摘要
研究了改性糠醛渣的制备过程和最佳改性条件。首先将糠醛渣进行预处理,然后在浓度为20%的氢氧化钠溶液中搅拌30 min,并静置18 h,再加入环氧氯丙烷,在一定条件下进行改性得到环氧氯丙烷改性糠醛渣。再根据反应时间,反应温度,溶液浓度,固液比确定最佳改性条件,结果表明:最佳改性条件为反应时间30 min,反应温度60℃,环氧氯丙烷浓度70%,固液比1︰4。改性后的糠醛渣吸附亚甲基蓝溶液时,去除率可达到98%。
The optimum preparation process and conditions of modified furfural residue were studied.The furfural slag was firstly pretreated,and then it was stirred in 20% sodium hydroxide solution for 30 min and laid for 18 h,at last epoxy chloropropane was added to prepare the modified furfural residue.Effects of reaction time,reaction temperature,solution concentration,ratio of solid to liquid on properties of modified furfural residue were investigated.The results show that,the best modification conditions are as follows： reaction time 30min,reaction temperature 60 ℃,epichlorohydrin concentration 70%,ratio of solid to liquid 1∶4;When the modified furfural residue is used to adsorb methylene blue solution,the removal rate can reach to 98%.
出处
《当代化工》
CAS
2013年第9期1222-1224,共3页
Contemporary Chemical Industry
关键词
改性糠醛渣
吸附
环氧氯丙烷
Modified furfural residue
Adsorption
Epoxy chloropropane
