糠醛渣制备活性炭及其在提纯甜菊糖苷中的应用  

Preparation of Activated Carbon from Furfural Residue and Its Application in Purification of Stevioside

作　　者：陶忠义 王玉叶 谢澳 朱陈吉 刘攀 黄顺进 Tao Zhongyi;Wang Yuye;Xie Ao;Zhu Chenji;Liu Pan;Huang Shunjin(School of Material and Chemical Engineering,Bengbu University,Bengbu 233030,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠233030

出　　处：《广东化工》2021年第9期85-86,91,共3页Guangdong Chemical Industry

基　　金：国家级大学生创新创业计划(201911305029)资助的研究成果。

摘　　要：本文以糠醛渣为原料,采用磷酸法制备了活性炭。研究结果表明,磷酸的浓度和活化温度是影响活性炭制备的重要因素。当浸渍所用磷酸的浓度为75%,活化温度为450℃,活化2 h的条件下获得的活性炭比表面积最大,为958 m^(2)/g。制得的活性炭可以有效吸附甜菊糖苷粗品中的杂质,通过活性炭的吸附作用可以使甜菊糖苷的总苷含量由87.65%提高至96.8%。Activated carbon was prepared with furfural residue by chemical activation of phosphoric acid. The results show that the concentration of phosphoric acid and activation temperature are important factors affecting the preparation of activated carbon. The best conditions to prepare activated carbon are phosphoric acid concentration 75%, activation temperature 450 ℃, and activation time 2 h. The maximum specific surface area of the activated carbon is 958 m^(2)/g. The activated carbon can effectively adsorb impurities in stevioside crude product, and the total content of stevioside is increased from 87.65% to 96.8%.

关 键 词：活性炭 磷酸 糠醛渣 提纯 甜菊糖苷 

分 类 号：TQ[化学工程]