Molecular sieves have gained increasing attention in VOCs control due to their unique pore structures, high adsorption selectivity, and regenerability, particularly in industrial exhaust treatment. As crystalline aluminosilicates with uniform micropores, their pore size can be precisely tuned by adjusting the Si/Al ratio and cation types, enabling selective adsorption of VOC molecules of different sizes. This allows for efficient separation of target pollutants in complex gas streams while minimizing interference from other components.
In diesel vehicle exhaust treatment, molecular sieve-supported catalysts containing vanadium, tungsten, or molybdenum are widely used in selective catalytic reduction (SCR) systems. These catalysts leverage the high surface area and active site dispersion of molecular sieves to convert nitrogen oxides (NOx) effectively, even at low temperatures. In automotive exhaust purification systems, molecular sieves serve as catalyst carriers, where their acidity promotes oxidation reactions, converting carbon monoxide (CO) and unburned hydrocarbons (HC) into harmless CO₂ and H₂O.
In the chemical and petroleum refining industries, JOOZEO molecular sieves exhibit multifunctional pollution control capabilities. Their hydrophobic variants (such as hydrophobic Y-type sieves) preferentially adsorb organic components, making them highly effective in removing non-polar VOCs like benzene and xylene from high-humidity exhaust streams. For sulfur-containing emissions, molecular sieves exchanged with transition metals can catalyze the oxidation of H₂S and adsorb SOx simultaneously, facilitating the recovery and reuse of sulfur resources.
Post time: Jul-21-2025