Frequency change of a quartz crystal microbalance at the supercritical condition of carbon dioxide

The frequency change of a quartz crystal microbalance was examined at 40 °C and pressures up to 15 MPa with He, N 2, and C0 2 as a pressurizing medium. The frequency largely decreased near the critical point of the C0 2. The change was caused by the rapid increase of the weight of C02 physically ads...

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Bibliographic Details
Published in:The Journal of supercritical fluids 1994-12, Vol.7 (4), p.289-292
Main Authors: Otake, Katsuto, Kurosawa, Shigeru, Sako, Takeshi, Sugeta, Tsutomu, Hongo, Masaru, Sato, Masahito
Format: Article
Language:English
Subjects:
adsorption
quartz crystal microbalance
resonance frequency
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Summary:The frequency change of a quartz crystal microbalance was examined at 40 °C and pressures up to 15 MPa with He, N 2, and C0 2 as a pressurizing medium. The frequency largely decreased near the critical point of the C0 2. The change was caused by the rapid increase of the weight of C02 physically adsorbed on the evaporated silver electrodes surface.
ISSN:0896-8446
1872-8162
DOI:10.1016/0896-8446(94)90017-5