工业碱木素的纯化方法——甲酚-硫酸法  

Purification of Industrial Alkali Lignin by the Cresol and Sulfuric Acid Method

作　　者：何伟[1] 沙萍[1] 邰瓞生[1] 

机构地区：[1]南京林业大学林化系

出　　处：《中国造纸》1991年第3期8-12,共5页China Pulp & Paper

摘　　要：本文介绍以甲酚和硫酸纯化工业碱木素的新方法。与Lundquist提出的液-液抽提法相比,此法使纯化麦草碱木素得率提高20％。而两种方法分离木素的总糖含量,化学结构的表征和分子量都无明显差别。对于反应时间、温度、甲酚和硫酸的用量以及硫酸浓度对纯化木素得率、分子量和总糖含量的影响也进行了研究。A new method for purification of industrial alkali lignin has been introduced. This procedure increases yield of the purified soda lignin from wheat straw by 20% as compared with the liquid-liquid extraction by Lundquist. There are no obvious differences in total sugar content, in chemical structural characteristics and in molecular weight between the lignins purified by the two methods. The effect of reaction time, temperature, amount of cresol and sulfuric acid, and concentration of sulfuric acid on lignin yield, molecular weight and sugar content were studied.

关 键 词：碱木素 纯化 甲酚-硫酸法 造纸废液 

分 类 号：TS749.7[轻工技术与工程—制浆造纸工程]