High precision volumetric gas adsorption apparatus

被引：10

作者：

Nakai, K ^{[1
]}

Sonoda, J ^{[1
]}

Iegami, H ^{[1
]}

Naono, H ^{[1
]}

机构：

[1] BEL Japan Inc, R&D Dept, Yodogawa Ku, Osaka 5320025, Japan

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2005年 / 11卷 / Suppl 1期

关键词：

volumetric method; continuous dead volume measurement; high reproducibility; surface area;

D O I：

10.1007/s10450-005-5928-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have developed anew volumetric gas adsorption apparatus into which the dead volume measurement cell (dVd cell) is incorporated (cf. Fig. 1). The dVd cell measures continuously the change of dead volume during adsorption measurement. The dead volume at every step of adsorption measurement is used in calculation of adsorbed amount of nitrogen gas. Introduction of the dVd cell makes the level-control system of liquid nitrogen unnecessary, and enables the adsorption error due to the minute fluctuation of liquid-nitrogen level small. The sensitivity and reproducibility of our new adsorption apparatus have been examined using some certified materials (cf. Fig. 4).

引用

页码：227 / 230

页数：4