A red mud-based composite catalytic material for degrading asphalt VOCs and its application
By leveraging the porous structure of the red mud-based composite catalytic material and the synergistic effect of the aminosilane coupling agent, VOCs are adsorbed and catalyzed to convert into CO2, solving the problem of efficient degradation and resource utilization of VOCs in asphalt and improving the stability and durability of asphalt.
CN122076532APending Publication Date: 2026-05-26HUBEI UNIV OF ARTS & SCI
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUBEI UNIV OF ARTS & SCI
- Filing Date
- 2026-03-13
- Publication Date
- 2026-05-26
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Figure CN122076532A_ABST
Abstract
This invention provides a red mud-based composite catalyst for degrading VOCs in asphalt and its application, belonging to the technical field of industrial solid waste resource utilization and environmental modification of road asphalt. The red mud-based composite catalyst is composed of surface alkaline porous red mud and transition metal oxides. By total mass, surface alkaline porous red mud accounts for 90-95%, and transition metal oxides account for 5-10%. Its nitrogen adsorption-desorption isotherm exhibits type IV characteristics and forms an H3-type hysteresis loop, possessing a slit-like mesoporous structure, which can provide sufficient adsorption sites and diffusion channels for asphalt VOCs. When applied to asphalt, the red mud-based composite catalyst can effectively improve the physical properties of asphalt, significantly inhibit various VOC components such as alkanes and ketones, greatly reduce the total VOC release, and achieve efficient degradation of asphalt VOCs. It is suitable for asphalt VOCs treatment and performance optimization of asphalt used in road engineering.
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