Low-temperature adsorption of hydrogen on nanoporous aluminophosphates: effect of pore size.
Several nanoporous aluminophosphates (AlPOs) have been used to analyze the effect of pore diameter on the hydrogen adsorption characteristics. The heat of adsorption and adsorption capacity per unit micropore volume increase with decreasing pore size. AlPOs with smaller micropores favorably adsorb hydrogen at relatively low pressures. This work demonstrates that small pore size and large micropore volume are beneficial for high hydrogen uptake.
Jhung
Sung Hwa
SH
Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology (KRICT), P.O. Box 107, Yusung, Daejeon 305-600, Korea. sung@krict.re.kr
Kim
Hye-Kyung
HK
Yoon
Ji Woong
JW
Chang
Jong-San
JS