Catalytic ozonation of Orange II (100 mg/L) was studied using aluminosilicate Montanit300® (M) modified with H₂SO₄ (MS) and HCl (MH). Characterization of these samples was performed through several techniques: SEM/EDX, FTIR, XRD, FRX, TPD pyridine, surface area, pH_PZC. Acid treatment increased surface area, Si:Al ratio and quantity of acid sites, but reduced pH_PZC and Fe and Mn content.

Ozonation experiments achieved complete decoloration and remarkable TOC conversions of 66, 65, 88 and 91 % by single ozonation and catalytic ozonation with MH, MS and M, respectively. Higher M and MS activity under acidic pH was attributed to Mn leaching. Decreased mineralization efficiency in the presence of tert-butanol suggested a radical mechanism. At neutral pH, M showed no activity, while MS presented mild activity owing to its enlarged hydrophobicity.

The M sample sustained mineralization levels over 20 h. Lower O₃ dose caused quick MS deactivation. However, it was reversed through calcination and prevented with a higher oxidant dose.

Mn is naturally found in Montanit300®, thus making it an inexpensive catalyst. The development of a dynamic cycle combining reduced and oxidized forms of Mn was key to the outstanding activity observed.

使用经H ₂ SO ₄（MS）和HCl（MH）改性的铝硅酸盐Montanit300®（M），研究了Orange II（100 mg / L）的催化臭氧化作用。这些样品的表征通过几种技术进行：SEM / EDX，FTIR，XRD，FRX，TPD吡啶，表面积，pH _PZC。酸处理增加了表面积，Si：Al比和酸位的数量，但降低了pH _PZC以及Fe和Mn的含量。

臭氧化实验通过分别用MH，MS和M进行一次臭氧化和催化臭氧化分别实现了完全脱色和66％，65％，88％和91％的显着TOC转化率。酸性pH下较高的M和MS活性归因于Mn的浸出。在叔丁醇存在下矿化效率降低表明存在根本机理。在中性pH值下，M无活性，而MS由于疏水性增强，具有中等活性。

M样品在20小时内持续矿化水平。较低的O ₃剂量会导致MS快速失活。然而，通过煅烧可以逆转，并通过较高的氧化剂剂量来防止。

Mn天然存在于Montanit300®中，因此使其成为廉价的催化剂。结合还原形式和氧化形式的Mn形成的动态循环是观察到的出色活性的关键。