CA2131795A1 - Preparation of stabilized alumina having enhanced resistance to loss of surface area at high temperatures - Google Patents

Preparation of stabilized alumina having enhanced resistance to loss of surface area at high temperatures

Info

Publication number
CA2131795A1
CA2131795A1 CA002131795A CA2131795A CA2131795A1 CA 2131795 A1 CA2131795 A1 CA 2131795A1 CA 002131795 A CA002131795 A CA 002131795A CA 2131795 A CA2131795 A CA 2131795A CA 2131795 A1 CA2131795 A1 CA 2131795A1
Authority
CA
Canada
Prior art keywords
alumina
surface area
boehmite alumina
loss
preparation
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
CA002131795A
Other languages
French (fr)
Other versions
CA2131795C (en
Inventor
Lewis Bernard Decker Jr.
Kevin J. Mclaughlin
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.)
Sasol North America Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2131795A1 publication Critical patent/CA2131795A1/en
Application granted granted Critical
Publication of CA2131795C publication Critical patent/CA2131795C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/021—After-treatment of oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C01P2006/13—Surface area thermal stability thereof at high temperatures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/14—Pore volume
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/16—Pore diameter
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/16—Pore diameter
    • C01P2006/17—Pore diameter distribution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Catalysts (AREA)

Abstract

A process for preparing stabilized alumina having increased surface area retention at high temperature in which a gel of a boehmite alumina which has been obtained by hydrothermally treating an aqueous mixture of a precursor beohmite alumina having a pH of from about 5 to about 9 for a period of time sufficient to convert the greater portion of the precursor boehmite alumina to a colloidal sol is subjected to working as, for example, by using a sufficient shearing force for a sufficient period of time to produce a worked boehmite alumina which has an increase in pore volume of at least about 30 percent and an increase of median pore radius of at least about 20 percent, a stabilizer being added to the boehmite alumina, the stabilizer being an oxide of a metal such as barium or a metal included in the lanthanide series of metals or a compound of such metals which converts to an oxide at elevated temperatures.
CA002131795A 1992-03-12 1993-03-10 Preparation of stabilized alumina having enhanced resistance to loss of surface area at high temperatures Expired - Fee Related CA2131795C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US84988292A 1992-03-12 1992-03-12
US84974792A 1992-03-12 1992-03-12
US849,747 1992-03-12
US849,882 1992-03-12
PCT/US1993/002104 WO1993017968A1 (en) 1992-03-12 1993-03-10 Preparation of stabilized alumina having enhanced resistance to loss of surface area at high temperatures

Publications (2)

Publication Number Publication Date
CA2131795A1 true CA2131795A1 (en) 1993-09-16
CA2131795C CA2131795C (en) 2004-02-03

Family

ID=27126871

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002131795A Expired - Fee Related CA2131795C (en) 1992-03-12 1993-03-10 Preparation of stabilized alumina having enhanced resistance to loss of surface area at high temperatures

Country Status (3)

Country Link
EP (1) EP0630356A4 (en)
CA (1) CA2131795C (en)
WO (1) WO1993017968A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389589A (en) * 1992-12-22 1995-02-14 Allied-Signal Inc. Barium-containing alumina
DE19634855C2 (en) * 1996-08-28 1998-07-02 Haldenwanger Tech Keramik Gmbh Process for the production of an oxidation protection for porous ceramics based on SiC and Si¶3¶N¶4¶
US6129904A (en) * 1996-09-19 2000-10-10 Sud-Chemie A.G. Aluminum oxide masses with very narrow pore radius distribution
CN102448606B (en) * 2009-05-27 2014-03-26 株式会社科特拉 Catalyst for purification of exhaust gas
GB201220912D0 (en) 2012-11-21 2013-01-02 Johnson Matthey Plc Oxidation catalyst for treating the exhaust gas of a compression ignition engine
EP3915675A1 (en) * 2020-05-26 2021-12-01 SASOL Germany GmbH Stable shaped alumina carriers and method for producing same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220559A (en) * 1978-02-14 1980-09-02 Engelhard Minerals & Chemicals Corporation High temperature-stable catalyst composition
JPS5527830A (en) * 1978-08-15 1980-02-28 Chiyoda Chem Eng & Constr Co Ltd Production of alumina carrier
JPS6034733A (en) * 1983-08-04 1985-02-22 Nikki Universal Co Ltd Preparation of carrier of alumina catalyst
US4861410A (en) * 1985-02-25 1989-08-29 University Of Florida Method of joining metal oxide containing ceramic bodies
JPS61245844A (en) * 1985-04-25 1986-11-01 Babcock Hitachi Kk Combustion catalyst and its preparation
US4676928A (en) * 1986-01-30 1987-06-30 Vista Chemical Company Process for producing water dispersible alumina
JPS62180751A (en) * 1986-02-03 1987-08-08 Toyota Central Res & Dev Lab Inc Heat resistant alumina carrier
DE3823895C1 (en) * 1988-07-14 1989-12-21 Condea Chemie Gmbh, 2212 Brunsbuettel, De

Also Published As

Publication number Publication date
EP0630356A4 (en) 1995-06-14
EP0630356A1 (en) 1994-12-28
WO1993017968A1 (en) 1993-09-16
CA2131795C (en) 2004-02-03

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Legal Events

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