Description

The appearance of aluminum silica gel is silightly yellow or white transparent with chemical molecular formula mSiO₂-nAlO₃xHO Stable chemical properties. Compared with fine porous silica gel, the adsorption capacity of low humidity is similar (such as RH = 10%, RH = 20%), but the adsorption capacity of high humidity (such as RH = 80% RH = 90%) is 6-10%higher than that of the fine porous silica gel, and the thermal stability (350'C) is 150'C higher than fine porous silica gel. So it is very suitable to be used as the variable temperature adsorption and separation agent.

Specification

Items		Indicators
Al₂O₃ %		2-3.5
Specific surface area m²/g		650-750
25℃ Adsorption capacity % wt	RH=10% ≥	5.5
	RH=20% ≥	9.0
	RH=40% ≥	19.5
	RH=60% ≥	34.0
	RH=80% ≥	44.0
Bulk density g/L		650-750
Crushing strength N		180
Pore volume ml/g		0.4-0.6
Moisture % ≤		3.0
Size: 1-3mm, 2-4mm, 2-5mm, 3-5mm.

Application

silica based catalyst carrier is mainly used to separate light hydrocarbon from natural gas, reduce the dew point of hydrocarbon, and produce natural gas gasoline, at the same time, the natural gas is also dried. If water droplets are present in the separation system, about 20% (weight ratio) of water-resistant Si-Al-silica gel should be added as a protective layer.

Silica based catalyst carriers can also be used as a common desiccant, catalystand its carrier, also can be used as PSA, especially suitable for high temperature TSA.