FR2413323A1 - Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium - Google Patents

Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium

Info

Publication number
FR2413323A1
FR2413323A1 FR7739896A FR7739896A FR2413323A1 FR 2413323 A1 FR2413323 A1 FR 2413323A1 FR 7739896 A FR7739896 A FR 7739896A FR 7739896 A FR7739896 A FR 7739896A FR 2413323 A1 FR2413323 A1 FR 2413323A1
Authority
FR
France
Prior art keywords
alumina
obtd
particles
catalysts
medium
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
FR7739896A
Other languages
French (fr)
Other versions
FR2413323B1 (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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Priority to FR7739896A priority Critical patent/FR2413323A1/en
Publication of FR2413323A1 publication Critical patent/FR2413323A1/en
Application granted granted Critical
Publication of FR2413323B1 publication Critical patent/FR2413323B1/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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
    • 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
    • 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
    • B01J35/51—Spheres
    • 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
    • C01F7/025—Granulation or agglomeration
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

Shaped alumina particles are obtd. by introducing an aq. slurry contg. a substantial portion of rehydratable alumina to a shaping medium and applying heat to the medium to rehydrate and harden the alumina, followed by curing, drying and calcining the obtd. particles. The medium is (a) a water-immiscible phase into which droplets of the slurry are introduced and shaped by surface tension forces into a spherical beaded form; or (b) tubing which produces alumina in extrude form. The particles are suitable for catalysts and catalyst supports. No additional chemical reagents are required to effect hardening. Less energy is required compared with conventional methods. The prod. has high isotropicity, crush strength and porosity.
FR7739896A 1977-12-30 1977-12-30 Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium Granted FR2413323A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739896A FR2413323A1 (en) 1977-12-30 1977-12-30 Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739896A FR2413323A1 (en) 1977-12-30 1977-12-30 Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium

Publications (2)

Publication Number Publication Date
FR2413323A1 true FR2413323A1 (en) 1979-07-27
FR2413323B1 FR2413323B1 (en) 1983-10-14

Family

ID=9199591

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739896A Granted FR2413323A1 (en) 1977-12-30 1977-12-30 Shaped alumina particles for catalysts - obtd. by passing an aq. rehydratable alumina slurry through a heated shaping medium

Country Status (1)

Country Link
FR (1) FR2413323A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506630A1 (en) * 1981-06-02 1982-12-03 Mitsubishi Chem Ind HYDROGENATION CATALYST FOR THE SULFURIZATION AND REMOVAL OF HEAVY METALS
EP0327721A2 (en) * 1988-02-09 1989-08-16 Degussa Aktiengesellschaft Die-formed articles based on pyrogenic aluminium oxide, process for their production and their use
WO1992019535A1 (en) * 1991-05-06 1992-11-12 Alcan International Limited Process for producing agglomerates from dust originating from thermal treatment of materials containing alumina

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1231293A (en) * 1958-06-30 1960-09-28 American Cyanamid Co Process for the preparation of novel phosphorothioic esters by reaction between a dialkyl phosphorothioate salt and a chloromethylpyridazinone, and products obtained by this process
FR1231993A (en) * 1958-08-13 1960-10-04 Basf Ag Process for the production of globules containing alumina
US3856708A (en) * 1972-04-10 1974-12-24 Reynolds Metals Co Alumina catalyst support
FR2299911A1 (en) * 1975-02-04 1976-09-03 Kali Chemie Ag PROCESS FOR THE MANUFACTURING OF SPHERICAL PARTICLES CONTAINING ALUMINA AND PRODUCTS OBTAINED
FR2351171A2 (en) * 1976-05-11 1977-12-09 Combacal Clement Thermal treatment unit for wine-making plant - to complete extn. of anthocyanin in closed circuit
FR2351071A1 (en) * 1976-05-10 1977-12-09 American Cyanamid Co Rehydratable alumina mixed with other forms of alumina - to facilitate extrusion of rods which are cut to make catalyst pellets (NL 14.11.77)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1231293A (en) * 1958-06-30 1960-09-28 American Cyanamid Co Process for the preparation of novel phosphorothioic esters by reaction between a dialkyl phosphorothioate salt and a chloromethylpyridazinone, and products obtained by this process
FR1231993A (en) * 1958-08-13 1960-10-04 Basf Ag Process for the production of globules containing alumina
US3856708A (en) * 1972-04-10 1974-12-24 Reynolds Metals Co Alumina catalyst support
FR2299911A1 (en) * 1975-02-04 1976-09-03 Kali Chemie Ag PROCESS FOR THE MANUFACTURING OF SPHERICAL PARTICLES CONTAINING ALUMINA AND PRODUCTS OBTAINED
FR2351071A1 (en) * 1976-05-10 1977-12-09 American Cyanamid Co Rehydratable alumina mixed with other forms of alumina - to facilitate extrusion of rods which are cut to make catalyst pellets (NL 14.11.77)
FR2351171A2 (en) * 1976-05-11 1977-12-09 Combacal Clement Thermal treatment unit for wine-making plant - to complete extn. of anthocyanin in closed circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506630A1 (en) * 1981-06-02 1982-12-03 Mitsubishi Chem Ind HYDROGENATION CATALYST FOR THE SULFURIZATION AND REMOVAL OF HEAVY METALS
EP0327721A2 (en) * 1988-02-09 1989-08-16 Degussa Aktiengesellschaft Die-formed articles based on pyrogenic aluminium oxide, process for their production and their use
EP0327721A3 (en) * 1988-02-09 1989-10-18 Degussa Aktiengesellschaft Die-formed articles based on parogenic aluminium oxide, process for their production and their use
WO1992019535A1 (en) * 1991-05-06 1992-11-12 Alcan International Limited Process for producing agglomerates from dust originating from thermal treatment of materials containing alumina

Also Published As

Publication number Publication date
FR2413323B1 (en) 1983-10-14

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