SUPERCRITICAL ADSORPTION MECHANISM AND ITS IMPACT TO APPLICATION STUDIES
Hydrogen storage and methane capture receive the worldwide attention due to their importance in sustainable energy and environment protection. Adsorption provides an efficient way to compress gases, therefore, has been applied for the development of hydrogen storage technology. It also provides an efficient way to separate gas mixtures,therefore, is being studied for the capture of methane from its mixture with air in order to avoid methane emission. However, both hydrogen and methane are supercritical gases at the temperature of engineering interest and follow a different mechanism of adsorption compared to that of sub-critical gases. The present work shows why only monolayer coverage mechanism functions at above-critical temperatures. Pros and cons to this point of view are presented. This understanding of the adsorption mechanism is essential for the research of hydrogen storage since the mechanism claims that any storage method based on adsorption will not satisfy the commercial requirement for hydrogen storage no matter how novel the material is. On the other hand, understanding the adsorption mechanism may help to follow a successful route in the research. Development of an efficient adsorbent for methane capture from its mixture with air is such an example.
L.ZHOU Y.SUN W.SU Y.P.ZHOU
High Pressure Adsorption Laboratory, School of Chemical Engineering & Technology Tianjin University, Tianjin 300072, China
国际会议
天津
英文
112-126
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）