system was added to the test reactor to allow operation at higher pressures a 12 inches u00d7 3 4 inch i d hastelloy c reactor in a three zone electric furnace identical to the reactor used in examples 1 13 was used the product gas also passed through a recirculating koh scrubber and drierite bed to an automatic on line sample valve and into an hp 5890 gas chromatograph equipped with a capillary column and fid this system differed from that of the previous examples in that a back pressure regulator was provided between the reactor and the scrubber and two liquid feed pumps these were milton roy model a771 257 pumps with teflon diaphragms and a capacity of 26 ml min the pumpheads were cooled to about 5 u00b0 c the hf pressure was increased to about 40 psig with helium the two feed streams were vaporized separately in hastelloy tubes wrapped with heat tape the cr ni alf 3 catalyst was loaded and activated as described in example 7 above hf and 142b were fed at a molar ratio of 3 2 1 for a 7 second contact time at 100 psig the temperature profile was controlled to simulate an adiabatic reactor with an inlet temperature of 120 u00b0 c and an outlet temperature of 325 u00b0 c conversion was 100 and selectivity to 143a was 100 next the 142b feed rate was increased and the hf feed rate was decreased to change the hf 142b molar ratio to 2 5 1 while maintaining all the other conditions the same conversion and selectivity were still both 100 finally the hf.