请关注官方微博
请关注官方微博
请关注官方微信
请关注官方微信号林产工业
     设为首页 | 加入收藏

  • ISSN 1001-5299    CN 11-1874/S
  • 邮发代号:2-141
  • 主办:中国林产工业协会 国家林业和草原局林产工业规划设计院
林产工业
  论文 本期目录 | 过刊浏览 | 高级检索 |
响应面优化酶解木质素酚化工艺研究
利用响应面法分析碱性条件下木质素酚化工艺中,木质素取代量、酚化时间、酚化温度、催化剂用量对响应值酚羟基含量的影响,以及各因素之间的交互作用,在给定的条件范围内,建立了各因素与响应值之间的数学模型,优化得到木质素酚化的理想工艺:木质素取代量达到63%,酚化温度为109 ℃,酚化时间为1.4 h,催化剂用量为苯酚用量的3.4 g。在此条件下,其酚羟基含量可达4.498 mmol/g。分析等高线图及响应曲面图详细描述了各个因素之间的交互关系,得出各个因素的影响主次顺序为酚化温度>酚化时间>催化剂用量>木质素取代率;各因素交互作用中,酚化温度与酚化时间的交互作用对酚羟基含量影响最显著。
北华大学材料科学与工程学院,吉林 132013
Study on Lignin Phenolyzation Process of Response Surface Optimization
In this paper, response surface methodology was used to analyze the effects of lignin substitution, phenolic time, phenolic temperature and catalyst dosage on the phenolic hydroxyl content of the response value and the interaction among various factors in the phenolic process of lignin under alkaline conditions. Within a given range of conditions, a mathematical model between each factor and response value was established to optimize the optimal process of phenolic lignin. The substitution amount of lignin was 63%, the phenolization temperature was 109 ℃, the phenolization time was 1.4 h, and the amount of catalyst is 34% of phenol. Under these conditions, the phenolic hydroxyl content can reach 4.498 mmol/g. By analyzing the contour plot and response surface plot, the interaction among the four factors was described in detail. It was concluded that the order of influence of the four factors was phenolation temperature > phenolation time > catalyst dosage > lignin substitution rate. The most significant effect of the interaction among the four factors on phenolic hydroxyl content was the interaction between phenolic temperature and phenolic time.
School of Materials Science and Engineering,Beihua University, Jilin 132013, China