沥青基活性炭纤维的制备及其对NO的催化氧化  

Preparation of Pitch-based Activated Carbon Fibers and Their Catalytic Oxidation Performance for NO

作　　者：刘鹤年[1] 黄正宏[1] 王明玺[1] 康飞宇[1] 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《材料科学与工程学报》2011年第3期327-330,354,共5页Journal of Materials Science and Engineering

基　　金：中日国际科技合作资助项目(2008DFA51410);新世纪优秀人才支持计划资助项目(NCET-10-0496)

摘　　要：以沥青基炭纤维为原料,用水蒸气活化的方法制备了三种不同比表面积的活性炭纤维,并采用氮吸附法和拉曼光谱对活性炭纤维进行了表征。本文研究了活性炭纤维在常温下对模拟空气中50 ppm NO的催化氧化性能,结果表明,活性炭纤维可将NO部分催化转化为NO2,较低比表面积的活性炭纤维因为其较窄的孔径分布和较大的类石墨微晶有利于对NO的催化氧化。Three activated carbon fibers（ACFs） with different specific areas and pore structures were derived by activating pitch-based carbon fibers with steam,the nitrogen adsorption/desorption method and Raman spectroscopy were used to characterize the ACFs.The catalytic oxidation of NO was conducted with NO inlet concentration of 50 ppm under 30℃.Results show that NO can be oxidized into NO2 over ACFs effectively.Due to its narrower pore size distribution and larger graphite microcrystallites,ACF with lower specific surface area possesses higher catalytic oxidation ability for NO.

关 键 词：水蒸汽活化 活性炭纤维 一氧化氮 催化氧化 

分 类 号：TQ032.4[化学工程]