Abstract: The present invention relates to a porous ceramic structure, and a dehumidification/humidification apparatus comprising the same. More particularly, the present invention comprises: a porous ceramic humidifying medium having an inner circumferential surface and an outer circumferential surface; a dehumidifying medium which has an inner circumferential surface and an outer circumferential surface, and which is disposed in the porous ceramic humidifying medium; and a cutoff layer formed between the inner circumferential surface of the humidifying medium and the outer circumferential surface of the dehumidifying medium. The porous ceramic structure and the dehumidification/humidification apparatus comprising same according to the present invention can easily increase the humidifying and dehumidifying capacity, simplify a flow channel, and achieve a compact design.

Abstract: The present invention relates to a porous ceramic structure, and a dehumidification/humidification apparatus comprising the same. More particularly, the present invention comprises: a porous ceramic humidifying medium having an inner circumferential surface and an outer circumferential surface; a dehumidifying medium which has an inner circumferential surface and an outer circumferential surface, and which is disposed in the porous ceramic humidifying medium; and a cutoff layer formed between the inner circumferential surface of the humidifying medium and the outer circumferential surface of the dehumidifying medium. The porous ceramic structure and the dehumidification/humidification apparatus comprising same according to the present invention can easily increase the humidifying and dehumidifying capacity, simplify a flow channel, and achieve a compact design.

Abstract: The present invention relates to a catalyst including a ceramic structure containing porous ceramic paper and a catalyst component supported on the ceramic structure, and to a method for removing formaldehyde using the catalyst. The present invention provides a catalyst in which a structure made of ceramic paper having excellent characteristics in terms of porosity, specific surface area, and the like is used as a support for the catalyst component to maximize an effective area for reacting the supported catalyst component with a substance to be treated, thereby improving catalyst performance. The present invention also provides a method of using the catalyst.