ES8701690A1 - Un procedimiento para preparar alfa-alumina. - Google Patents

Un procedimiento para preparar alfa-alumina.

Info

Publication number
ES8701690A1
ES8701690A1 ES550980A ES550980A ES8701690A1 ES 8701690 A1 ES8701690 A1 ES 8701690A1 ES 550980 A ES550980 A ES 550980A ES 550980 A ES550980 A ES 550980A ES 8701690 A1 ES8701690 A1 ES 8701690A1
Authority
ES
Spain
Prior art keywords
alpha
alumina
precursor
treatment
room temperature
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.)
Expired
Application number
ES550980A
Other languages
English (en)
Other versions
ES550980A0 (es
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of ES550980A0 publication Critical patent/ES550980A0/es
Publication of ES8701690A1 publication Critical patent/ES8701690A1/es
Expired 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • C01P2006/10—Solid density
    • 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
    • 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

Abstract

PROCEDIMIENTO PARA PREPARAR ALFA-ALUMINA. CONSISTE EN QUE UN PRECURSOR CON UN CONTENIDO DE AGUA QUE OSCILA ENTRE 2 Y 35% EN PESO, EN FORMA DE PARTICULAS ESFERICAS NO AGREGADAS, CON UN INDICE DE POLIDISPERSION INFERIOR A 2,0 Y UN DIAMETRO LINEAL MEDIO DE 0,07 A 2,3 MM, ES SOMETIDO A CALENTAMIENTO INSTANTANEO DESDE TEMPERATURAS ENTRE LA AMBIENTE Y 850JC, HASTA TEMPERATURAS ENTRE 1.130 Y 1.700JC, DURANTE TIEMPOS SUFICIENTES PARA CONVERTIR EL PRECURSOR EN ALFA-ALUMINA PERO QUE NO SE PRODUZCAN DISGREGACIONES O AGREGACIONES DEL PRODUCTO, Y LLEVARLO DE NUEVO A TEMPERATURA AMBIENTE MEDIANTE ENFRIAMIENTO NO INSTANTANEO DURANTE AL MENOS 10 SEGUNDOS. DE APLICACION EN MATERIALES CERAMICOS DE EMPLEO EN LAS INDUSTRIAS ELECTRONICA Y ELECTRICA Y COMO MATERIAL DE CORTE.
ES550980A 1985-01-18 1986-01-17 Un procedimiento para preparar alfa-alumina. Expired ES8701690A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19142/85A IT1184114B (it) 1985-01-18 1985-01-18 Alfa allumina sotto forma di particelle sferiche,non aggregate,a distribuzione granulometrica ristretta e di dimensioni inferiori a 2 micron,e processo per la sua preparazione

Publications (2)

Publication Number Publication Date
ES550980A0 ES550980A0 (es) 1986-12-01
ES8701690A1 true ES8701690A1 (es) 1986-12-01

Family

ID=11155198

Family Applications (1)

Application Number Title Priority Date Filing Date
ES550980A Expired ES8701690A1 (es) 1985-01-18 1986-01-17 Un procedimiento para preparar alfa-alumina.

Country Status (10)

Country Link
US (1) US4818515A (es)
EP (1) EP0188388B1 (es)
JP (1) JPS61256921A (es)
KR (1) KR900004065B1 (es)
AU (1) AU585568B2 (es)
CA (1) CA1288575C (es)
DE (1) DE3672502D1 (es)
ES (1) ES8701690A1 (es)
IT (1) IT1184114B (es)
SU (1) SU1709901A3 (es)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4902666A (en) * 1986-07-02 1990-02-20 Chevron Research Company Process for the manufacture of spheroidal bodies by selective agglomeration
US5340781A (en) * 1986-07-14 1994-08-23 Showa Denko Kabushiki Kaisha Spherical corundum particles, process for preparation thereof and rubber or plastic composition having high thermal conductivity and having spherical corundum paticles incorporated therein
US5149520A (en) * 1987-12-23 1992-09-22 Aluminum Company Of America Small sized alpha alumina particles and platelets
AU650382B2 (en) * 1992-02-05 1994-06-16 Norton Company Nano-sized alpha alumina particles
US6258137B1 (en) 1992-02-05 2001-07-10 Saint-Gobain Industrial Ceramics, Inc. CMP products
DE4241625C1 (de) * 1992-12-10 1994-06-30 Veitsch Radex Ag Verfahren zur Herstellung von sinteraktivem, weitestgehend sphärischem Aluminiumoxid sowie dessen Verwendung
HU215748B (hu) * 1993-07-27 1999-02-01 Sumitomo Chemical Co. Alumínium-oxid kompozíció, öntött alumínium-oxid termék, alumínium-oxid kerámia, eljárás a kerámia előállítására és alumínium-oxid részecskék alkalmazása oxidkerámiákhoz
AUPN053395A0 (en) * 1995-01-12 1995-02-09 Alcoa Of Australia Limited Production of alpha alumina
AU699077B2 (en) * 1995-02-21 1998-11-19 Sumitomo Chemical Company, Limited Alpha-alumina and method for producing the same
DE19836821A1 (de) * 1998-08-14 2000-02-24 Rwe Dea Ag Böhmitische Tonerden und aus diesen erhältliche phasenreine, hochtemperaturstabile und hochporöse Aluminiumoxide
DE10035679A1 (de) * 2000-07-21 2002-01-31 Inst Neue Mat Gemein Gmbh Nanoskalige Korundpulver, daraus gefertigte Sinterkörper und Verfahren zu deren Herstellung
JP4836163B2 (ja) * 2004-12-20 2011-12-14 独立行政法人産業技術総合研究所 アルミナ粉末の製造方法及びその方法で得られるアルミナ粉末
DE102005040286A1 (de) * 2005-08-25 2007-03-01 Basf Ag Mechanisch stabiler Katalysator auf Basis von alpha-Aluminiumoxid
JP2007331978A (ja) * 2006-06-15 2007-12-27 Shin Etsu Chem Co Ltd 押出成形又は射出成形用の組成物及び成形体の製造方法
US20080271384A1 (en) * 2006-09-22 2008-11-06 Saint-Gobain Ceramics & Plastics, Inc. Conditioning tools and techniques for chemical mechanical planarization
US7417003B2 (en) * 2006-12-29 2008-08-26 Uop Llc Solid acid catalyst and process for decomposition of cumene hydroperoxide
CN101711226A (zh) * 2007-01-15 2010-05-19 圣戈本陶瓷及塑料股份有限公司 陶瓷微粒材料及其制备方法
JP2008195569A (ja) * 2007-02-13 2008-08-28 Kanto Denka Kogyo Co Ltd アルミナ微粒子
EP2281782B1 (en) * 2008-04-30 2016-12-07 Denka Company Limited Alumina powder, process for production of the same, and resin compositions containing the same
FR2943333B1 (fr) * 2009-03-20 2011-08-05 Baikowski Alumine, luminophores et composes mixtes ainsi que procedes de preparation associes
CN103962943A (zh) 2009-03-24 2014-08-06 圣戈班磨料磨具有限公司 用作化学机械平坦化垫修整器的研磨工具
US8905823B2 (en) * 2009-06-02 2014-12-09 Saint-Gobain Abrasives, Inc. Corrosion-resistant CMP conditioning tools and methods for making and using same
US20110097977A1 (en) * 2009-08-07 2011-04-28 Abrasive Technology, Inc. Multiple-sided cmp pad conditioning disk
SG178605A1 (en) 2009-09-01 2012-04-27 Saint Gobain Abrasives Inc Chemical mechanical polishing conditioner
JP5410245B2 (ja) * 2009-11-11 2014-02-05 電気化学工業株式会社 球状アルミナ粉末、その製造方法及び用途。
JP5636312B2 (ja) * 2010-03-09 2014-12-03 住友化学株式会社 サファイア単結晶製造用αアルミナおよびその製造方法
ES2374479B1 (es) * 2010-08-06 2012-12-26 Universitat De Valencia Procedimiento de obtención de corindón nanocristalino a partir de alumbres naturales o sintéticos.
CA2812747A1 (en) * 2010-10-01 2012-04-05 Saint-Gobain Ceramics & Plastics, Inc. Multiphase alumina particle
CN104787792A (zh) * 2015-02-16 2015-07-22 青海圣诺光电科技有限公司 一种制备γ-氧化铝的方法
CN104787786A (zh) * 2015-02-16 2015-07-22 青海圣诺光电科技有限公司 一种制备α-氧化铝的方法
JP6961428B2 (ja) * 2017-09-08 2021-11-05 一般財団法人ファインセラミックスセンター 多孔質アルミナ焼結体及びその製造方法
JP7216390B2 (ja) * 2018-03-26 2023-02-01 河合石灰工業株式会社 α－アルミナ及び結晶粒子の内部に複数の空孔を有するα－アルミナの製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642337A (en) * 1948-06-09 1953-06-16 Aluminum Co Of America Method of converting crystalline alumina hydrate to alpha alumina
US3003919A (en) * 1956-06-22 1961-10-10 Procter & Gamble Alumina abrasive materials
FR1248038A (fr) * 1959-10-28 1960-12-09 Electrochimie Electrometallurg Procédé de fabrication d'alumines anhydres
US4012337A (en) * 1974-03-13 1977-03-15 Exxon Research And Engineering Company High surface area alpha aluminas
NO791174L (no) * 1978-04-20 1979-10-23 Smidth & Co As F L Fremgangsmaate for fremstilling av vannfri aluminiumoksyd

Also Published As

Publication number Publication date
EP0188388A3 (en) 1988-04-06
EP0188388A2 (en) 1986-07-23
JPS61256921A (ja) 1986-11-14
AU5242686A (en) 1986-07-24
ES550980A0 (es) 1986-12-01
IT1184114B (it) 1987-10-22
KR900004065B1 (ko) 1990-06-11
EP0188388B1 (en) 1990-07-11
KR860005749A (ko) 1986-08-13
IT8519142A0 (it) 1985-01-18
CA1288575C (en) 1991-09-10
AU585568B2 (en) 1989-06-22
DE3672502D1 (de) 1990-08-16
US4818515A (en) 1989-04-04
SU1709901A3 (ru) 1992-01-30

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519