JPS6437417A - Production of porous alumina having large surface area - Google Patents

Production of porous alumina having large surface area

Info

Publication number
JPS6437417A
JPS6437417A JP62192152A JP19215287A JPS6437417A JP S6437417 A JPS6437417 A JP S6437417A JP 62192152 A JP62192152 A JP 62192152A JP 19215287 A JP19215287 A JP 19215287A JP S6437417 A JPS6437417 A JP S6437417A
Authority
JP
Japan
Prior art keywords
alumina
hydrogel
range
insoluble
sodium aluminate
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
JP62192152A
Other languages
Japanese (ja)
Other versions
JPH0262489B2 (en
Inventor
Sachio Asaoka
Yu Kawaguchi
Yasuyuki Morimoto
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.)
Chiyoda Corp
Chiyoda Chemical Engineering and Construction Co Ltd
Original Assignee
Chiyoda Corp
Chiyoda Chemical Engineering and Construction Co Ltd
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 Chiyoda Corp, Chiyoda Chemical Engineering and Construction Co Ltd filed Critical Chiyoda Corp
Priority to JP62192152A priority Critical patent/JPS6437417A/en
Publication of JPS6437417A publication Critical patent/JPS6437417A/en
Publication of JPH0262489B2 publication Critical patent/JPH0262489B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Catalysts (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE:To easily obtain a porous alumina having large surface area in high efficiency, by carrying out crystal growth of a seed alumina hydrogel while causing the pH variation within an insoluble range of alumina hydrogel particle, thereby forming alumina hydrogel particles having prescribed particle diameter with decreased addition frequency of the raw material compared with conventional process. CONSTITUTION:Alumina is produced from aluminum sulfate and sodium aluminate by the following process. A seed alumina hydrogel is alternately added with aluminum sulfate and sodium aluminate within the insoluble pH range of alumina hydrogel particle. The deviation of the pH of the hydrogel from the insoluble range is prevented by controlling the amounts of aluminum sulfate and sodium aluminate and the pH condition during the addition of the above aluminum compounds. The raw materials are alternately added to the system while keeping the pH of the hydrogel within the insoluble range and varying the pH within the above range.
JP62192152A 1987-07-31 1987-07-31 Production of porous alumina having large surface area Granted JPS6437417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62192152A JPS6437417A (en) 1987-07-31 1987-07-31 Production of porous alumina having large surface area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192152A JPS6437417A (en) 1987-07-31 1987-07-31 Production of porous alumina having large surface area

Publications (2)

Publication Number Publication Date
JPS6437417A true JPS6437417A (en) 1989-02-08
JPH0262489B2 JPH0262489B2 (en) 1990-12-25

Family

ID=16286563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192152A Granted JPS6437417A (en) 1987-07-31 1987-07-31 Production of porous alumina having large surface area

Country Status (1)

Country Link
JP (1) JPS6437417A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5800797A (en) * 1993-12-09 1998-09-01 Catalysts & Chemicals Industries Co., Ltd. Process for producing alumina and apparatus therefor
JP2003201120A (en) * 2001-12-28 2003-07-15 Chiyoda Corp Porous titanium oxide and its manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5800797A (en) * 1993-12-09 1998-09-01 Catalysts & Chemicals Industries Co., Ltd. Process for producing alumina and apparatus therefor
JP2003201120A (en) * 2001-12-28 2003-07-15 Chiyoda Corp Porous titanium oxide and its manufacturing method

Also Published As

Publication number Publication date
JPH0262489B2 (en) 1990-12-25

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