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The Rate of Thermal Diffusion in Mixtures of Carbon Dioxide and Hydrogen


Felbeck, George Theodore (1943) The Rate of Thermal Diffusion in Mixtures of Carbon Dioxide and Hydrogen. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/1901-1751.


An equation is derived for the time rate of change of composition of a binary gas mixture of initially uniform composition by thermal diffusion in an apparatus consisting of two chambers, one above the other, connected by a straight tube. The upper chamber is held at a given constant high temperature and the lower chamber at a given constant lower temperature.

Using the thermal conductivity method of analysis the rate of change of composition in the lower chamber has been measured for carbon dioxide-hydrogen mixtures for various compositions, pressures and higher temperatures.

From the experimental results and the derived equation, values are determined for the thermal diffusion coefficient, the ordinary or concentration diffusion coefficient and the temperature exponent for these coefficients.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Chemistry)
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Dickinson, Roscoe Gilkey
Thesis Committee:
  • Unknown, Unknown
Defense Date:1942
Record Number:CaltechTHESIS:01242017-150443602
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10025
Deposited By: Benjamin Perez
Deposited On:25 Jan 2017 15:43
Last Modified:10 Nov 2023 00:06

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