磷酸法制备木质煤基成型活性炭的工艺条件研究  

Study on Preparation of Shaped Activated Carbon from Coal and Wood Chips by Phosphoric Acid

作　　者：陆永玉[1] 周建斌[2] 王静叶 沈晨[1] 

机构地区：[1]南京林业大学化学工程学院,南京210037 [2]南京林业大学材料科学与工程学院,南京210037

出　　处：《科学技术与工程》2014年第12期257-261,共5页Science Technology and Engineering

基　　金：林业公益性行业科研专项项目(201304611);林业公益性行业科研专项项目(201004001);国家重点基础研究发展计划(973)项目(2010CB732205);国家科技支撑计划项目(2012BAD30BOO);"十二五"农村领域国家科技计划项目(2011BAD15B05-04)资助

摘　　要：以煤粉和木屑为原料,不添加粘接剂,采用磷酸活化法制备了木质煤基成型活性炭。利用单因素分析法对成型工艺和活化工艺进行了研究。结果表明:成型炭质前驱体加工最佳工艺为磷酸浸渍浓度30%、木屑:煤粉:磷酸质量比为1∶4∶3,制得的成型炭质前驱体强度为93%。活化工艺为:浸渍比1∶1、活化温度550℃、活化时间2.5 h。成型活性炭亚甲基蓝吸附值为210 mg·g-1、碘吸附值为865 mg·g-1,比表面积1 134 m2·g-1。该方法为煤基成型活性炭的制备找到了新的途径。Shaped activated carbon （AC） was prepared from coal and wood chips only by activation of phos- phoric acid. The shaping conditions and the activation conditions upon the adsorption properties of shaped AC were studied by the single factor analysis . Results show that the technological conditions for preparing shaping carbon precursor by these conditions as follows： 30% phosphoric acid mass concentration , 1：4：3 （w/w） wood chips to coal to phosphoric acid. The strength of shaping carbon precursor are 93%. The technological conditions for pre- paring shaping AC by these conditions as follows：1： 1 （w/w） phosphoric acid to shaping carbon precursor , 550 ℃ activation temperature and 2. 5 h activation time . The methylene blue and iodine adsorption value of the shaped AC are 210 and 865 mg . g-1, respectively. The surface area was 1 134 m2 .g-1 . It is showed that the preparation of shaped activated carbon form coal is a new way.

关 键 词：活性炭 煤粉 木屑 磷酸 成型 

分 类 号：TQ424.19[化学工程]