19 13 35co 0 56 0 55 0 59 0 54 0 61 0 64co sub 2 2 70 2 68 2 67 2 62 2 50 2 40h sub 2 o 4 84 5 25 5 01 5 26 5 34 5 17methane 74 49 74 11 73 77 72 03 69 38 67 13ethane 10 91 10 84 10 35 8 22 4 46 1 32ethylene 2 41 2 40 2 86 4 64 7 28 8 65c sub 3 39 s 0 21 0 24 0 24 0 21 0 34 0 49ethane conversion 12 00 25 00 59 00 87 00 ______________________________________ as can be seen from the above examples and tables the primary reaction of ethane was dehydrogenation to ethylene significant ethane conversions with a corresponding high selectivity to ethylene were achieved at temperatures of from 700 u00b0 to 850 u00b0 c temperatures outside this range may be employed depending upon available equipment the following examples illustrate the effects of various parameters on the practice of the invention through computer simulation of a process carried out in a reactor of 5 34 i d 0 127 m with a length of 200 m with appropriate scale up to the respective amounts of feed indicated in each example and simulation of unconverted feed recycle to more accurately model the commercial application of the invention it is to be understood however that the benefits and effects.