A dynamic calibration technique for temperature programmed desorption spectroscopy

A novel, rapid and accurate calibration procedure as a means for quantitative gas desorption measurement by temperature programmed desorption (TPD) spectroscopy is presented. Quantitative measurement beyond the linear regime of the instrument is achieved by associating an instantaneous calibrated mo...

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Bibliographic Details
Published in:Review of scientific instruments 2013-02, Vol.84 (2), p.025103-025103
Main Authors: Hurst, K E, Heben, M J, Blackburn, J L, Gennett, T, Dillon, A C, Parilla, P A
Format: Article
Language:English
Subjects:
08 HYDROGEN
Calibration
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Desorption
Flow rate
gas desorption
Hydrogen storage
MATERIALS SCIENCE
NANOSCIENCE AND NANOTECHNOLOGY
OTHER INSTRUMENTATION
Spectroscopy
Stoichiometry
Temperature programmed desorption
TPD
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Summary:A novel, rapid and accurate calibration procedure as a means for quantitative gas desorption measurement by temperature programmed desorption (TPD) spectroscopy is presented. Quantitative measurement beyond the linear regime of the instrument is achieved by associating an instantaneous calibrated molar flow rate of gas to the detector response. This technique is based on fundamental methods, and is independently verified by comparison to the hydrogen desorption capacity of a known standard metal hydride with known stoichiometry. The TPD calibration procedure described here may be used for any pure gas, and the accuracy is demonstrated for the specific case of hydrogen.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4770115