[특허]Use of a supplemental promoter in conjunction with a carbon-supported, noble-metal-containing catalyst in liquid phase oxidation reactions

[미국특허] Use of a supplemental promoter in conjunction with a carbon-supported, noble-metal-containing catalyst in liquid phase oxidation reactions 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07F-009/28 C07F-009/00
출원번호	US-0621885 (2007-01-10)
등록번호	US-7291751 (2007-11-06)
발명자 / 주소	Leiber,Mark A. Wan,Kam To
출원인 / 주소	Monsanto Technology LLC
대리인 / 주소	Senniger Powers
인용정보	피인용 횟수 : 7 인용 특허 : 42

초록 ▼

This invention relates to the use of a supplemental promoter in conjunction with a noble-metal-containing catalyst comprising a carbon support in catalyzing liquid phase oxidation reactions, a process for making of an improved catalyst comprising such a supplemental promoter, and an improved catalyst comprising such a supplemental promoter. In a particularly preferred embodiment, a supplemental promoter (most preferably bismuth or tellurium) is used in conjunction with a noble-metal-containing catalyst comprising a carbon support in a liquid phase oxidation process wherein N-(phosphonomethyl)iminodiacetic acid (i.e., "PMIDA") or a salt thereof is oxidized to form N-(phosphonomethyl)glycine (i.e., "glyphosate") or a salt thereof. The benefits of such a process include increased oxidation of the formaldehyde and formic acid by-products, and, consequently, decreased final concentrations of those by-products as well as other undesirable by-products, most notably N-methyl-N-(phosphonomethyl)glycine (i.e., "NMG").

대표청구항 ▼

What is claimed is: 1. A process for oxidizing a substrate selected from the group consisting of N-(phosphonomethyl)iminodiacetic acid or a salt thereof, formaldehyde, and formic acid, the process comprising contacting the substrate with an oxidation catalyst in the presence of oxygen, wherein the catalyst comprises a carbon support having a noble metal, iron and cobalt at a surface of the carbon support, the noble metal being selected from the group consisting of platinum, palladium, ruthenium, rhodium, iridium, silver, osmium, gold and combinations thereof. 2. A process as set forth in claim 1 wherein the catalyst comprises metal particles comprising said noble metal at a surface of the carbon support. 3. A process as set forth in claim 1 wherein the noble metal constitutes from about 2.5 to about 10% by weight of the catalyst. 4. A process as set forth in claim 1 wherein the noble metal constitutes from about 3 to about 7.5% by weight of the catalyst. 5. A process as set forth in claim 1 wherein the noble metal is platinum. 6. A process as set forth in claim 1 wherein the carbon support is activated carbon. 7. A process as set forth in claim 1 wherein the contacting is conducted in a continuous reactor system. 8. A process as set forth in claim 1 wherein the contacting is carried out at a pressure of from about 30 to about 130 psig. 9. A process as set forth in claim 1 wherein the contacting is carried out at a temperature of from about 80 to about 110째 C. 10. A process as set forth in claim 1 wherein the contacting is carried out in a solution or slurry having a pH of less than 7. 11. A process as set forth in claim 1 wherein the contacting is carried out in a solution or slurry having a pH of less than 3. 12. A process as set forth in claim 1 wherein the contacting is carried out in a solution or slurry having a pH of from about 1 to about 2. 13. A process as set forth in claim 1 wherein the substrate comprises N-(phosphonomethyl)iminodiacetic acid or a salt thereof.

이 특허에 인용된 특허 (42) 인용/피인용 타임라인 분석

Chou Shine K. (Chesterfield MO), Amine oxidation using carbon catalyst having oxides removed from surface.
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McCandlish Larry E. (Highland Park NJ) Wright Franklin J. (Watchung NJ) Kugler Edwin L. (Summit NJ), CO Hydrogenation process using steam and molybdenum oxycarbonitride catalyst.
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Stern Michael K. ; Johnson Todd J. ; Jorgenson Amy L. ; Rogers Michael D. ; Franczyk ; II Thaddeus S., Continuous process for the preparation of N-(phosphonomethyl)iminodiacetic acid.
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Jerry R. Ebner ; Mark A. Leiber ; Kam-To Wan ; Peter E. Rogers ; Jingyue Liu ; Anthony Woods GB, Deeply reduced oxidation catalyst and its use for catalyzing liquid phase oxidation reactions.
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Smith Lowell R. (St. Louis MO), Formic acid and formaldehyde destruction in waste streams.
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Hodgkinson Ian (1 Bankfield Drive Holmbridge ; Huddersfield ; Yorkshire HD7 1PH GBX), Manufacture of N-phosphonomethylglycine and its salts.
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Zhang, Ruth Yu-Ai; Amlani, Islamshah; Baker, Jeffrey H., Method for chemical vapor deposition of single walled carbon nanotubes.
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Witherspoon Romeo R. (Shelby Township ; Macomb County MI), Method of preparing metal-heterocarbon-nitrogen catalyst for electrochemical cells.
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Lefebvre, Mark C., Methods of producing oxygen reduction catalyst.
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McCandlish Larry E. (Highland Park NJ) Turaew Larissa W. (Fairlawn NJ), Molybdenum oxycarbonitride compositions and process for preparing the same.
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Triplett Kelly B. (Stamford CT) Burk Johst H. (Mohegan Lake NY) Sherif Fawzy G. (Stony Point NY) Vreugdenhil Willem (Katonah NY), Non-oxide metal ceramic catalysts comprising metal oxide support and intermediate ceramic passivating layer.
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Hershman Arnold (Frontenac MO) Gross David E. (Kirkwood MO) Friedman Robert M. (Creve Coeur MO), Oxidation with coated catalyst.
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Felthouse Timothy R. (St. Louis MO), Oxidation with encapsulated co-catalyst.
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Phillips Jonathan, Plasma generation of supported metal catalysts.
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Ito Takashi (Ichikawa JPX) Matsuzawa Shigemitsu (Edogawa JPX) Kato Katsuaki (Ichikawa JPX), Platinum alloy electrocatalyst and acid-electrolyte fuel cell electrode using the same.
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Freund Andreas,DEX ; Lehmann Thomas,DEX ; Starz Karl-Anton,DEX ; Heinz Gerhard,DEX ; Schwarz Robert,DEX, Platinum-aluminum alloy catalyst for fuel cells and method of its production and use.
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Martin Ramon Juan L. (Madrid ESX) Munoz Madronero Julio (Cerceda ESX), Preparation of N-phosphonomethylglycine by oxidation of N-phosphonomethyliminodiacetic acid.
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David A. Morgenstern ; Juan P. Arhancet ; Howard C. Berk ; William L. Moench, Jr. ; James C. Peterson, Process and catalyst for dehydrogenating primary alcohols to make carboxylic acid salts.
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Morgenstern David A. ; Fobian Yvette M., Process for making glyphosate by oxidizing N-substituted glyphosates.
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Gentilcore Michael J. (St. Louis MO), Process for preparing N,N-diacetic acid aminomethylenephosphonic acid.
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Slaugh Lynn H. (Houston TX) Hoxmeier Ronald J. (Houston TX), Process for preparing a supported molybdenum carbide composition.
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Slaugh Lynn H. (Houston TX) Hoxmeier Ronald J. (Houston TX), Process for preparing a supported molybdenum carbide composition.
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Slaugh Lynn H. (Houston TX) Hoxmeier Ronald J. (Houston TX), Process for preparing a supported tungsten carbide composition.
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Ebner Jerry R. (St. Peters MO) Franczyk Thaddeus S. (Maryland Heights MO), Process for preparing carboxylic acid salts and methods for making such catalysts and catalysts useful in such process.
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Franz John E. (Crestwood MO), Process for producing N-phosphonomethyl glycine.
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Hershman Arnold (Creve Coeur MO), Process for producing N-phosphonomethyl glycine.
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Riley Dennis P. (Chesterfield MO) Rivers ; Jr. Willie J. (University City MO), Process for producing N-phosphonomethylglycine.
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Chou Shine K. (Chesterfield MO), Process for removing surface oxides from activated carbon catalyst.
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Falke Holger (Hemmingen DEX) Strauss Guenther (Hanover DEX), Supported catalyst for oxidizing carbon monoxide.
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연합인증

[미국특허] Use of a supplemental promoter in conjunction with a carbon-supported, noble-metal-containing catalyst in liquid phase oxidation reactions 원문보기

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[미국특허] Use of a supplemental promoter in conjunction with a carbon-supported, noble-metal-containing catalyst in liquid phase oxidation reactions 원문보기

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