combination of a 10 u2032 304 8 cm u00d7 u215b u2033 0 32 cm stainless steel 60 80 mesh 0 25 0 18 mm molecular sieve 13x column used to separate o 2 n 2 and co and a 2 u2032 61 cm u00d7 u215b u2033 0 32 cm stainless steel 80 100 mesh 0 18 0 15 mm haysep u00ae a co polymer of divinylbenzene and n vinyl 2 pyrollidone column used to separate h 2 o and co 2 helium was used as a carrier gas for all columns analyses on the column systems was carried out using samples taken from a 500 microliter sample loop the gc was programmed to control the column temperatures in a manner such that a total analysis could be completed in 15 45 minutes the response factors for the compounds of interest were determined using sample loop injections of gases from standardized purchased mixtures following the analysis of feed gases samples of reacted gases are taken at each of three temperatures 300 u00b0 c 400 u00b0 c 500 u00b0 c and analyzed as before the test was completed by taking a final feed gas sample for analysis the data was then compiled and calculations carried out to determine the conversion of cos o 2 and co and the selectivities to co 2 results of catalyst testing for examples 1 to 14 are shown in table 1 results of catalyst testing for comparative examples a to e are shown in table a in both tables ct represents contact time commercially available cucl 2 supported on al 2.