氩气测定多种沸石的高精度等温吸附线

氩气测定多种沸石的高精度等温吸附线 K. Nakai*, J. Sonoda, M. Yoshida, M. Hakuman and H. Naono 日本拜耳公司BEL Japan, Inc., 1-9-1 Haradanaka, Toyonaka-shi, Osaka, 561-0807, Japan. E-mail: kazu@nippon-bel.co.jp 简介 本实验检测了两种不同硅烷醇成分的硅土和两种不同氧化铝（质子）成分的MFI沸石的氩气等温吸附（液氩87.3K）和氮气等温吸附（液氮77.4K）硅烷醇或质子含量变化对氮气吸附有显著影响，但对氩气吸附的影响非常小我们在相对压力p/po=1070.99的范围内对七种不同微孔大小的沸石进行了氩气的吸附测定这七种沸石分别是：MFI (ZSM-5)MTW (ZSM-12)AFI (SSZ-24)AFI (AlPO-5)VFI (VPI-5) [A组] 以及LTA (A型-Ca) FAU (Y型) [B组]A组沸石的微孔通道不含笼结构，而B组有笼结构和窗口效应研究发现：A组沸石氩气原子的Polanyi吸附势只与孔通道尺寸密切相关，而B组沸石氩气原子吸附势与笼尺寸和孔通道大小都相关 Prior to gas adsorption measurement, the zeolite samples were pretreated in vacuo at 623 K for 10 h. The adsorption isotherms of Ar at 87.3 K (boi领 point of liquid argon) and of N2 at 77.4 K (boi领 point of liquid nitrogen) were measured by BELSORP-max, which has three pressure transducers of 0.0133 kPa, 1.33 kPa and 133 kPa in full scale. From Zeolites to Porous MOF Materials the 40th Anniversary of International Zeol ite Conf erenc e 选自从沸石到多孔MOF材料 第40届国际沸石大会 R. Xu徐如人, Z. Gao,高滋 J. Chen and W. Yan闫文付 (Editors)等 . 2007 Elsevier B.V. All rights reserved. MicrotracBEL全自动三站比表面和孔隙分布仪BELSORP-Max