Process for converting alkanes to unsaturated carboxylic acids
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-027/10
C07C-051/21
C07C-045/27
출원번호
UP-0077383
(2008-03-19)
등록번호
US-7820854
(2010-11-15)
발명자
/ 주소
Lemonds, Andrew Michael
Lundquist, Eric Gustave
Zolotorofe, Donald Lee
출원인 / 주소
Rohm and Haas Company
대리인 / 주소
Cottingham, Tifani M.
인용정보
피인용 횟수 :
0인용 특허 :
3
초록
The present invention relates to an improved process for the conversion of alkanes to unsaturated carboxylic acids.
대표청구항▼
What is claimed is: 1. A method for producing an unsaturated carboxylic acid product by the selective partial oxidation of an alkane comprising: i. reacting an alkane with oxygen or an oxygen-containing gas, in the presence of a catalyst to yield a product comprising at least one unsaturated carbox
What is claimed is: 1. A method for producing an unsaturated carboxylic acid product by the selective partial oxidation of an alkane comprising: i. reacting an alkane with oxygen or an oxygen-containing gas, in the presence of a catalyst to yield a product comprising at least one unsaturated carboxylic acid and a concentration of saturated carboxylic acid; and, ii. lowering the concentration of the saturated carboxylic acid by lowering the partial oxidation reaction selectivity to the saturated carboxylic acid, destroying, converting, or separating at least a portion of the saturated carboxylic acid; wherein the catalyst comprises: (a) a mixed metal oxide comprising the empirical formula AaMbNcXdZeOf wherein A is at least one element selected from the group consisting of Mo and W; M is at least one element selected from the group consisting of V and Ce; N is at least one element selected from the group consisting of Te, Sb and Se; 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, Ra, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; and Z is at least one element selected from the group consisting of Zn, Ga, Ir, Sm, Pd, Au, Ag, Cu, Sc, Y, Pr, Nd and Tb; and wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0 to 0.1, and f is dependent on the oxidation state of the other elements; and, (b) an oxidative dehydrogenation catalyst. 2. The method of claim 1 wherein i. the alkane comprises propane; and ii. the unsaturated carboxylic acid comprises acrylic acid. 3. The method of claim 1 wherein the lowering of the saturated carboxylic acid concentration comprises adding a catalyst wherein the catalyst is at least one oxide of a metal selected from the group comprising Mo, P, Fe, and V or combinations thereof. 4. A method for producing an unsaturated carboxylic acid product by the selective partial oxidation of an alkane comprising: i. reacting an alkane with oxygen or an oxygen-containing gas, in the presence of a catalyst to yield a product comprising at least one unsaturated carboxylic acid and a concentration of saturated carboxylic acid; and, ii. lowering the saturated carboxylic acid concentration by operating an aldol condensation of the saturated carboxylic acid wherein the saturated carboxylic acid is reacted with an aldehyde; wherein the catalyst comprises: a mixed metal oxide comprising the empirical formula AaMbNcXdZeOf wherein A is at least one element selected from the group consisting of Mo and W; M is at least one element selected from the group consisting of V and Ce; N is at least one element selected from the group consisting of Te, Sb and Se; 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, Ra, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; and Z is at least one element selected from the group consisting of Zn, Ga, Ir, Sm, Pd, Au, Ag, Cu, Sc, Y, Pr, Nd and Tb; and wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0 to 0.1, and f is dependent on the oxidation state of the other elements. 5. A method for producing an unsaturated carboxylic acid product by the selective partial oxidation of an alkane comprising: i. reacting an alkane with oxygen or an oxygen-containing gas, in the presence of a catalyst to yield a product comprising at least one unsaturated carboxylic acid and a concentration of saturated carboxylic acid; and, ii. lowering the saturated carboxylic acid concentration by operating an adsorptive distillation or an extractive distillation process; wherein the catalyst comprises: a mixed metal oxide comprising the empirical formula AaMbNcXdZeOf wherein A is at least one element selected from the group consisting of Mo and W; M is at least one element selected from the group consisting of V and Ce; N is at least one element selected from the group consisting of Te, Sb and Se; 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, Ra, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; and Z is at least one element selected from the group consisting of Zn, Ga, Ir, Sm, Pd, Au, Ag, Cu, Sc, Y, Pr, Nd and Tb; and wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0 to 0.1, and f is dependent on the oxidation state of the other elements. 6. The method of claim 5 wherein the operating an extractive distillation process comprises; i. a lewis base is complexed with acrylic acid; and, ii. the acrylic complexed with the lewis based is separated from propionic acid.
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이 특허에 인용된 특허 (3)
Karim, Khalid; Bhat, Yajnavalkya Subrai; Zaheer, Syed Irshad; Nafisah, Abdullah Bin; Khan, Asad Ahmed, Catalytic oxidation of alkanes to corresponding acids.
Cavaterra Enrico (Saronno (Varese) IT) Petrini Guido (Milan IT) Covini Romano (Milan IT) Moreschini Luciano (Milan IT), Process for preparing alpha, beta unsaturated acids by catalytic oxidation of corresponding saturated acids in the gas p.
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