Mixed metal oxide catalyst containing tantalum for ODH of ethane
AssigneeNOVA Chemicals (International) S.A.
InventorsDavid Sullivan, Vasily Simanzhenkov, Yoonhee Kim, Marie Barnes, Bolaji Olayiwola
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Abstract
A catalyst, useful for oxidative dehydrogenation of ethane, comprising molybdenum, vanadium, tellurium, tantalum, and oxygen, prepared using a stage hydrothermal synthesis procedure, is provided. The catalyst comprises from 30 to 50 wt. % amorphous content and may be combined with a support/carrier material to form a catalyst material. The described catalysts and catalyst materials demonstrate high selectivity for ethylene at higher temperatures, show little to no decline in conversion and selectivity over time, and do not appear to be sensitive to low residual oxygen concentrations.
Claims19
A catalyst having the formula:
- MoaVbTecTadOx
- wherein:
- a is 1.0;
- b is 0.35 to 1.0;
- c is 0.1 to 1.0;
- d is 0.06 to 1.0;
- and
- x is a number to at least satisfy the valence of the catalyst;
- and
- wherein the amorphous content of the catalyst is 30 wt. % to 50 wt. %.
A process for the oxidative dehydrogenation of ethane, the process comprising contacting a gaseous feed comprising ethane and oxygen with a catalyst in a reactor to produce an effluent comprising ethylene, wherein the catalyst has the formula:
- MoaVbTecTadOx
- wherein:
- a is 1.0;
- b is 0.35 to 1.0;
- c is 0.1 to 1.0;
- d is 0.06 to 1.0;
- and
- x is a number to at least satisfy the valence of the catalyst;
- and
- wherein the amorphous content of the catalyst is 30 wt. % to 50 wt. %.
Dependencies are inferred from the claim text.