EP 0235126 A4 19880510 - PROCESS FOR PRODUCING A HIGH SURFACE AREA ALUMINA.
Title (en)
PROCESS FOR PRODUCING A HIGH SURFACE AREA ALUMINA.
Title (de)
VERFAHREN ZUR HERSTELLUNG VON TONERDE MIT HOCHAKTIVER OBERFLÄCHE.
Title (fr)
PROCEDE DE PRODUCTION D'UNE ALUMINE A GRANDE SURFACE SPECIFIQUE.
Publication
Application
Priority
US 8501649 W 19850827
Abstract (en)
[origin: WO8701365A1] An alumina having a very high surface area is produced by treating aluminum salt particles with an aqueous solution of ammonium hydroxide and ammonium carbonate at a pH of 9 to 12 to convert the aluminum salt to an ammonium aluminum hydroxycarbonate, then heating the ammonium aluminum hydrocarbonate to between 150<o> and 400<o>C for a period of at least 2 hours to cause its decomposition to alumina.
IPC 1-7
IPC 8 full level
C01F 7/30 (2022.01); C01F 7/782 (2022.01)
CPC (source: EP US)
C01F 7/30 (2013.01 - EP US); C01F 7/782 (2022.01 - EP US); C01P 2006/12 (2013.01 - EP)
Citation (search report)
- No relevant documents have been disclosed.
- See references of WO 8701365A1
Designated contracting state (EPC)
FR
DOCDB simple family (publication)
WO 8701365 A1 19870312; DE 3590012 T1 19870716; EP 0235126 A1 19870909; EP 0235126 A4 19880510; JP S63500794 A 19880324; NL 8520271 A 19870601
DOCDB simple family (application)
US 8501649 W 19850827; DE 3590012 T 19850827; EP 85904387 A 19850827; JP 50391585 A 19850827; NL 8520271 A 19850827