Variety

Property

Active alumina absorbent

Active alumina drying agent

Active alumina catalyst carrier

Normal

High strength

Normal

Air separation

Crystal phase

γType

X-P Type

γType

Chemical composit-ions,

AL2O3

≥92

≥93

≥90

≥95

Na2O

≤0.3

Other

6-8

10

5

Physical properties

Outward size, mm

Ø2-3

Ø3-5

Ø4-6

5-8

Ø2-3

Ø3-5

Ø4-6

Ø2-3

Ø3-5

Ø4-6

Specific surface areas, .m2/g

≥300

300-325

≥300

350±20

200-400

Pore volume, ml/g

≥0.35

≥0.5

0.4±0.05

0.4±0.03

200-400

Static water sorption,

≥15

17-19

≥15

≥19

≥28

Bulk density, g/ml

0.68-0.72

0.74-0.77

0.68-0.72

Abrasion ratio,

≤0.4

Point crushing strength,

Ø2-3

≥70

222-311

Ø2-3

≥70

Ø2-3

≥70

Ø3-5

≥100

Ø3-5

≥100

Ø3-5

≥100

Ø4-6

≥100

Ø4-6

≥100

Ø4-6

≥100