Formaldehyde Catalytic Filter Mesh

Oltaven formaldehyde catalytic filter mesh is a finished filter that decomposes formaldehyde and other volatile organic compounds (VOCs) through catalytic oxidation at room temperature. It is designed for air purifiers, residential air conditioners and HVAC systems that require continuous formaldehyde removal without ozone or secondary pollution. The filter uses high-activity manganese dioxide (δ-MnO₂) or composite manganese oxides as the active catalyst, and is available in honeycomb activated carbon, porous ceramic or fibrous composite forms.

From Media to Finished Filter

The performance of a catalytic filter is not determined by the catalyst alone. The way the active material is supported, shaped and assembled into the final product decides how much air can be treated, how much resistance the filter adds to the system, and how long it remains effective. At Oltaven, we manufacture finished filters, not just supply media. Our engineering team selects the catalyst loading, chooses the substrate structure (honeycomb, ceramic or fibre), and designs the pleating, framing and sealing to match each customer’s device. This integrated approach ensures that the finished filter delivers the intended formaldehyde removal efficiency (CADR ≥ 300 m³/h) and cumulative clean air delivery (CCM F4 grade) in real operating conditions.

For example, a honeycomb substrate provides a high surface area and low pressure drop, making it suitable for high-flow applications. A fibrous composite can be pleated to increase dust-holding capacity, but the pleating pattern and frame design must avoid bypass and ensure uniform airflow. The sealing method—whether gasket or adhesive—prevents unfiltered air from circumventing the catalyst. Each decision influences the final balance of efficiency, resistance and capacity.

What Decides Finished Performance

Three main factors govern the performance of a finished catalytic filter: the catalyst itself, the substrate and forming, and the assembly and sealing.

Catalyst and Loading

The catalyst’s activity and the amount loaded onto the substrate determine the intrinsic reaction rate. Oltaven uses high-activity manganese dioxide (δ-MnO₂) or composite manganese oxides, which are known for their ability to oxidize formaldehyde at room temperature without the need for additional energy. The loading must be optimized: too little reduces efficiency, while too much can increase resistance and cost.

Substrate and Forming

The substrate provides the surface for the catalyst and defines the airflow path. Honeycomb structures offer straight channels with low resistance and are often used in air purifiers. Porous ceramic cores provide thermal stability and can be used in harsher environments. Fibrous composite filters can be pleated to increase surface area within a compact frame, but the pleat design must balance efficiency and pressure drop. The forming process—including pleating, corrugation and cutting—affects the uniformity of the catalyst coating and the structural integrity of the filter.

Assembly and Sealing

The frame and sealing ensure that all air passes through the filter medium. A poorly sealed filter allows unfiltered air to bypass, reducing overall efficiency. Oltaven designs frames that match the device’s mounting and uses sealing methods that maintain a tight fit over the filter’s life. The choice of frame material (e.g., plastic, metal) and sealing compound must be compatible with the operating temperature and humidity range (5°C–50°C, 30%–90% RH).

Together, these factors determine the filter’s efficiency (CADR ≥ 300 m³/h), resistance, and capacity (CCM F4, ≥1500 mg). Oltaven’s engineering team works with customers to fine-tune these parameters for each application.

Applications

Oltaven formaldehyde catalytic filter mesh is used in:

• Residential air purifiers: For continuous removal of formaldehyde and VOCs in homes, especially in newly decorated spaces.
• Air conditioners: Integrated into split or central air conditioning systems to improve indoor air quality.
• HVAC systems: For commercial and residential buildings where formaldehyde control is required.
• Automotive cabins: As part of cabin air filtration to reduce VOC exposure.

The filter is effective in environments with temperatures from 5°C to 50°C and relative humidity from 30% to 90%. Its long service life (12–36 months depending on pollution concentration) makes it suitable for applications where maintenance intervals are long.

Technical Specifications

The Oltaven Factory and Certifications

Oltaven has over 20 years of experience in filter research and manufacturing, exporting to Europe, the United States, Japan and South Korea. Our OEM/ODM capabilities include customization of size, structure, filter grade, frame material, logo and packaging, and we have developed more than 1,000 filtration solutions. Our production base covers 50,000 square meters, including six cleanrooms totaling 20,000 square meters. The in-house laboratory is CNAS-accredited and can issue test reports on filtration efficiency, dust holding capacity and resistance. We are certified to IATF 16949 (2024), ISO 9001, ISO 14001 and ISO 45001, and our products comply with REACH and RoHS regulations, with compliance documents available upon request.

OEM/ODM Workflow

1. Inquiry: Provide your device model, required dimensions or drawings, airflow or water flow, operating conditions and estimated quantity. Our team will review and respond with a proposal.
2. Solution design: Oltaven engineers select the catalyst, substrate and forming method to meet your performance targets, and provide a design for approval.
3. Sample production: We produce samples for your testing and validation. Sample policies are discussed during the inquiry.
4. Validation: You test the samples in your device; we adjust if needed.
5. Production: After approval, we manufacture in our cleanrooms with IQC, IPQC and OQC quality control.
6. Delivery: We ship according to agreed terms.

Start a Custom Project

To discuss your formaldehyde catalytic filter requirements, please contact us through our contact page. Provide your device or vehicle model, required size or drawing, airflow or water flow, operating conditions, and estimated quantity. Our team will work with you to develop a filter that meets your performance and integration needs. We look forward to partnering with you.