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AssigneeNOVA Chemicals (International) S.A.
InventorsVasily Simanzhenkov, Xiaoliang Gao, David Sullivan, Yipei Styles, Yoonhee Kim, Hanna Drag, Marie Barnes
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Mixed metal oxide catalysts having an amorphous content of not less than 40 wt. % are prepared by calcining the catalyst precursor fully or partially enclosed by a porous material having a melting temperature greater than 600° C. in an inert container including heating the catalyst precursor at a rate from 0.5 to 10° C. per minute from room temperature to a temperature from 370° C. to 540° C. under a stream of pre heated gas chosen from steam and inert gas and mixtures thereof at a pressure of greater than or equal to 1 psig having a temperature from 300° C. to 540° C. and holding the catalyst precursor at that temperature for at least 2 hours and cooling the catalyst precursor to room temperature.
A method for oxidative dehydrogenation of a mixed feed comprising one or more C2-4 paraffins and oxygen in a volume ratio from 70:30 to 95:5 at a temperature from 320° C. up to 385° C., a gas hourly space velocity of not less than 100 hr−1, and a pressure from 0.8 to 7 atmospheres comprising passing the mixed feed over a catalyst of formula
A method for oxidative dehydrogenation of a mixed feed comprising one or more C2-4 paraffins and oxygen in a volume ratio of the one or more C2-4 paraffins to oxygen from 70:30 to 95:5 at a temperature from 320° C. up to 385° C., a gas hourly space velocity of not less than 100 hr−1, and a pressure from 0.8 to 7 atmospheres comprising passing the mixed feed over a calcined catalyst of formula
Dependencies are inferred from the claim text.