FR2223332A1 - Acid treatment of cordierite-structured ceramics - producing improved thermal shock resistance - Google Patents

Acid treatment of cordierite-structured ceramics - producing improved thermal shock resistance

Info

Publication number
FR2223332A1
FR2223332A1 FR7410211A FR7410211A FR2223332A1 FR 2223332 A1 FR2223332 A1 FR 2223332A1 FR 7410211 A FR7410211 A FR 7410211A FR 7410211 A FR7410211 A FR 7410211A FR 2223332 A1 FR2223332 A1 FR 2223332A1
Authority
FR
France
Prior art keywords
cordierite
shock resistance
thermal shock
acid treatment
improved thermal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7410211A
Other languages
French (fr)
Other versions
FR2223332B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Glass Works
Original Assignee
Corning Glass Works
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 Corning Glass Works filed Critical Corning Glass Works
Publication of FR2223332A1 publication Critical patent/FR2223332A1/en
Application granted granted Critical
Publication of FR2223332B3 publication Critical patent/FR2223332B3/fr
Granted legal-status Critical Current

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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/06—Washing
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/04—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by dissolving-out added substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Catalysts (AREA)

Abstract

Sintered ceramic bodies, e.g. for use in heat-exchangers or as catalysts carriers for i.c. engine exhaust gas treatment contg. cordierite as the main crystal phase are treated with a mineral acid to selectively remove MgO and Al2O3 thereby improving the thermal shock resistance.
FR7410211A 1973-03-28 1974-03-26 Acid treatment of cordierite-structured ceramics - producing improved thermal shock resistance Granted FR2223332A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34571773A 1973-03-28 1973-03-28

Publications (2)

Publication Number Publication Date
FR2223332A1 true FR2223332A1 (en) 1974-10-25
FR2223332B3 FR2223332B3 (en) 1977-01-07

Family

ID=23356197

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7410211A Granted FR2223332A1 (en) 1973-03-28 1974-03-26 Acid treatment of cordierite-structured ceramics - producing improved thermal shock resistance

Country Status (6)

Country Link
JP (1) JPS49129704A (en)
BE (1) BE812965A (en)
DE (1) DE2411757A1 (en)
FR (1) FR2223332A1 (en)
IT (1) IT1005699B (en)
NL (1) NL7404141A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202107A2 (en) * 1985-05-14 1986-11-20 Ngk Insulators, Ltd. Low expansion ceramics and method of producing the same
EP0553423A1 (en) * 1992-01-03 1993-08-04 Corning Incorporated Expansion reduction of cordierite

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792574A (en) * 1980-11-28 1982-06-09 Nippon Denso Co Manufacture of cordierite ceramics
JP2981107B2 (en) * 1994-03-07 1999-11-22 日本碍子株式会社 Method for producing cordierite honeycomb ceramics
CN100444954C (en) * 2003-12-15 2008-12-24 独立行政法人产业技术综合研究所 Needle-shaped ceramic body, needle-shaped ceramic catalyst body and method for producing same
JP5099656B2 (en) * 2003-12-15 2012-12-19 独立行政法人産業技術総合研究所 Needle-shaped ceramic body, needle-shaped ceramic catalyst body and method for producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202107A2 (en) * 1985-05-14 1986-11-20 Ngk Insulators, Ltd. Low expansion ceramics and method of producing the same
EP0202107A3 (en) * 1985-05-14 1987-12-02 Ngk Insulators, Ltd. Low expansion ceramics and method of producing the same
EP0553423A1 (en) * 1992-01-03 1993-08-04 Corning Incorporated Expansion reduction of cordierite

Also Published As

Publication number Publication date
NL7404141A (en) 1974-10-01
JPS49129704A (en) 1974-12-12
BE812965A (en) 1974-09-30
FR2223332B3 (en) 1977-01-07
IT1005699B (en) 1976-09-30
DE2411757A1 (en) 1974-10-10

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Legal Events

Date Code Title Description
ST Notification of lapse