草原有毒植物狼毒水解制备糠醛.pdfVIP

experimental conditions of the sulfuric acid concentration, liquid to solid ratio to identified the two-step testing process and the most suitable conditions. The results show that the concentration of sulfuric acid produce the most obvious impact on the yield of furfural. Second, it is the amount of titanium dioxide as solid catalyst. The high temperature activation can effectively improve the catalytic effect of titanium dioxide. At atmospheric pressure, the hydrolysis of Chamaejasme obtain furfural yield of 8.79%, and the effective utilization rate of 62.12% of hemicellulose, in Conditions of 20 mesh chamaejasme particles as raw materials, sulfuric acid of the mass fraction of 35% and titanium dioxide of activation of the high temperature of 700 ℃for 1h as a catalyst, and Liquid-solid ratio of 60mL / g, solid-solid ratio of 2.5g / g. When the concentration of sulfuric acid down to a certain extent, hemicellulose hydrolysis rate decreased, while cellulose can still be hydrolyzed to fermentable sugars, in the two-step method. First, conduct hydrolysis of three hours, using 2% of the mass fraction of sulfuric acid. After filtration, the filtrate containing fermentable sugar quality Accounting for the dry chamaejasme 44%, can be used to ferment ethanol. Residue re-use of one-step conditions for preparation of furfural, the last furfural yield of 6.24%. The two-step method effective use cellulose and hemicellulose in chamaejasme. Keywords: toxic plants; chamaejasme; hydrolysis; furfural; III 万方数据 目 录 中文摘要 I 英文摘要 II 第1 章 文献综述 (1) 1.1 狼毒的研究现状 (1) 1.2 木质纤维能源 (3) 1.3 糠醛工业发展 (5) 1.4 本文内容 (8) 第2 章 实验分析方法 (10) 2.1 狼毒植株的