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US 12,357,974 B2Granted
Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst
AssigneeLG Chem, Ltd.
InventorsJi Yeon Kim, Kyungyeon Kang, Jun Seon Choi
Life of this patent
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Abstract
There is provided an ammoxidation catalyst for propylene having a structure in which molybdenum (Mo) oxide is supported first, and an oxide of heterogeneous metals including bismuth (Bi) is supported later. Related methods of making and using the catalyst are also provided.
Claims17
An ammoxidation catalyst for propylene comprising:
- a silica carrier;
- and
- a metal oxide supported in the silica carrier;
- wherein the metal oxide as a whole has a composition satisfying the following Chemical Formula 1, and
- comprises a coating layer comprising molybdenum (Mo) oxide, one or more coating layers comprising heterogeneous metals, positioned on the coating layer comprising molybdenum (Mo) oxide-
- Mo12BiaFebAcBdCeDfOx [Chemical Formula 1]
- in the Chemical Formula 1,
- A is one or more elements of Ni, Mn, and Co,
- B is one or more elements of Zn, Mg, Ca, and Ba,
- C is one or more elements of Li, Na, K, Rb, and Cs,
- D is one or more elements of Cr, W, B, Al, Ca, and V,
- a to f, and x are respectively a fraction of atom and atomic group, a is 0.1 to 5, b is 0.1 to 5, c is 0.01 to 10, dis 0.01 to 10, e is 0.01 to 2, f is 0 to 10, and x is 24 to 48.
9 more elements
A method for manufacturing an ammoxidation catalyst for propylene comprising steps of:
- supporting molybdenum (Mo) oxide in a silica carrier to prepare a first catalyst;
- and
- supporting an oxide of heterogeneous metals in the first catalyst to obtain a catalyst in which metal oxide having a composition as a whole satisfying the following Chemical Formula 1 is supported in the silica carrier,
- wherein the metal oxide comprises a coating layer comprising molybdenum (Mo) oxide;
- and one or more coating layers comprising heterogeneous metals, positioned on the coating layer comprising molybdenum oxide:
- Mo12BiaFebAcBaCeDfOx [Chemical Formula 1]
- in the Chemical Formula 1,
- A is one or more elements of Ni, Mn, and Co,
- B is one or more elements of Zn, Mg, Ca, and Ba,
- C is one or more elements of Li, Na, K, Rb, and Cs,
- D is one or more elements of Cr, W, B, Al, Ca, and V,
- a to f, and x are respectively a fraction of atom and atomic group, a is 0.1 to 5, b is 0.1 to 5, c is 0.01 to 10, dis 0.01 to 10, e is 0.01 to 2, f is 0 to 10, and x is 24 to 48.
9 more elements
Dependencies are inferred from the claim text.