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    PRODUCTION OF ACROLEIN OR ACRYLIC ACID FROM ALLYL ALCOHOL WITH HIGH YIELD AND LOW IMPURITY
    7.
    发明申请
    PRODUCTION OF ACROLEIN OR ACRYLIC ACID FROM ALLYL ALCOHOL WITH HIGH YIELD AND LOW IMPURITY 有权

    公开(公告)号：US20220274905A1

    公开(公告)日：2022-09-01

    申请号：US17632653

    申请日：2020-09-10

    申请人： Rohm and Haas Company

    发明人： Jinsuo Xu

    IPC分类号： C07C45/38 ,  C07C51/25

    摘要： Acrolein is produced by selectively oxidizing allyl alcohol over a first mixed metal oxide catalyst in the presence of oxygen in the vapor phase. The first mixed metal oxide catalyst comprises oxides of molybdenum and bismuth. Acrylic acid is produced by selectively oxidizing the acrolein over a second mixed metal oxide catalyst in the presence of oxygen in the vapor phase. The second mixed metal oxide catalyst has a different composition from the first mixed metal oxide catalyst.

    ALDEHYDE BYPRODUCT REDUCTION IN ACRYLIC ACID PRODUCTION USING HIGHLY ACTIVE AND ELECTIVE CATALYSTS
    8.
    发明申请
    ALDEHYDE BYPRODUCT REDUCTION IN ACRYLIC ACID PRODUCTION USING HIGHLY ACTIVE AND ELECTIVE CATALYSTS 有权

    公开(公告)号：US20220193640A1

    公开(公告)日：2022-06-23

    申请号：US17601751

    申请日：2020-04-20

    申请人： Dow Global Technologies LLC ,  Rohm and Haas Company

    发明人： Jinsuo Xu ,  Nelson I. Quiros ,  Daniel A. Bors ,  Joseph F. Dewilde

    IPC分类号： B01J23/652 ,  B01J23/00 ,  B01J23/28 ,  C07C51/16 ,  C07C45/28

    摘要： A catalyst composition comprises an acrolein-oxidizing catalyst comprising a mixed metal oxide catalyst of general formula (1): MoVaA1bA2cA3dOm  (I) in which A1 comprises at least one element selected from the group consisting of W and Cu; A2 comprises at least one element selected from the group consisting of Sb, Fe, and Nb; A3 comprises at least one element selected from the group consisting of Y, Ti, Zr, Hf, Ta, Cr, Mn, Re, Ru, Co, Rh, Ir, Ni, Pd, Pt, Ag, Au, Zn, B, Al, Ga, In, Ge, Sn, Si, Te, Pb, P, As, Bi, Se, rare earth elements, alkaline elements, and alkaline earth elements; a ranges from 0.01 to 1.0; b ranges from 0.01 to 1.5; c ranges from 0 to 1.5; d ranges from 0 to 1.0; and m is dependent on the oxidation state of the other elements. The catalyst composition further comprises a finishing catalyst comprising a mixed metal oxide catalyst of general formula (II): MoVwNbxX1yX2zOn  (II) in which X1 comprises at least one element selected from the group consisting of Te and Sb; X2 comprises at least one an element selected from the group consisting of Y, Ti, Zr, Hf, Nb, Ta, Cr, Mn, Re, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Ag, Au, Zn, B, Al, Ga, In, Ge, Sn, Pb, P, As, Bi, Se, rare earth elements and alkaline earth elements; w ranges from 0.01 to 1.0; x ranges from 0.01 to 1.0; y ranges from 0.01 to 1.0; z ranges from 0 to 1.0; and n is depended on the oxidation state of the other elements. The finishing catalyst does not contain W or Cu, and has an X-ray diffraction pattern showing an orthorhombic phase as the major crystal phase with main peaks with 2θ at 6.7°, 7.8°, 22.1°, and 27.2°. The acrolein-oxidizing catalyst has a different chemical composition than the finishing catalyst. A process for producing acrylic acid is also disclosed.

    Method for preparing acrylic acid
    9.
    发明授权
    Method for preparing acrylic acid 有权

    公开(公告)号：US11236034B2

    公开(公告)日：2022-02-01

    申请号：US16980936

    申请日：2019-02-21

    申请人： Rohm and Haas Company

    发明人： Donald A. Ebert ,  Timothy Allen Hale ,  Brian Robert Keyes ,  Justin Rose ,  Jinsuo Xu

    IPC分类号： C07C51/25 ,  C07C57/04

    摘要： Provided is a process for preparing acrylic acid comprising (1) preparing acrolein by catalytic gas phase oxidation comprising (a) providing a reaction gas comprising (i) 5 to 10 mol % propylene, (ii) 0.02 to 0.75 mol % propane, and (iii) 0.25 to 1.9 mol % of a fuel mixture comprising at least one of methane and ethane, wherein the molar ratio of the total amount of propane, methane, and ethane to the total amount of propylene is from 0.01:1 to 0.25:1, (b) contacting the reaction gas with a first mixed metal oxide catalyst to form a mixture comprising acrolein, wherein the first mixed metal oxide catalyst comprises one or more of molybdenum, bismuth, cobalt, and iron, and (2) contacting the acrolein mixture with a second mixed metal oxide catalyst to form a mixture comprising acrylic acid, wherein the second mixed metal oxide catalyst comprises one or more of molybdenum, vanadium, tungsten, copper, and antimony.