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Hydrogen adsorption measurements by the dynamic pulse method
Author(s) -
Wanke S. E.,
Lotochinski B. K.,
Sidwell H. C.
Publication year - 1981
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450590314
Subject(s) - hydrogen , adsorption , pulse (music) , desorption , materials science , dispersion (optics) , analytical chemistry (journal) , metal , catalysis , chemistry , chromatography , optics , metallurgy , organic chemistry , physics , detector
Hydrogen adsorption uptakes by supported metal catalysts are commonly measured by the dynamic pulse technique. The pulse technique has several experimental advantages over the conventional static method, but the hydrogen uptakes measured by the pulse method are not easily interpreted. The measured pulse adsorption uptakes are influenced by the desorption of weakly adsorbed hydrogen. We found that the desorption of hydrogen at room temperature depends on the metal and the metal dispersion. We also found that hydrogen uptake measurements by the dynamic pulse method under well defined conditions are very reproducible.