磷酸活化软木制备活性炭  

Preparation of activated carbons from cork by chemical activation with H3PO4

作　　者：徐绘[1] 雷亚芳[2] 冯宏伟[3] XU Hui;LEI Yafang;FENG Hongwei(College of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,China;College of Mechanical and Electronic Engineering,Northwest A&F University,Yangling 712100,China;College of Energy Engineering,Yulin University,Yulin 719000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]西北农林科技大学机械与电子工程学院,陕西杨凌712100 [3]榆林学院能源工程学院,陕西榆林719000

出　　处：《化工科技》2020年第5期26-29,共4页Science & Technology in Chemical Industry

基　　金：陕西省自然科学基础研究计划项目(2020JQ-901)。

摘　　要：以软木粒子为原料,磷酸为活化剂,用化学活化法制备软木活性炭。研究了活化温度、浸渍比[m(磷酸)∶m(软木)]、φ(磷酸)等不同的工艺条件对软木活性炭的w(灰分)、得率、吸附性能的影响。实验得出对活性炭吸附性能影响最大的是活化温度,其次是浸渍比和φ(磷酸)。磷酸活化软木制备活性炭的w(灰分)均低于2%,w(灰分)最小值达0.56%。采用磷酸活化制备软木活性炭较优的工艺条件为m(磷酸)∶m(软木)=2.0,φ(磷酸)=25%~35%,活化温度350~400℃。The activated carbon obtained by H 3PO 4 activation of cork and the effect of three experimental parameters on the adsorption capacity of the samples were studied.The results show that activation temperature has significant influence on adsorption performance of cork activated carbon,followed by impregnant concentration and H 3PO 4/cork weight ratio.The obvious advantage of cork activated carbon is that the ash content is very low(between 0.56%and 2.0%).Base on experiment results,the preferable technologic conditions of preparing activated carbons with cork are H 3PO 4/cork weight ratio of 2.0,a 25%~35%solution of H 3PO 4,activation temperature of 350~400℃.

关 键 词：活性炭 磷酸 软木 工艺 

分 类 号：TQ424.19[化学工程]