Title:
高い分散性および特定の微結晶サイズを有するアルミナゲルの製造方法
Document Type and Number:
Japanese Patent JP6886979
Kind Code:
B2
Abstract:
Process for preparing alumina gel in a single precipitation step consisting of dissolving an aluminium precursor, aluminium chloride, in water, at a temperature of 10° C. to 90° C. such that the pH of the solution is from 0.5 to 5, for a period of 2 to 60 minutes, then adjusting the pH to 7.5 to 9.5 by adding a basic precursor, sodium hydroxide, to the solution obtained to obtain a suspension, at a temperature of 5° C. to 35° C., and for 5 minutes to 5 hours, followed by a filtration step, said process not comprising any washing steps. Also, novel alumina gel having a high dispersibility index, in particular a dispersibility index of more than 80%, a crystallite dimension of 0.5 to 10 nm, a chlorine content of 0.001% to 2% by weight and a sodium content of 0.001% to 2% by weight, the percentages by weight being expressed with respect to the total weight of the alumina gel.
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Inventors:
Buareg Marika
Lafon Olivier
Lafon Olivier
Application Number:
JP2018538710A
Publication Date:
June 16, 2021
Filing Date:
January 20, 2017
Export Citation:
Assignee:
IFP ENERGIES NOUVELLES
International Classes:
C01F7/34
Domestic Patent References:
| JP8268716A | ||||
| JP2013129575A | ||||
| JP2007217245A |
Foreign References:
| WO2015189203A1 |
Attorney, Agent or Firm:
Matsumura Naoto
Akira Watanabe
Einosuke Kishimoto
Akira Watanabe
Einosuke Kishimoto