Impact of supercritical adsorption mechanism on research of hydrogen carrier  

作　　者：SUN Yan ZHOU Li SU Wei ZHOU YaPing 

机构地区：[1]Adsorption Laboratory of the Key State Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China

出　　处：《Chinese Science Bulletin》2007年第8期1146-1152,共7页

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.90510013,20336020,50376047 and 29936100)

摘　　要：Hydrogen storage receives the worldwide attention due to its importance in sustainable energy and the solution of greenhouse effect.Adsorption provides an efficient way to compress gases and,therefore, has been applied to the development of hydrogen storage technology.However,hydrogen is a super- critical gas at the temperature of engineering interest and follows a different adsorption mechanism compared to the sub-critical gases.The present work shows why only monolayer coverage mechanism functions at above-critical temperatures and what consequences will result in the application study. Although there are pros and cons to this point of view,understanding the adsorption mechanism is,in- deed,essential for the research of hydrogen storage method since it claims that any storage material based on adsorption will not satisfy the practical need of on board storage no matter how novel the material is.Hydrogen storage receives the worldwide attention due to its importance in sustainable energy and the solution of greenhouse effect. Adsorption provides an efficient way to compress gases and, therefore, has been applied to the development of hydrogen storage technology. However, hydrogen is a super- critical gas at the temperature of engineering interest and follows a different adsorption mechanism compared to the sub-critical gases. The present work shows why only monolayer coverage mechanism functions at above-critical temperatures and what consequences will result in the application study. Although there are pros and cons to this point of view, understanding the adsorption mechanism is, in- deed, essential for the research of hydrogen storage method since it claims that any storage material based on adsorption will not satisfy the practical need of on board storage no matter how novel the material is.

关 键 词：超临界吸附 机制 氢能载体 储氢材料 

分 类 号：TK91[动力工程及工程热物理] TG139.7[一般工业技术—材料科学与工程]