Catalyst for selective oxidation and amoxidation of alkanes and/or alkenes, particularly in processes for obtaining acrylic acid, acrylonitrile and the derivatives thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-255/08
C07C-255/00
C07C-051/16
출원번호
US-0759384
(2004-01-16)
등록번호
US-7355062
(2008-04-08)
우선권정보
ES-200101756(2001-07-17)
발명자
/ 주소
L��pez Nieto,Jose Manuel
Botella Asunci��n,Pablo
Solsona Espriu,Benjam��n
출원인 / 주소
Consejo Superior de Investigaciones Cientificas
Universidad Politecnica de Valencia
대리인 / 주소
Klauber & Jackson L.L.C.
인용정보
피인용 횟수 :
1인용 특허 :
3
초록▼
A catalyst for the selective oxidation and amoxidation of alkanes and/or alkenes, particularly in processes for obtaining acrylic acid, acrylonitrile and derivatives of these, including a least one oxide of Mo, Te, V, Cu and at least another A component selected from among Nb, Ta, Sn, Se, W, Ti, Fe,
A catalyst for the selective oxidation and amoxidation of alkanes and/or alkenes, particularly in processes for obtaining acrylic acid, acrylonitrile and derivatives of these, including a least one oxide of Mo, Te, V, Cu and at least another A component selected from among Nb, Ta, Sn, Se, W, Ti, Fe, Co, Ni, Cr, Ga, Sb, Bi, a rare, alkaline or alkali-earth earth, in such a way that the catalyst presents, in a calcined form, an X-ray diffractogram with five intensive diffraction lines, typically the most intense corresponding to diffraction angles of 2θ at 22.1��0.4, 27.1��0.4; 28.1��0.4, 36.0��0.4 and 45.1��0.4. In the preferred embodiment, the catalyst has the following empiric formula: description="In-line Formulae" end="lead"MoTehViCujAkOx description="In-line Formulae" end="tail" in which h, i, j, k are values comprised between 0.001 and 4.0 and x depends on the oxidation status or valency of the Mo, Te, V, Cu and A elements.
대표청구항▼
The invention claimed is: 1. A catalyst for an oxidation reaction of a hydrocarbon selected from the group consisting of alkanes, alkenes and mixtures thereof, said catalyst comprising Mo, Te, V and at least another A component selected from the group consisting of Nb, Ta, Sn, Se, W, Ti, Fe, Co, Ni
The invention claimed is: 1. A catalyst for an oxidation reaction of a hydrocarbon selected from the group consisting of alkanes, alkenes and mixtures thereof, said catalyst comprising Mo, Te, V and at least another A component selected from the group consisting of Nb, Ta, Sn, Se, W, Ti, Fe, Co, Ni, Cr and a rare earth, also comprising Cu, and having the empiric formula MoTehViCujAkOx, in such a way that at least Mo, Te, V and Cu are present in the form of at least one oxide and which, in the calcined form, shows an X-ray diffractogram with five intense diffraction lines corresponding to diffraction angles of 2θ at 22.1+-0.4, 27.1+-0.4; 28.1+-0.4, 36.0+-0.4 and 45.1+-0.4, wherein h, i, i, k are between 0.001 and 4.0 and x depends on the oxidation status or valency of the Mo, Te, V, Cu and A elements. 2. A catalyst according to claim 1, wherein h and i are comprised between 0.01 and 3, the i/h ratio is comprised between 0.3 and 1, and j and k are comprised between 0.001 and 2. 3. A catalyst according to claim 1, wherein A is Nb or Ta, and h and i are comprised between 0.02 and 2, the i/h ratio is comprised between 0.3 and 1, and j is comprised between 0.001 and 0.5 and k is comprised between 0.001 and 2. 4. A catalyst according to claim 1, wherein said catalyst shows an X-ray diffractogram corresponding to 2θ angle of diffraction Average spacing Relative (��0.4) (A) intensity 22.1 4.02 100 27.1 3.29 20-120 28.1 3.17 20-120 36.0 2.49 10-50 45.1 2.01 10-60. 5. A catalyst according claim 1, wherein said catalyst is a mixed calcined oxide. 6. A catalyst according to claim 1, wherein said catalyst is a mixed oxide supported on a solid. 7. A catalyst according to claim 6, wherein the solid is selected from silica, aluminium oxide, titanium oxide and mixtures of these. 8. A catalyst according to claim 6, wherein the solid is silica contained in a ratio of 20 to 70% of the total weight of the catalyst. 9. A catalyst according to claim 1, wherein said catalyst is a mixed oxide supported on silicon carbide.
Dieterle, Martin; Hibst, Hartmut; Popel, Wolfgang Juergen; Petzoldt, Jochen; Mueller-Engel, Klaus Joachim, Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.