活性炭负载锰氧化物用于吸附甲醛  

Adsorption of formaldehyde by activated carbon loaded with manganese oxides

作　　者：姜良艳[1] 周仕学[1] 王文超 吴峻青[1] 卢国俭[1] 

机构地区：[1]山东科技大学化学与环境工程学院,青岛266510 [2]山东省煤田地质局山东煤炭质量检测中心,泰安271000

出　　处：《环境科学学报》2008年第2期337-341,共5页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金项目(No50574054);教育部留学回国人员科研基金项目(No2005383)~~

摘　　要：以活性炭为载体,利用浸渍法将KMnO4负载在活性炭上,再经热处理使其转化为锰氧化物(MnOx).研究了KMnO4溶液浓度和热处理温度对负载MnOx活性炭吸附甲醛效果的影响.结果表明,在KMnO4溶液浓度为0.079mol.L-1和热处理温度为650℃的条件下制得的负载MnOx活性炭,在浓度为600mg.L-1甲醛溶液中的甲醛吸附量可高达5.51mg·g-1.X射线光电子能谱(XPS)和傅立叶变换红外光谱(FTIR)测试表明,负载MnOx活性炭表面的碳原子和锰原子可对甲醛产生化学吸附.KMnO_4 was loaded on activated carbon by soaking and then was converted into manganese oxides （MnO_x） by heat-treatment. The effects of KMnO_4 concentration and heat-treatment temperature on the formaldehyde adsorption capacity of the activated carbon loaded with MnO_x were studied. The experimental results showed that the adsorption capacity of activated carbon soaked in 0.079 mol·L^-1 KMnO_4 solution and subsequently heat-treated at 650℃ was up to 5.51 mg·g^-1 from a 600 mg·L^-1 formaldehyde solution. The XPS and FTIR analyses suggested that formaldehyde was chemisorbed by the carbon and manganese atoms on the surface of the MnO_x-loaded activated carbon.

关 键 词：甲醛 活性炭 锰氧化物 吸附 氧化 

分 类 号：X131[环境科学与工程—环境科学]