摘要
通过实验获得了填炭纸在液氮温度下对N2和H2两种气体的等温吸附线，结果表明：填炭纸对N2的吸附效果非常好，对H2的吸附效果较差，相同平衡压力下对N2的吸附量比对H2的吸附量高出1～2个数量级，且在填炭纸外包上绝热材料能大大提高其对气体的吸附能力，尤其是对N2的吸附量能提高1-2个数量级，对H2的吸附量也能提高1倍以上，填炭纸对H2的吸附效果是活性炭的3—15倍。用Temkin吸附式对等温吸附线进行拟合，得到了填炭纸在10^-4～10Pa范围内适用的对N2和H2两种气体的等温吸附方程式。
The adsorption isotherms of 512 and H2 on the carbon-filled paper at the liquid nitrogen were experimental- ly evaluated. The results show that when it comes to the adsorption on the carbon filled paper, nitrogen considerably out- performs hydrogen. For example, at a given equilibrium pressure, its adsorption capacity of N2 was found to be 1- 2 orders of magnitude higher than that of H2.Moreover, a good thermal insulation of the carbon-filled paper increased the adsorp- tion capacity of N2 by 1- 2 orders of magnitude, and/or at least doubled the adsorption capacity of H2, respectively. We found that the carbon-filled paper physically adsorbed 2 to 14 times more H2 than activated carbon did. In addition,the N2 and H2 adsorption isotherm formulae,valid in the pressure range from 10- 1 Pa to 10 Pa.were obtained hv data fitting.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2013年第6期547-551,共5页
Chinese Journal of Vacuum Science and Technology
关键词
填炭纸
液氮温度
等温吸附线
吸附量
Carbon filled paper, Liquid nitrogen temperature, Adsorption isotherm, Adsorption capacity
