Amorphous aluminum oxides, methods of production and uses

Details Amorphous aluminum oxides, methods of production and uses Amorphous aluminum oxides, methods of production and uses

1989-11-14

1991-10-29

Morris, Theodore

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

501153, C01F 702

Patent

active

050614746

ABSTRACT:
X-ray amorphous, aluminum oxide which exhibits a specific surface area (BET) according to DIN 66 131 of >10 m.sup.2 /g, an average particle size of .gtoreq.0.1 .mu.m and a water content of >10%. The X-ray amorphous aluminum oxide can be produced by reacting water vapor and vaporous aluminum trichloride in a molar ratio of 1.5 to 10:1, preferably 7.+-.1:1=H.sub.2 O:alCl.sub.3 at a temperature of 200.degree. to 1000.degree. C., preferably 600.degree..+-.50.degree. C. and at a dwell time of >1 sec., preferably 3.5.+-.1 sec. and a partial vacuum of 100.+-.10 mm H.sub.2 O column. By means of calcination thereof an aluminum oxide can be obtained which consists of .gtoreq.90% by weight of .alpha.-aluminum oxide and exhibits a specific surface area (BET) according to DIN 66 131 of >5 m.sup.2 /g and an average particle size of .gtoreq.0.1 .mu.m.

REFERENCES:
patent: 3038784 (1962-06-01), Torkar et al.
patent: 3867312 (1975-02-01), Stephens
patent: 3887492 (1975-06-01), Hayes
patent: 3887493 (1975-06-01), Hayes
patent: 3941719 (1976-03-01), Yoldas
patent: 3944658 (1976-03-01), Yoldas
patent: 4154812 (1979-05-01), Sanchez et al.
patent: 4371513 (1983-02-01), Sanchez et al.
patent: 4708945 (1987-11-01), Murrell et al.
patent: 4750992 (1988-06-01), Romine
patent: 4770869 (1988-09-01), Misra et al.

Affiliated with

Also associated with

Rating

Amorphous aluminum oxides, methods of production and uses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amorphous aluminum oxides, methods of production and uses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amorphous aluminum oxides, methods of production and uses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1399225