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WO2008151614A2 - Procédé de production d'une microstructure métallique pour un microréacteur - Google Patents

Procédé de production d'une microstructure métallique pour un microréacteur Download PDF

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Publication number
WO2008151614A2
WO2008151614A2 PCT/DE2008/000951 DE2008000951W WO2008151614A2 WO 2008151614 A2 WO2008151614 A2 WO 2008151614A2 DE 2008000951 W DE2008000951 W DE 2008000951W WO 2008151614 A2 WO2008151614 A2 WO 2008151614A2
Authority
WO
WIPO (PCT)
Prior art keywords
microstructure
microreactor
produced
metal
catalyst
Prior art date
Application number
PCT/DE2008/000951
Other languages
German (de)
English (en)
Other versions
WO2008151614A3 (fr
Inventor
Michael Böttiger
Walter Jehle
Original Assignee
Eads Deutschland Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eads Deutschland Gmbh filed Critical Eads Deutschland Gmbh
Publication of WO2008151614A2 publication Critical patent/WO2008151614A2/fr
Publication of WO2008151614A3 publication Critical patent/WO2008151614A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1146—After-treatment maintaining the porosity
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/08—Alloys with open or closed pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00781—Aspects relating to microreactors
    • B01J2219/00819—Materials of construction
    • B01J2219/00822—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00781—Aspects relating to microreactors
    • B01J2219/00819—Materials of construction
    • B01J2219/00835—Comprising catalytically active material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00781—Aspects relating to microreactors
    • B01J2219/00819—Materials of construction
    • B01J2219/00844—Comprising porous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00781—Aspects relating to microreactors
    • B01J2219/00905—Separation
    • B01J2219/00907—Separation using membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a method for producing a metallic microstructure for a microreactor according to claim 1.
  • Microstructures are used, for example, for microreactors.
  • a microreactor is a miniaturized reactor for chemical, pharmaceutical or biotechnological applications. As a rule, it is only a few millimeters in size and can be used, for example, as a chemical reactor for liquids or gases which are to react with one another. For this purpose, the liquids or gases in small channels - microchannels - the microstructure are brought into contact with each other.
  • Such reactors require less resources compared to conventional process technology. In part, they also allow the testing of process conditions, which is not possible in the macroscopic reactors.
  • a microreactor can be used, for example, as a heterogeneous catalyst.
  • the solid form is most often used.
  • Such solid catalysts are either made entirely from an active component or the active component is applied to a substrate.
  • the substrate consists of ceramic particles in the shaped body catalyst, a basic body of mineral ceramic in the monolith catalyst or a ceramic powder carrier in the powder catalyst.
  • An object of the present invention is now to propose a method for producing a metallic microstructure for a microreactor.
  • the microstructure produced should be suitable in particular for any type of heterogeneous catalysis and electrochemistry and enable cost-effective production.
  • This object is achieved by a method for producing a metallic microstructure for a microreactor with the features of claim 1. Further embodiments of the invention will become apparent from the dependent claims.
  • An essential idea of the invention is to use a metallic (micro) porous structure with a possible subsequent catalytic coating for heterogeneous catalysis or as an electrode for electrochemistry instead of a basic ceramic structure for a microreactor.
  • a metallic microstructure having an open-pored structure produced according to the invention has favorable properties for a microreactor or for use as a microreactor.
  • a method comprising the following steps is now provided for producing such a metallic microstructure for a microreactor:
  • a metallic microstructure produced in this way has the above-mentioned advantages and, because of its properties, for example because of its porous three-dimensional structure, is suitable for use with the
  • the microstructure according to the invention usually only a small occurs Pressure loss due to the open-pore structure, whereby it can be used well for gas purification, eg for the recombination of hydrogen and oxygen.
  • the microstructure thus produced is also suitable for use as a filter or as a carrier material / support layer. It should be noted that properties such as a high bubble point or high capillary forces can be specifically adjusted by the type of pore distribution and the size of the pores in the microstructure.
  • the final shape of the metallic microstructure to be produced can be further coated with a catalyst, whereby a microreactor suitable for homogeneous and heterogeneous catalysis (gas / gas, gas / liquid, liquid / liquid) can be created.
  • the coating with a catalyst can be carried out, for example, by dipping, spraying or electrochemical deposition.
  • the catalyst coated microstructure may be further subjected to a post-treatment, in particular a temperature treatment.
  • Other possible application methods are melting and vapor deposition (PVD).
  • PVD melting and vapor deposition
  • the surface tension can be adjusted from hydrophilic to hydrophobic.
  • the metal paste used for infiltration may, according to one embodiment of the invention, comprise a metal powder and a binder for the metal powder.
  • the viscosity of the metal paste and / or the grain size of the metal powder can be selected according to one or more desired target properties of the metallic microstructure to be produced.
  • the sintering can be carried out under a reducing atmosphere, in particular to prevent oxidation of the metal foam and the metal paste.
  • the invention relates in a further embodiment to a microstructure for a microreactor made by a method according to one of the above-described embodiments of the invention. Furthermore, according to a further embodiment, the invention relates to the use of such a microstructure as a microreactor for homogeneous and heterogeneous catalysis, as an electrode, as a filter or as a carrier material. According to a further embodiment of the invention, in use, a membrane can be applied, for example instead of a catalyst or additional to a catalyst, for example to provide a membrane reactor with filtering action. Finally, an embodiment of the invention relates to the use of the microstructure according to the invention for gas purification.
  • the drawing shows in the only Fig. A flow chart of an embodiment of the manufacturing process according to the invention.
  • the desired size, structure and distribution of pores in the metallic microstructure to be produced are first determined and, accordingly, a corresponding metal foam is selected as the starting material.
  • a commercial metal foam can be used as the system carrier, which has the desired properties.
  • the metal foam used can have an extremely open-pore structure.
  • the metal foam having an open-pore structure selected in step S10 is assembled.
  • a metal paste metal powder and binder
  • the target properties can be adjusted via the viscosity of the paste and the grain size of the metal powder in the previous step S14.
  • This body is sintered under suitable conditions under reducing atmosphere (step S18) and debind.
  • step S20 the final geometry of the metallic microstructure to be produced is manufactured to measure by cutting from the blank.
  • the catalyst is applied in step S22. This can be z. B. by immersion, spraying or electrochemical deposition.
  • a special post-treatment can take place, for. B. a temperature treatment.
  • microstructure produced according to the invention can be characterized by the following properties (some of the properties depend on various factors such as the property of the metal foam used as starting material): porous structure
  • the microstructure produced according to the invention may, for.
  • a microreactor for homogeneous and heterogeneous catalysis gas / gas, gas / liquid, liquid / liquid
  • electrode eg., Fuel cell, electrolysis
  • filters support material / support layer
  • a catalyst is optionally possible.
  • a membrane can also be applied. Due to the low pressure loss, the microstructure can be used for gas purification, z. As for the recombination of hydrogen and oxygen.
  • a microstructure produced according to the invention may have the following advantages, which result in particular from the mechanical structure of the structure: porous three-dimensional structure (good for electrodes and catalysts) - uniform pore distribution
  • Nickel foam Commercially available open-pore Ni foam with a pore size of approx. 0.5 mm
  • Nickel powder particle size 2-10 micron
  • Nickel foam Commercially available open-pore Ni foam with a pore size of approx. 0.5 mm
  • Nickel powder particle size 5 micron
  • the paste is mixed with the powder in a ratio of 2/3 of anpastant to metal powder until a homogeneous paste is formed.
  • the viscosity which is set here in the range of 103-105 mPas.
  • the paste is then placed on the foam with a spatula. Subsequently, the piece of foam with the paste is placed in a vacuum chamber and a vacuum of 20 mbar applied for a few minutes. As a result, especially the remaining air in the foam is removed and thus achieved a homogeneous structure.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Powder Metallurgy (AREA)
  • Catalysts (AREA)

Abstract

L'invention concerne un procédé de production d'une microstructure métallique pour un microréacteur, ce procédé comprenant les étapes suivantes : confection d'une mousse de métal présentant une structure à pores ouverts (S12), infiltration sous vide d'une pâte de métal dans la mousse de métal (S16), frittage du corps de base ainsi obtenu (S18) et découpage du corps de base fritté pour obtenir la forme finale de la microstructure métallique à produire (S20).
PCT/DE2008/000951 2007-06-13 2008-06-11 Procédé de production d'une microstructure métallique pour un microréacteur WO2008151614A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027837A DE102007027837A1 (de) 2007-06-13 2007-06-13 Verfahren zur Herstellung einer metallischen Mikrostruktur für einen Mikroreaktor
DE102007027837.5 2007-06-13

Publications (2)

Publication Number Publication Date
WO2008151614A2 true WO2008151614A2 (fr) 2008-12-18
WO2008151614A3 WO2008151614A3 (fr) 2009-05-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000951 WO2008151614A2 (fr) 2007-06-13 2008-06-11 Procédé de production d'une microstructure métallique pour un microréacteur

Country Status (2)

Country Link
DE (1) DE102007027837A1 (fr)
WO (1) WO2008151614A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3300798A1 (fr) * 2016-09-30 2018-04-04 Evonik Degussa GmbH Lit fixe de catalyseur comprenant de la mousse métallique
US11260375B2 (en) 2016-09-30 2022-03-01 Evonik Operations Gmbh Process and catalyst for preparing 1,4-butanediol
US11401224B2 (en) 2018-02-14 2022-08-02 Evonik Operations Gmbh Method for the preparation of C3—C12-alcohols by catalytic hydrogenation of the corresponding aldehydes
US11819832B2 (en) 2019-09-25 2023-11-21 Evonik Operations Gmbh Catalytic reactor
US12097562B2 (en) 2017-05-16 2024-09-24 Lg Chem, Ltd. Preparation method for metal foam

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA201290641A1 (ru) * 2010-01-13 2012-12-28 Металл + Пластик Гмбх Система обеззараживания, а также способ
DE102017216569A1 (de) * 2017-09-19 2019-03-21 Alantum Europe Gmbh Verfahren zur Herstellung eines offenporösen Formkörpers, der mit einem Metall gebildet ist und einen mit dem Verfahren hergestellten Formkörper
DE102017216566A1 (de) * 2017-09-19 2019-03-21 Alantum Europe Gmbh Verfahren zur Herstellung eines offenporösen Formkörpers mit modifizierter Oberfläche, der mit einem Metall gebildet ist und einen mit dem Verfahren hergestellten Formkörper

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US3536480A (en) * 1967-01-12 1970-10-27 Tenneco Chem Method of forming inorganic foam materials
KR960003793B1 (ko) * 1993-04-23 1996-03-22 주식회사유공 디젤차량 입자상물질 제거용 촉매체 및 이의 제조방법
US5839049A (en) * 1996-04-24 1998-11-17 Inco Limited Method for varying the density of plated foam
US6200536B1 (en) * 1997-06-26 2001-03-13 Battelle Memorial Institute Active microchannel heat exchanger
US6540975B2 (en) * 1998-07-27 2003-04-01 Battelle Memorial Institute Method and apparatus for obtaining enhanced production rate of thermal chemical reactions
DE10150948C1 (de) * 2001-10-11 2003-05-28 Fraunhofer Ges Forschung Verfahren zur Herstellung gesinterter poröser Körper
DE10218278B4 (de) * 2002-04-19 2005-12-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Mikroreaktor
US7527661B2 (en) * 2005-04-18 2009-05-05 Intelligent Energy, Inc. Compact devices for generating pure hydrogen
DE102005010248B4 (de) * 2005-02-28 2006-10-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung eines offenporigen Metallschaumkörpers, ein so hergestellter Metallschaumkörper sowie seine Verwendungen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3300798A1 (fr) * 2016-09-30 2018-04-04 Evonik Degussa GmbH Lit fixe de catalyseur comprenant de la mousse métallique
WO2018060245A1 (fr) * 2016-09-30 2018-04-05 Evonik Degussa Gmbh Lit de catalyseur fixe comprenant des corps en mousse métallique
US11090637B2 (en) * 2016-09-30 2021-08-17 Evonik Operations Gmbh Fixed catalyst bed comprising metal foam bodies
US11260375B2 (en) 2016-09-30 2022-03-01 Evonik Operations Gmbh Process and catalyst for preparing 1,4-butanediol
US12097562B2 (en) 2017-05-16 2024-09-24 Lg Chem, Ltd. Preparation method for metal foam
US11401224B2 (en) 2018-02-14 2022-08-02 Evonik Operations Gmbh Method for the preparation of C3—C12-alcohols by catalytic hydrogenation of the corresponding aldehydes
US11819832B2 (en) 2019-09-25 2023-11-21 Evonik Operations Gmbh Catalytic reactor

Also Published As

Publication number Publication date
DE102007027837A1 (de) 2008-12-18
WO2008151614A3 (fr) 2009-05-28

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