Composite for chemical filter, preparing method thereof, and outdoor air conditioner including the same

A method for preparing a composite for a chemical filter in an outdoor air conditioner comprising:

• degassing porous silica;
• preparing an aqueous solution by mixing a manganese-based oxide and distilled water;
• impregnating the aqueous solution in the degassed porous silica;
• and
• drying the porous silica impregnated with the aqueous solution including the manganese-based oxide to form the composite for a chemical filter,
• wherein the composite for a chemical filter satisfies Equation 1,
• 4.2
• ≤
• W
• Mn
• /
• P
• ⁢
• V
• Si
• ≤
• 20
• <
• Equation
• ⁢
• 1
• >
• wherein WMn represents wt % of the manganese-based oxide with reference to 100 wt % of the composite for a chemical filter, and PVSi represents a pore volume of porous silica.

An outdoor air conditioner comprising:

• a housing including an outdoor air inlet and an outdoor air outlet;
• a prefilter portion in the housing, configured to filter foreign substances from outdoor air input into the housing through the outdoor air inlet;
• a temperature adjuster in the housing, configured to heat or cool the outdoor air within the housing;
• a blower in the housing, configured to supply the outdoor air into a semiconductor fab;
• and
• a filter portion in the housing, configured to remove contaminants from outdoor air discharged from the blower,
• wherein the filter portion includes a chemical filter configured to filter a gas phase in the contaminants,
• wherein the chemical filter includes a charging layer including a composite for a chemical filter, and
• wherein the composite for a chemical filter includes a matrix including porous silica and a manganese-based oxide impregnated in the matrix, and the composite satisfies Equation 1
• 4.2
• ≤
• W
• Mn
• /
• P
• ⁢
• V
• Si
• ≤
• 20
• <
• Equation
• ⁢
• 1
• >
• wherein WMn represents wt % of the manganese-based oxide with reference to 100 wt % of the composite for a chemical filter, and PVSi represents a pore volume of porous silica.