Permeability and Diffusivity of Hydrogen Through a Palladium Tube
- 1 June 1960
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 31 (6) , 615-617
- https://doi.org/10.1063/1.1931267
Abstract
A palladium diffusion tube which supplies high purity hydrogen was constructed for use in a high vacuum glass system. Temperatures of 213–379°C and back pressures from 1 to 2 atm H2 were used. In this range the permeability was proportional to the square root of pressure and an exponential function of reciprocal temperature. The tube had a long life if it was kept above 150°C while exposed to the gas.Diffusion coefficients obtained from the permeability experiments were in very good agreement with previous results. The equation for diffusion was DHPd = 4.31×10−3e−5600/RT. The large amounts of hydrogen obtained were reproducible to ±2% of the mean.Keywords
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