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The variation of carrier gas viscosities with temperature

✍ Scribed by Hinshaw, John V. ;Ettre, Leslie S.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
967 KB
Volume
20
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

After describing simplified equations exspressing the temparature dependency of the viscosity of carrier gases (helium, nitrogen and hydrogen ) relative to a base value, absolute relationships based on the kinetic theory of gases are discussed. Comparative data obtained using various calculation methods are given and are compared to measured values. Based on the kinetic relationshipsm, of viscosity. Finally, the influence of pressure on the viscosity is also briefly discussed. As a supplement, Viscosity data are tabulated for the three gases in the range of 0Β°C to 400Β°C in increments of 2 K, calculated using the kinetic relationships.

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## Abstract A second‐order non‐linear partial different equation was derived to describe the dependence of carrier gas pressure in the column on the column distance and the time under temperature programmed conditions. This equation was solved numerically by the modified finite difference method fo