A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
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1. A process for producing an unsaturated carboxylic acid, which comprises subjecting an alkane or a mixture of an alkane and an alkene to a vapor phase catalytic oxidation reaction in the presence of a catalyst containing a mixed metal oxide having the empirical formula AaDbEcXdOe wherein A is at l
1. A process for producing an unsaturated carboxylic acid, which comprises subjecting an alkane or a mixture of an alkane and an alkene to a vapor phase catalytic oxidation reaction in the presence of a catalyst containing a mixed metal oxide having the empirical formula AaDbEcXdOe wherein A is at least one element selected from the group consisting of Mo and W, D is at least one element selected from the group consisting of V and Ce, E is at least one element selected from the group consisting of Te, Sb and Se, and X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt, Sb, Bi, B, In, As, Ge, Sn, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Ag, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; and 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 said other elements, said catalyst composition having been formed from calcining an admixture including catalyst precursors and a source of NOx for improving catalytic performance. 2. The process according to claim 1, wherein said source of NOx is selected from nitric acid, ammonium nitrate, ammonium nitrite, NO, NO2 or a mixture thereof.3. The process according to claim 1, wherein said source of NOx is nitric acid.4. A process for producing an unsaturated nitrile, which comprises subjecting an alkane, or a mixture of an alkane and an alkene, and ammonia to a vapor phase catalytic oxidation reaction in the presence of a catalyst containing a mixed metal oxide having the empirical formula AaDbEcXdOe; wherein A is at least one element selected from the group consisting of Mo and W, D is at least one element selected from the group consisting of V and Ce, E is at least one element selected from the group consisting of Te, Sb and Se, and X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt, Sb, Bi, B, In, As, Ge, Sn, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Ag, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; and 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 said other elements, said catalyst composition having been formed from calcining an admixture including catalyst precursors and a source of NOx for improving catalytic performance. 5. The process according to claim 4, wherein said source of NOx is selected from nitric acid, ammonium nitrate, ammonium nitrite, NO, NO2 or a mixture thereof.6. The process according to claim 4, wherein said source of NOx is nitric acid.
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이 특허에 인용된 특허 (5)
Ushikubo Takashi (Yokohama JPX) Oshima Kazunori (Machida JPX) Kayo Atsushi (Kurashiki JPX) Umezawa Tiaki (Yokkaichi JPX) Kiyono Ken-ichi (Machida JPX) Sawaki Itaru (Yokohama JPX) Nakamura Hiroya (Yok, Catalyst for the production of nitriles.
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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.
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