摘要
对加勒比松Na2S预处理硫酸盐─AQ法蒸煮过程纤维细胞各部位木素与Na2S的反应和溶出规律进行了研究．在本试验条件下，Na2S预处理段及硫酸盐─AQ蒸煮段脱木素反应活化能分别为41．1kJ／mol及94．2kJ／mol，其相对反应速率常数分别用下列方程式计算：KR1=e12.28－4952/T;KR2=e26020-11349/T.
The mechanism and kinetics of Na2S pretreatment Kraft-AQ pulping of Caribbean Pine (Pinus Caribbean Morelet) have been studied, the activation energy of delignification have been calculated. Under the experimental conditions, the delignification activation energy of the Na2S pretreatment stage and the Kraft-AQ cooking stage were 41. l kJ/mol and 94. 2 kJ/mol respetively. The relative rate constants can be calcu lated by the following equations: KR1 =e13.28-4952/T, KR2=e26.20-11349/T.
出处
《纤维素科学与技术》
CAS
CSCD
1996年第4期19-26,共8页
Journal of Cellulose Science and Technology
基金
国家教委博士学科点基金
关键词
硫酸盐
蒸煮
脱木素率
活化
纸浆
造纸
硫化钠
Na_2S pretreatment, Kraft-AQ pulping, delignification rate, activation energy
