High resolution argon adsorption isotherms for various zeolites
Ar isotherms (87.3 K) and N2 isotherms (77.4 K) were measured for two silicas with different silanol content and two MFI zeolites with different alumina (proton) content. Silanols or protons give the significant effect on N2 isotherms, but has little influence on Ar isotherms. Ar isotherms for seven zeolites of various micropore size were measured in the pressure range of p/po=10–7–0.99. Zeolites used are MFI (ZSM-5), MTW (ZSM-12), AFI (SSZ-24), AFI (AlPO-5), VFI (VPI-5) group A, and LTA (Type A-Ca), FAU (Type Y) group B. Group A zeolites have micropore channels without cage, while group B zeolites have the window and cage. It has been found that the Polanyi adsorption potential of Ar atoms for the group A zeolites is closely related with channel size, and the adsorption potential of the group B zeolites depends on both of cage size and channel size.
K. Nakai J. Sonoda M. Yoshida M. Hakuman H. Naono
BEL Japan, Inc., 1-9-1 Haradanaka, Toyonaka-shi, Osaka, 561-0807, Japan
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）