Accurate hydrogen sorption measurements via differential pressure analyses

Date

2005

Authors

Zielinski, J.
Coe, C.
Cooper, A.
Pez, G.

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Abstracts of the 2005 AIChE Annual Meeting, 2005, vol.2005, pp.1879-

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Zielinski, J. M., Coe, C. G., Cooper, A. C., Pez, G. P.

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2005 AIChE Annual Meeting (30 Oct 2005 - 4 Nov 2005 : Cincinnati, Ohio)

Abstract

A differential pressure adsorption unit (DPAU) has been constructed which is capable of accurately measuring isotherm data up to 2400 psia with as little as 50 mg of sample. This non-traditional adsorption/desorption method has been benchmarked by comparing hydrogen and methane isotherms measured with standard volumetric and gravimetric instruments on a NaA (4A) zeolite and an activated carbon at near ambient temperatures. The results from stability tests and a discussion of the mathematical analysis will be provided as well as a discussion of the unit's recent application in measuring credible hydrogen sorption isotherms on a series of well-defined single walled carbon nanotubes.

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Session: Experimental Methods in Adsorption II. Oral Presentation (261c)

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Copyright © American Institute of Chemical Engineers. All rights reserved

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