用褐煤活化一步法制备活性炭的研究  

Study on the Preparation of Activated Carbon by One-Step Method of Carbonization-Activation with Lignite Coal

作　　者：罗道成[1] 郑李辉[1] 

机构地区：[1]湖南科技大学,湘潭411201

出　　处：《煤化工》2009年第5期25-28,共4页Coal Chemical Industry

摘　　要：介绍了以褐煤为原料,磷酸为活化剂,硫酸为添加剂,采用炭活化一步法制备活性炭的实验,讨论了浸渍温度、炭活化温度、炭活化时间、磷酸的浓度、磷酸溶液与褐煤的液固比、硫酸的用量等主要因素对活性炭性能的影响。结果表明,适宜的工艺条件为:浸渍温度为80℃,炭活化温度为400℃,炭活化时间为60min,磷酸质量分数为40%,磷酸溶液与褐煤的液固比为5:1,硫酸的用量为褐煤质量6%。在该适宜的工艺条件下制备的活性炭,强度为88.2%,比表面积为1 158.6 m2/g,吸碘值为946.5 mg/g,吸亚甲基蓝值为203.4mg/g。The experimental method of the preparation of activated carbon from lignite coal by using phosphoric acid as activator,sulfuric acid as additive and adopting one-stop method of carbonization-activation has been introduced.Effects of main factors such as the impregnation temperature of lignite coal,carbonization-activation temperature,carbonization-activation time,mass concentration of phosphoric acid,solution to solid mass ratio of phosphoric acid and lignite,and the added amount of sulfuric acid on the pro...

关 键 词：褐煤 炭活化 制备 活性炭 磷酸 硫酸 

分 类 号：TQ424.1[化学工程]