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GB2018230A - Manufacture of spheroidal alumina particles - Google Patents

Manufacture of spheroidal alumina particles

Info

Publication number
GB2018230A
GB2018230A GB7907587A GB7907587A GB2018230A GB 2018230 A GB2018230 A GB 2018230A GB 7907587 A GB7907587 A GB 7907587A GB 7907587 A GB7907587 A GB 7907587A GB 2018230 A GB2018230 A GB 2018230A
Authority
GB
United Kingdom
Prior art keywords
spheres
particles
deg
wt
aged
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
GB7907587A
Other versions
GB2018230B (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.)
Honeywell UOP LLC
Original Assignee
Honeywell UOP LLC
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
Priority to US88429178A priority Critical
Application filed by Honeywell UOP LLC filed Critical Honeywell UOP LLC
Publication of GB2018230A publication Critical patent/GB2018230A/en
Application granted granted Critical
Publication of GB2018230B publication Critical patent/GB2018230B/en
Application status is Expired legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04Alumina
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/0052Preparation of gels
    • B01J13/0056Preparation of gels containing inorganic material and water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/02Solids
    • B01J35/08Spheres

Abstract

The invention seeks to provide a method of preparing spheroidal alumina particles of improved physical stability and substantially free from the stress cracks and fractures typical of the prior art. According to the invention alumina hydrogel particles prepared by the oil-drop method are aged in the forming oil at about atmospheric pressure conditions and at a temperature of from 95 DEG to 105 DEG C until the hydrogel spheres achieve a pH of from 6 to 7.5. The forming oil is thereafter displaced with an ammonium salt-buffered aqueous ammoniacal solution containing from 0.5 to 10 wt. % ammonium salt and from 0.1 to 1 wt. % ammonia, and the hydrogen spheres aged therein for a brief period of at least 10 minutes. After further aging in an aqueous ammoniacal solution in accordance with prior art practice, the spheres are water-washed, dried and calcined. The spheroidal alumna particles are mainly used as supports for reforming catalysts comprising Pt group metals with or without Sn, Re, Ge and/or Co component.
GB7907587A 1978-03-06 1979-03-05 Manufacture of spheroidal alumina particles Expired GB2018230B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US88429178A true 1978-03-06 1978-03-06

Publications (2)

Publication Number Publication Date
GB2018230A true GB2018230A (en) 1979-10-17
GB2018230B GB2018230B (en) 1982-05-19

Family

ID=25384330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7907587A Expired GB2018230B (en) 1978-03-06 1979-03-05 Manufacture of spheroidal alumina particles

Country Status (5)

Country Link
JP (1) JPS5635607B2 (en)
DE (1) DE2908740C3 (en)
FR (1) FR2419106B1 (en)
GB (1) GB2018230B (en)
IT (1) IT1113441B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346044A1 (en) * 1982-12-20 1984-07-12 Catalyse Soc Prod Francais A method for the treatment of hydrocarbons in the presence of a solid catalyst
US9945009B2 (en) 2011-03-18 2018-04-17 Orbite Technologies Inc. Processes for recovering rare earth elements from aluminum-bearing materials
US10174402B2 (en) 2011-09-16 2019-01-08 Orbite Technologies Inc. Processes for preparing alumina and various other products

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216122A (en) * 1978-11-13 1980-08-05 Uop Inc. Manufacture of high surface area spheroidal alumina particles having a high average bulk density
JPS57187409U (en) * 1981-05-23 1982-11-27
JPS5870203A (en) * 1981-10-23 1983-04-26 Kokusai Denshin Denwa Co Ltd <Kdd> Fiber unit for optical submarine cable
JPS62136236A (en) * 1985-12-10 1987-06-19 Murai Tsugio Preparation of granular substance by spray drying
EP0507122B1 (en) * 1991-03-11 1995-01-11 Mitsubishi Oil Co., Ltd. Process for producing spherical zeolite catalyst and apparatus for producing the same
AU2012250460B2 (en) 2011-05-04 2015-11-26 Orbite Aluminae Inc. Processes for recovering rare earth elements from various ores
EP2714594A4 (en) 2011-06-03 2015-05-20 Orbite Aluminae Inc Methods for preparing hematite
RU2597096C2 (en) 2012-07-12 2016-09-10 Орбит Алюминэ Инк. Methods of producing titanium oxide and other products
US9023301B2 (en) 2012-01-10 2015-05-05 Orbite Aluminae Inc. Processes for treating red mud
AU2013203808B2 (en) 2012-03-29 2016-07-28 Orbite Aluminae Inc. Processes for treating fly ashes
WO2014047728A1 (en) 2012-09-26 2014-04-03 Orbite Aluminae Inc. Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials
WO2014075173A1 (en) 2012-11-14 2014-05-22 Orbite Aluminae Inc. Methods for purifying aluminium ions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739396A (en) * 1952-08-15 1955-10-26 Universal Oil Prod Co Manufacture of spheroidal alumina
DE1960289C3 (en) * 1969-12-02 1975-09-11 Kernforschungsanlage Juelich Gmbh, 5170 Juelich
US3919117A (en) * 1974-03-18 1975-11-11 Universal Oil Prod Co Method of preparing alumina spheres
JPS5627448B2 (en) * 1977-02-25 1981-06-25

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346044A1 (en) * 1982-12-20 1984-07-12 Catalyse Soc Prod Francais A method for the treatment of hydrocarbons in the presence of a solid catalyst
US9945009B2 (en) 2011-03-18 2018-04-17 Orbite Technologies Inc. Processes for recovering rare earth elements from aluminum-bearing materials
US10174402B2 (en) 2011-09-16 2019-01-08 Orbite Technologies Inc. Processes for preparing alumina and various other products

Also Published As

Publication number Publication date
GB2018230B (en) 1982-05-19
IT7920747D0 (en) 1979-03-05
DE2908740A1 (en) 1979-09-13
DE2908740C3 (en) 1982-04-08
DE2908740B2 (en) 1981-02-26
FR2419106B1 (en) 1982-11-19
JPS54163798A (en) 1979-12-26
JPS5635607B2 (en) 1981-08-18
IT1113441B (en) 1986-01-20
FR2419106A1 (en) 1979-10-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940305