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US 2024/0351004 A1Published application
Catalyst and process for the dehydrogenation of alkanes to olefins
AssigneeDow Global Technologies LLC
InventorsGlenn Pollefeyt, Kevin Blann, Daniela Ferrari, Alexey Kirilin, Adam Chojecki, Cheng L. Chung, Andrzej Malek
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Abstract
An oxidative dehydrogenation catalyst having: a structure having a formula MovVwNbyBizOx, where v is 1, w is from 0.1 to 0.5, y is from 0.001 to 0.3, z is from 0.01 to 0.3, and x is the oxygen content required to charge-balance the structure. The oxidative dehydrogenation catalyst has a Pba2-32 space group, characterized by reflections determined with Cu—Kα X-ray diffraction (XRD) as follows.
Claims15
An oxidative dehydrogenation catalyst comprising:
- a structure comprising a mixed oxide of molybdenum (Mo), vanadium (V), niobium (Nb), and bismuth (Bi) having a formula MovVwNbyBizOx, wherein
- v is 1, w is from 0.1 to 0.5, y is from 0.001 to 0.3, z is from 0.01 to 0.3, and x is an oxygen content required to charge-balance the structure,
- the oxidative dehydrogenation catalyst has a crystallographic structure with the Pba2-32 space group, characterized by reflections determined with Cu—Kα X-ray diffraction (XRD) as follows:
- 2θ
- Rel.
- (±0.3º)
- Intensity (%)
- 5.3
- 0.2-8
- 6.6
- 1.5-15
- 7.84
- 2.5-45
- 8.95
- 4-21
- 22.17
- 100
- 27.2
- 20-50
- 28.1
- 10-30
18 more elements
A method for forming an oxidative dehydrogenation catalyst, the method comprising:
- adding a molybdenum-containing compound, a vanadium-containing compound, a bismuth-containing compound, a niobium-containing compound, and one or more organic acids to a mixture of alkylene glycol or alcohol amine and water to form a starting mixture;
- treating the starting mixture by hydrothermal synthesis at a hydrothermal synthesis temperature that is from 180° C. to 220° C.;
- and
- separating MovVwNbyBizOx from retained liquids,
- wherein the starting mixture comprises at least one of molybdenum trioxide (MoO3) and vanadium pentoxide (V2O5).
2 more elements
Dependencies are inferred from the claim text.