OP-II-3

OP-II-3(Fig, 1 a, b) upon testing in conditions (C 2 H 6 flow 19.2 cm 3 /min; O 2 flow 4 cm 3 /min)being similar to those used earlier upon standard testing in the gas mixture (Fig. 2 a, b).Conversion,mmol/h per 1 g of cat.100806040200a.C 2 H 4C 2 H 6CO 2300 350 400 450Selectivity of etheneformation10,980,960,940,920,9b.300 350 400 450membraneTemperature, o CmembraneTemperature, o CFig. 1. EOD on the membrane Mo-V-Te-Nb-O x /Al 2 O 3 catalyst: (a) – ethaneconversion; (b) – selectivity of ethylene formation.Conversion,mmol/h per 1 g of cat.100806040200flow reactora.300 350 400 450Temperature, o CC 2 H 4C 2 H 6CO 2Selectivity of etheneformation10,980,960,940,920,9flow reactorgas mixture [75%С2Н6+25%О2]; 900 cm 3 /h4500 h -1b.300 350 400 450Temperature, o CFig. 2. EOD on the Mo-V-Te-Nb-O x catalyst in flowing mixture [75%C 2 H 6 +25%O 2 ]:(a) – ethane conversion; (b) – selectivity of ethylene formation.The catalytic data received upon variation of gas flow rates demonstrate thatrealization of EOD in the membrane mode, with separated gas flows, allows thepractical use of [ethane : O 2 ] ratios, which are absolutely prohibited in the gasmixtures on considerations of safety. The one-pass conversion of ethane can beraised from 50% for ([ethane + oxygen] mixture) to 70% for the membrane process atthe selectivity remaining on the level of ~95%.AcknowledgementsThis work was supported by the Program of Presidium RAS, project No.14.103