Oxidative dehydrogenation catalyst compositions
AssigneeNOVA Chemicals (International) S.A.
InventorsVasily Simanzhenkov, Xiaoliang Gao, Marie Barnes, David Sullivan, Yoonhee Kim
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Abstract
Provided in this disclosure are catalyst compositions. The catalyst compositions include an oxidative dehydrogenation catalyst that includes a mixed metal oxide having the empirical formula: Mo1.0V0.12-0.49Te0.05-0.17Nb0.10-0.20AlcOd wherein c is from 0 to 2.0 and d is a number to satisfy the valence of the oxide. The compositions are at least 40 wt. % amorphous as measured by XRD. The disclosure also provides methods of making the compositions.
Claims17
A method of preparing a catalyst composition comprising
- providing a mixture comprising alumina, water, and an oxidative dehydrogenation catalyst precursor comprising a mixed metal oxide having the empirical formula:
- Mo1.0V0.12-0.49Te0.05-0.25Nb0.10-0.20Od
- heating the mixture comprising the oxidative dehydrogenation catalyst precursor, the alumina, and the water to remove at least 40 wt. % of the water to provide a pre-calcination catalyst composition, and
- calcining the pre-calcination catalyst composition to provide the catalyst composition having the empirical formula:
- Mo1.0V0.12-0.49Te0.05-0.25Nb0.10-0.20Al0.01-2.0Od
- wherein d is a number to satisfy the valence of the oxide, wherein the catalyst composition is from 60 wt. % to 80 wt. % amorphous.
A method of increasing the amorphous phase of a catalyst composition comprising an oxidative dehydrogenation catalyst comprising
- providing a mixture comprising the oxidative dehydrogenation catalyst, alumina, and water,
- heating the mixture comprising the oxidative dehydrogenation catalyst, the alumina, and the water to remove at least 40 wt. % of the water to provide a pre-calcination catalyst composition, and
- calcining the pre-calcination catalyst composition to provide the catalyst composition having the empirical formula:
- Mo1.0V0.12-0.49Te0.05-0.25Nb0.10-0.20Al0.1-2.0Od
- wherein d is a number to satisfy the valence of the oxide wherein the catalyst composition is from 60 wt. % to 80 wt. % amorphous.
Dependencies are inferred from the claim text.