Analysis of low temperature chromatographic separation of methane-propane mixtures with N-decane on celite
Rangel, Enrique Trevino
Master of Science
An outline of the history of chromatography is presented, reviewing briefly the existing theories. The theory of Jame sand Martin for gas liquid partition chromatography and the extension to their theory by Litlewood and porter are Derived. The equipment to investigate the variables involved in gas-liquid partition chromatography (GLPC) was built and a large number of experiments were performed to study these variables. An analysis of the data results in the verification of the conclusions of other investigators. Investigations at temperature below the freezing point of the fixed phase suggests the concurrent action of absorption and adsorption chromatography on solid surfaces. Data were taken to permit the calculation of equilibrium vaporization constants (K values) from GLPC measurements. The constants so obtained follow closely the predicted values taken from the charts. A column with spherical beads from 0.07 to 0.028 mm in diameter indicated that the Klinkenberg effect did not contribute to the separation of methane from propane and probably has no effect on the separation in practical columns. Preliminary investigations suggest the application of partition chromatographic principles to gas hydrate studies.