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US 11,648,536 B2Granted
Catalyst for oxidative dehydrogenation of butene and method for producing the same
AssigneeLG Chem, Ltd.
InventorsAra Cho, Young Chang Byun, Gyo Hyun Hwang, Jungup Bang, Cheolock Song
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Abstract
The present invention relates to a catalyst for oxidative dehydrogenation of butene and a method for producing the same. The catalyst for oxidative dehydrogenation of butene has a large amount of Mo—Bi phase acting as a reaction active phase on the surface, and therefore, can exhibit high catalytic activity, high conversion rate and high butadiene selectivity in the oxidative dehydrogenation of butene.
Claims3
A catalyst for oxidative dehydrogenation of butene, which is represented by the following Composition Formula 1,
- wherein a surface composition of the catalyst, measured by X-ray photoelectron spectroscopy (XPS), has a molar content of bismuth (Bi) that is higher than a molar content of cobalt (Co),
- MoaBibCoc(M1)d(M4)eOf [Composition Formula 1]
- in Composition Formula 1, Mo is molybdenum, Bi is bismuth, Co is cobalt, O is oxygen,
- M1 is one or more of potassium (K) and cesium (Cs),
- M4 is one or more of iron (Fe), manganese (Mn), and copper (Cu),
- a is from 9 to 25, b is from 0.5 to 2, c is from 1 to 10, d is from 0.01 to 1, e is from 0.5 to 5, and
- f is from 30 to 50,
- wherein the catalyst satisfies the following Calculation Formula 1
- BARS/BART>6, [Calculation Formula 1]
- in Calculation Formula 1
- BARS is the molar content of bismuth/the molar content of cobalt according to the surface composition of the catalyst, measured by XPS, and
- BART is a molar content of bismuth/a molar content of cobalt in the entire catalyst, measured by inductively coupled plasma optical emission spectroscopy (ICP-OES).
9 more elements
Dependencies are inferred from the claim text.