Gas-chromatographic separation of ortho- and parahydrogen on molecular sieves: Analysis, preparation, and measurement of catalytic conversion and of adsorption

Hydrogen-deuterium equilibration and ortho-parahydrogen conversion on molecular sieves

“…Under our operating conditions we did not find it necessary to heat the tubing between the copper oxide furnace and the thermal conductivity cell to avoid condensation as recommended by Bachmann, Bechtold, and Cremer. 28 The output from the thermoconductivity bridge was amplified by a Kintel amplifier (Model 195) and recorded on a Brown potentiometer (range 0-12 mv). The tubing was glass except in a few places where short Tygon connections were used.…”