Mixed-metal oxide catalysts and processes for preparing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-253/00
B01J-023/00
출원번호
US-0636184
(2003-08-07)
발명자
/ 주소
Gaffney, Anne Mae
Song, Ruozhi
출원인 / 주소
Rohm and Haas Company
인용정보
피인용 횟수 :
6인용 특허 :
3
초록▼
An improved catalyst comprising a mixed metal oxide is prepared by the use of a sol-gel technique. The catalyst is useful for the conversion of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid by vapor phase oxidation, or to an unsaturated nitrile by vapor phase
An improved catalyst comprising a mixed metal oxide is prepared by the use of a sol-gel technique. The catalyst is useful for the conversion of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid by vapor phase oxidation, or to an unsaturated nitrile by vapor phase oxidation in the presence of ammonia.
대표청구항▼
1. A process for preparing an unsaturated carboxylic acid comprising subjecting an alkane, or a mixture of an alkane and an alkene, to vapor phase catalytic oxidation in the presence of a catalyst which comprises a mixed-metal oxide having the empirical formulaMoaVbEcXdOe wherein E is at least one e
1. A process for preparing an unsaturated carboxylic acid comprising subjecting an alkane, or a mixture of an alkane and an alkene, to vapor phase catalytic oxidation in the presence of a catalyst which comprises a mixed-metal oxide having the empirical formulaMoaVbEcXdOe wherein E is at least one element selected from the group consisting of Te and Sb, wherein X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Ag, B, In, Ce and W, and wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0 and e is dependent on the oxidation state of the other elements, and which is prepared by a process comprising: (a) admixing compounds of Mo, V, E and X and at least one solvent to form a gel; (b) aging said so-formed gel; and (c) calcining said gel. 2. A process for preparing an unsaturated nitrile comprising subjecting an alkane, or a mixture of an alkane and an alkene, to vapor phase catalytic oxidation in the presence of ammonia and a catalyst which comprises a mixed-metal oxide having the empirical formulaMoaVbEcXdOe wherein E is at least one element selected from the group consisting of Te and Sb, wherein X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Ag, B, In, Ce and W, and wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0 and e is dependent on the oxidation state of the other elements, and which is prepared by a process comprising: (a) admixing compounds of Mo, V, E and X and at least one solvent to form a gel; (b) aping said so-formed gel; and (c) calcining said gel.
Hazin,Paulette N.; Ellis, Jr.,Paul E., Catalyst composition for the selective conversion of alkanes to unsaturated carboxylic acids, method of making and method of using thereof.
Hazin,Paulette N.; Ellis, Jr.,Paul E., Catalyst composition for the selective conversion of alkanes to unsaturated carboxylic acids, method of making and method of using thereof.
Hazin,Paulette N.; Ellis, Jr.,Paul E., Catalyst composition for the selective conversion of alkanes to unsaturated carboxylic acids, method of making and method of using thereof.
Wang, Kun; Vartuli, James C.; Mortier, Wilfried J.; Dakka, Jihad M.; Lemon, Robert C., Mixed metal oxide catalysts and processes for their preparation and use.
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