated by an acid-chlorite delignification procedure to enhance the conversion of cornstalk to bio-oil in hot-compressed water liquefaction. The effects of the pretreatment conditions on the compositional and structural changes of the cornstalk and bio-oil yield were investigated. It was found that acid-chlorite pretreatment changed the main components and physical structures of cornstalk and effectively enhanced the bio-oil yield. Shorter residence time favored production of the total bio-oil products, whereas longer time led to cracking of the products. A high water loading was found to be favorable for high yields of total bio-oil and water-soluble oil. GC-MS analysis showed that the water-soluble oil and heavy oil were the complicated products of C(5-10) and C(8-11) organic compounds.
本研究采用酸-次氯酸盐预处理玉米秸秆，以提高玉米秸秆在热压水中液化制备生物油的转化率。考察了预处理条件对玉米秸秆的组成和结构变化以及生物油产率的影响。结果表明，酸-次氯酸盐预处理改变了玉米秸秆的主要成分和物理结构，有效地提高了生物油的产率。较短的停留时间有利于总生物油产物的生成，而较长的时间则导致产物的裂化。高载水率有利于总生物油和水溶性油的高收率。GC-MS 分析表明，水溶性油和重油是 C(5-10)和 C(8-11)有机化合物的复杂产物。
