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公开(公告)号：US20240010592A1
公开(公告)日：2024-01-11
申请号：US18254529
申请日：2021-11-17
Applicant: Rohm and Haas Company
Inventor： Joseph F. Dewilde , Kirk W. Limbach , Reetam Chakrabarti
CPC classification number: C07C45/50 , B01J21/066 , B01J23/08 , B01J35/1057 , B01J29/7015 , B01J29/035
Abstract: A process for preparing aldehydes from synthesis gas includes introducing a first feed stream comprising hydrogen gas and a carbon-containing gas comprising carbon monoxide into a reaction zone of a first reactor, converting the first feed stream into a first product stream comprising C2 to C4 hydrocarbons in the reaction zone in the presence of a first catalyst, wherein the first product stream further comprises carbon dioxide, removing water and C4 and higher hydrocarbons from the first product stream to form a second feed stream, and converting the second feed stream into a second product stream comprising propionaldehyde in the presence of a second catalyst in a second reactor. The propionaldehyde can further be converted to methyl methacrylate via oxidative esterification.
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2.发明申请公开(公告)号：US20220193640A1
公开(公告)日：2022-06-23
申请号：US17601751
申请日：2020-04-20
Applicant: Dow Global Technologies LLC , Rohm and Haas Company
Inventor： Jinsuo Xu , Nelson I. Quiros , Daniel A. Bors , Joseph F. Dewilde
IPC: B01J23/652 , B01J23/00 , B01J23/28 , C07C51/16 , C07C45/28
Abstract: 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.
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公开(公告)号：US20240010596A1
公开(公告)日：2024-01-11
申请号：US18253605
申请日：2021-11-17
Applicant: Rohm and Haas Company
Inventor： Joseph F. Dewilde , Kirk W. Limbach , Reetam Chakrabarti
IPC: C07C51/225 , C07C51/64
CPC classification number: C07C51/225 , C07C51/64 , C07C2521/06 , C07C2523/08 , C07C2529/85
Abstract: A process for preparing C2 to C4 carboxylic acids from synthesis gas includes introducing a feed stream comprising hydrogen gas and a carbon-containing gas comprising carbon monoxide into a reaction zone of a first reactor, converting the feed stream into an intermediate stream comprising C2 to C4 hydrocarbons in the reaction zone in the presence of a first catalyst, wherein the intermediate stream further comprises carbon dioxide and wherein the first catalyst is a composite catalyst comprising a metal oxide catalyst component and a microporous catalyst component, and converting the intermediate stream into a product stream comprising C2 to C4 carboxylic acids in the presence of a second catalyst in a second reactor. The second reactor can be configured for olefin oxidation or paraffin oxidation.
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公开(公告)号：US20240010591A1
公开(公告)日：2024-01-11
申请号：US18251627
申请日：2021-11-17
Applicant: Rohm and Haas Company
Inventor： Joseph F. Dewilde , Kirk W. Limbach , Reetam Chakrabarti
Abstract: A process for preparing aldehydes from methanol includes introducing a feed stream comprising methanol and hydrogen gas into a reaction zone of a first reactor, converting the feed stream into an intermediate stream comprising C2 to C4 olefins in the reaction zone in the presence of a first catalyst, wherein the first catalyst is a microporous catalyst component, removing water and species C4 and heavier from the intermediate stream to form a lights stream, and converting the lights stream into a product stream comprising propionaldehyde in the presence of a second catalyst and carbon monoxide in a second reactor. The propionaldehyde can further be converted to methyl methacrylate via oxidative esterification.
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