The challenge of industrial NOx emissions is significant, demanding innovative and effective catalytic solutions. At NINGBO INNO PHARMCHEM CO.,LTD., we are pushing the boundaries of catalysis by harnessing the potential of underutilized resources, specifically rare earth tailings, to develop advanced SCR catalysts. Our goal is to maximize NOx removal efficiency while promoting sustainable industrial practices.

Rare earth tailings, a byproduct of mining operations, are often rich in metal oxides that, with proper modification, can exhibit potent catalytic properties. Our research has focused on a unique alkali and acid co-treatment process that unlocks the latent catalytic potential of these materials. This meticulous treatment enhances the structural and chemical properties of the tailings, transforming them into a superior catalyst for the Selective Catalytic Reduction (SCR) of NOx.

The key to achieving high SCR NOx reduction efficiency lies in the catalyst's ability to facilitate the chemical reaction that converts NOx into nitrogen gas and water. Our modified tailings catalyst excels in this regard due to several factors. Firstly, the treatment process increases the surface area and porosity, creating more active sites for NOx and ammonia to interact. Secondly, it concentrates and activates key catalytic components like iron and cerium oxides. Analytical data, including XRD and XPS, confirm the presence of active Fe and Ce species in beneficial oxidation states, which are crucial for the redox cycles involved in SCR.

The enhanced redox capacity, as evidenced by H2-TPR analysis, means the catalyst can more readily participate in the electron transfer processes required for NOx reduction. This leads to higher conversion rates, particularly in demanding high-temperature industrial environments where traditional catalysts might degrade or lose efficiency. Our catalyst has shown excellent performance, achieving up to 96.2% NOx conversion at 900°C, a significant achievement for a material derived from waste.

The application of this technology represents a significant step forward in both environmental protection and resource management. By utilizing rare earth tailings, we offer an economically attractive alternative to conventional catalysts. This not only lowers operational costs for industries but also provides a tangible solution to the environmental challenge of mining waste disposal. NINGBO INNO PHARMCHEM CO.,LTD. is committed to driving this innovation forward, providing industries with advanced tools for maximized NOx removal and a cleaner industrial footprint.