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木质纤维素制备乙醇最关键的步骤是使纤维素水解成可发酵糖,但目前纤维素水解效率很低,是生物质能源化利用的瓶颈。依据活性染料染色纤维素类织物具有“活性脆损”的性质提出一种新思路——以化学改性的方法改变纤维素的结晶结构从而提高其水解效率。采用三聚氰氯与氨基丙酸、氨基乙磺酸中的-NH2发生亲核取代反应,制备含有不同水溶性基团的三聚氰氯衍生物作为木质纤维素化学改性的改性剂。通过红外光谱、高效液相色谱质谱联用、13C NMR谱对其进行结构验证。
The most crucial step of lignocellulosic ethanol preparation is to hydrolyze cellulose into fermentable sugars. However, the current cellulose hydrolysis efficiency is very low, which is the bottleneck of biomass energy utilization. A new idea based on the properties of reactive dyes-dyed cellulosic fabrics that have “brittleness” is to modify the crystalline structure of cellulose chemically to improve its hydrolysis efficiency. Cyanuric substitution reaction of -NH2 in cyanuric chloride and aminopropionic acid and aminoethanesulfonic acid is adopted to prepare cyanuric chloride derivatives with different water-soluble groups as modifiers of lignocellulosic chemical modification. Their structures were confirmed by IR, HPLC and 13C NMR.