乙醇催化裂解法制备高储氢量碳纳米管

Synthesis of carbon nanotube possessing high hydrogen storage capacity from catalytic pyrolysis of alcohol

采用乙醇催化裂解法制备碳纳米管,有效解决了以烃为碳源制备的碳纳米管的团聚、长度不可控、分离纯化复杂、得率低的难题。透射电镜和Raman光谱分析表明,使用乙醇催化裂解法可以直接制备纯度高、管长适中的离散碳纳米管。这种碳纳米管在600℃以下时不分解,吸附性能优异,在298℃、15MPa时最大吸氢量为6.90%,远高于以苯为碳源制备的碳纳米管的最大吸氢量(1.65%),已达到美国能源车用储氢系统的标准。

An alcohol-catalytic pyrolytic method was found to directly synthesize isolated carbon nanotube (CNT) with high purity and appropriate length demonstrated by TEM and Raman analyses, which effectively resolved some serious problems disturbing CNT prepared with hydrocarbon as carbon feeder, such as agglomeration, uncontrolled length, complicated process of separation and purification and very low yield. This sort of CNT doesn't decompose below 600°C and owns excellent adsorptive property with a 6.90% (mass ratio)hydrogen storage capacity at 298 K, 15 MPa, which is much higher than that of CNT with benzene as carbon feeder with only a 1.65% and has reached DOE energy standard of vehicular hydrogen storage.