摘要
将四(2,4-二氯-1,3,5-三嗪基)氨基钴酞菁以共价键形式键合在活性碳纤维(ACF)载体上,制得了活性碳纤维负载钴酞菁催化剂(ACF-CoPc),采用热重分析、原子吸收光谱和氮气等温吸附法对其进行了表征。原子吸收光谱测得金属酞菁的负载量为5.26μmol/g。氮气等温吸附法测得ACF-CoPc的比表面积为1235.9m2/g,孔径分布以2nm左右的小孔为主。以2-巯基乙醇为催化对象,采用超高效液相色谱研究了ACF-CoPc的催化氧化性能。结果表明ACF-CoPc对2-巯基乙醇具有很好的催化氧化性能,反应4h时对2-巯基乙醇的去除率高达100%,氧化产物为2,2’-二硫二乙醇。而且催化剂ACF-CoPc经6次循环使用后,对2-巯基乙醇的去除率没有持续下降,这表明该催化剂具有良好的重复使用性。
ACF-CoPc was prepared by immobilizing cobalt tetra（2,4-bichloro-1,3,5-triazine） aminophthalocyanines on the modified activated carbon fibers by covalent bond,characterized by thermogravimetric analysis,atomic absorption spectrometry and nitrogen isothermal adsorption.The loading amount of CoPc was 5.26μmol/g.The analysis by nitrogen isothermal adsorption indicated that specific surface area of ACF-CoPc was 1235.9m2/g,and the pore size distributions was mainly micropore of about 2nm.Ultra Performance liquid chromatography was adopted to investigate the catalytic ability of 2-mercaptoethanol by ACF-CoPc.The results demonstrated that the removal rate of 2-mercaptoethanol was up to 100% by ACF-CoPc,and the product was 2-hydroxyethyl disulfide.In addition,the catalytic ability of ACF-CoPc remained essentially constant after six repetitive experiments,suggesting that ACF-CoPc could be reused.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第12期2171-2175,2180,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51003096)
高等学校博士学科点专项基金资助项目(20093318120003)
浙江省自然科学基金资助项目(Y4080341)
关键词
催化氧化
钴酞菁
活性碳纤维
2-巯基乙醇
catalytic oxidation
cobalt phthalocyanine
activated carbon fiber
2-mercaptoethanol
