林产化学与工业2017，Vol.37Issue(2)：49-56,8.DOI:10.3969/j.issn.0253-2417-2017-02-006
乙基纤维素包覆成型活性炭的制备及其性能研究
Preparation and Properties of Formed Activated Carbon Coated by Ethyl Cellulose
摘要
Abstract
The coated liquid was prepared with ethyl cellulose as coating material and ethanol as the solvent by dissolving at 50 ℃.In order to prepare activated carbon products coated by EC,the coated liquid was uniformly sprayed on the surface of formed activated carbon before heat treatment.The influences of the mass fraction of coated liquid, spray volume and heat treatment temperature on the strength and adsorption properties of coated activated carbon were studied.It was found that under the mass fraction of coated liquid was 4.23%,the weight of activated carbon was 30 g,the spray volume was 20 mL,and the heat treatment temperature was 140 ℃,the strength of the coated activated carbon reached 93.66% and increased 7.35 percentage points compared with that of raw activated carbon and the butane working capacity reached 86.0 g/L and decreased by 9.6 g/L, a thin film with thickness 3-4 μm was formed on the surface of the activated carbon.EC coating did not change the pore structure of activated carbon, but it would affect the wet ability of activated carbon surface, the water contact angle of coated activated carbon was 89.76°, which of the raw activated carbon was 15.41°, and it meant the hydrophobic performance was significantly improved.The surface of the activated carbon products prepared by this method was smooth,no dust,and the shape kept well.关键词
成型活性炭/表面包覆/强度/水接触角Key words
formed activated carbon/surface coating/strength/water contact angle分类
化学化工引用本文复制引用
许伟,刘军利,缪存标,孙康,宋曜光..乙基纤维素包覆成型活性炭的制备及其性能研究[J].林产化学与工业,2017,37(2):49-56,8.基金项目
"十二五"国家科技支撑计划资助(2015BAD14B06) （2015BAD14B06）
