文献类型：期刊文献

中文题名：响应面法优化设计木质素基活性炭的制备

英文题名：Optimization of Design of Lignin-based Activated Carbon Based on Response Surface Methodology

作者：侯兴隆[1,2] 郭奇[1] 建晓朋[1] 吴迪超[1] 许伟[1] 刘军利[1]

第一作者：侯兴隆

机构：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业和草原局林产化学工程重点实验室,江苏省生物质能源与材料重点实验室,江苏南京210042;[2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037

年份：2020

卷号：40

期号：3

起止页码：115-122

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家重点研发计划资助项目(2019YFB1503804);中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2018SZ011);江苏省333人才项目(BRA2019293)。

语种：中文

中文关键词：磷酸活化;木质素;活性炭;中孔

外文关键词：phosphoric acid activation;lignin;activated carbon;mesopores

分类号：TQ35

摘要：以玉米芯木质素为原料,采用磷酸活化法制备木质素基活性炭;并以亚甲基蓝吸附值为考察指标,通过Plackett-Burman设计、最陡爬坡实验和中心复合设计方法,探究了不同工艺条件在活性炭制备过程中的交互作用及最优工艺参数。结果发现:Plackett-Burman设计筛选得到的3个最重要因素分别为浸渍比、活化温度和活化时间;通过最陡爬坡实验确定了其最佳中心点区域;中心复合设计(CCD)和响应面分析(RSM)得到的最佳工艺条件为浸渍比3∶1(g∶g)、活化温度563℃和活化时间2.75 h。通过验证实验表明:在上述优化工艺及磷酸质量分数60%、浸渍时间12 h、浸渍温度90℃条件下,木质素基活性炭的孔径主要集中在2~10 nm,BET比表面积为1436 m2/g,总孔容为1.041 cm3/g,微孔孔容为0.3856 cm3/g,亚甲基蓝吸附值为240 mg/g。
Lignin-based activated carbon was prepared from corn cob lignin by using phosphoric acid activation method.Taking methylene blue adsorption value(MB)as the index,the interaction during the preparation of activated carbon were explored by Plackett-Burman design,the steepest climbing test,and the center composite design method.The results showed that the three most important factors obtained by Plackett-Burman design were immersion ratio,activation temperature,and activation time.The best center region was determined through the steepest climbing test.The optimal process conditions obtained by the center composite design(CCD)and response surface analysis(RSM)were impregnation ratio 3∶1(g∶g),activation temperature 563℃,and activation time 2.75 h.The verification experiment was performed under the above optimized process of 60%phosphoric acid mass fraction,12 h immersion time,90℃immersion temperature.The pore size of the lignin-based activated carbon was mainly concentrated at 2-10 nm,the BET specific surface area was 1436 m2/g,total pore volume was 1.041 cm3/g,the micropore pore volume was 0.3856 cm3/g and the methylene blue adsorption value(MB)was 240 mg/g.