Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process

Peng, Xiang-Dong; Parris, Gene E; Toseland, Bernard A; Battavio, Paula J

Title: Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process

Abstract

The present invention pertains to a process for the coproduction of methanol and dimethyl ether (DME) directly from a synthesis gas in a single step (hereafter, the "single step DME process"). In this process, the synthesis gas comprising hydrogen and carbon oxides is contacted with a dual catalyst system comprising a physical mixture of a methanol synthesis catalyst and a methanol dehydration catalyst. The present invention is an improvement to this process for providing an active and stable catalyst system. The improvement comprises the use of an aluminum phosphate based catalyst as the methanol dehydration catalyst. Due to its moderate acidity, such a catalyst avoids the coke formation and catalyst interaction problems associated with the conventional dual catalyst systems taught for the single step DME process.

Inventors:

Peng, Xiang-Dong ^[1]; Parris, Gene E ^[2]; Toseland, Bernard A ^[1]; Battavio, Paula J ^[1]

Allentown, PA
Coopersburg, PA

Issue Date:: 1998-01-01

Research Org.:: Air Products and Chemicals, Inc. (Allentown, PA)

OSTI Identifier:: 871560

Patent Number(s):: 5753716

Assignee:: Air Products and Chemicals, Inc. (Allentown, PA)

Patent Classifications (CPCs):: C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS

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C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C29/153 - characterised by the catalyst used
C07C29/154 - containing copper, silver, gold, or compounds thereof
C07C41/01 - Preparation of ethers
C07C31/04 - Methanol
C07C43/043 - {Dimethyl ether}
C07C29/156 - containing iron group metals, platinum group metals or compounds thereof

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DOE Contract Number:: FC22-95PC93052

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: aluminum; phosphate; dehydration; catalyst; single; step; dimethyl; process; pertains; coproduction; methanol; dme; directly; synthesis; gas; hereafter; comprising; hydrogen; carbon; oxides; contacted; dual; physical; mixture; improvement; providing; active; stable; comprises; based; due; moderate; acidity; avoids; coke; formation; interaction; associated; conventional; systems; taught; stable catalyst; dual catalyst; physical mixture; single step; synthesis gas; improvement comprises; gas comprising; methanol synthesis; comprising hydrogen; coke formation; synthesis catalyst; aluminum phosphate; based catalyst; /518/502/

Citation Formats


                    Peng, Xiang-Dong, Parris, Gene E, Toseland, Bernard A, and Battavio, Paula J. Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process.  United States: N. p., 1998. 
        Web.

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                    Peng, Xiang-Dong, Parris, Gene E, Toseland, Bernard A, & Battavio, Paula J. Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process.  United States.

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                    Peng, Xiang-Dong, Parris, Gene E, Toseland, Bernard A, and Battavio, Paula J. Thu .  
        "Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process".  United States.  https://www.osti.gov/servlets/purl/871560.

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@article{osti_871560,

  title        = {Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process},

  author       = {Peng, Xiang-Dong and Parris, Gene E and Toseland, Bernard A and Battavio, Paula J},

  abstractNote = {The present invention pertains to a process for the coproduction of methanol and dimethyl ether (DME) directly from a synthesis gas in a single step (hereafter, the "single step DME process"). In this process, the synthesis gas comprising hydrogen and carbon oxides is contacted with a dual catalyst system comprising a physical mixture of a methanol synthesis catalyst and a methanol dehydration catalyst. The present invention is an improvement to this process for providing an active and stable catalyst system. The improvement comprises the use of an aluminum phosphate based catalyst as the methanol dehydration catalyst. Due to its moderate acidity, such a catalyst avoids the coke formation and catalyst interaction problems associated with the conventional dual catalyst systems taught for the single step DME process.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {1}

}

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Works referenced in this record:

Light alkenes from syngas via dimethyl ether
journal, April 1995

Cai, Guangyu; Liu, Zhongmin; Shi, Renmin
Applied Catalysis A: General, Vol. 125, Issue 1
https://doi.org/10.1016/0926-860X(94)00291-6

Influence of the starting aluminum salt on the surface and acid properties of AlPO4 catalysts precipitated with ammonium hydroxide
journal, May 1988

Campelo, J.
Journal of Catalysis, Vol. 111, Issue 1
https://doi.org/10.1016/0021-9517(88)90070-X

Conversion of Alcohols (α-Methylated Series) on ALPO4 Catalysts
journal, February 1995

Campelo, J. M.; Garcia, A.; Herencia, J. F.
Journal of Catalysis, Vol. 151, Issue 2
https://doi.org/10.1006/jcat.1995.1032

Effect of phosphate ions on the surface chemistry and microstructure of amorphous alumina
journal, January 1990

Abbattista, Fedele; Delmastro, Alessandro; Gozzelino, Giuseppe
Journal of the Chemical Society, Faraday Transactions, Vol. 86, Issue 21
https://doi.org/10.1039/ft9908603653

Conversion of synthesis gas to dimethyl ether over bifunctional catalytic systems
journal, November 1991

Sofianos, Alkeos C.; Scurrell, Mike S.
Industrial & Engineering Chemistry Research, Vol. 30, Issue 11
https://doi.org/10.1021/ie00059a002

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Similar Records

Title: Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process

Abstract

Citation Formats

Light alkenes from syngas via dimethyl ether journal, April 1995

Influence of the starting aluminum salt on the surface and acid properties of AlPO4 catalysts precipitated with ammonium hydroxide journal, May 1988

Conversion of Alcohols (α-Methylated Series) on ALPO4 Catalysts journal, February 1995

Effect of phosphate ions on the surface chemistry and microstructure of amorphous alumina journal, January 1990

Conversion of synthesis gas to dimethyl ether over bifunctional catalytic systems journal, November 1991

Light alkenes from syngas via dimethyl ether
journal, April 1995

Influence of the starting aluminum salt on the surface and acid properties of AlPO4 catalysts precipitated with ammonium hydroxide
journal, May 1988

Conversion of Alcohols (α-Methylated Series) on ALPO4 Catalysts
journal, February 1995

Effect of phosphate ions on the surface chemistry and microstructure of amorphous alumina
journal, January 1990

Conversion of synthesis gas to dimethyl ether over bifunctional catalytic systems
journal, November 1991