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首页> 外文期刊>Catalysis Communications >Novel NaY zeolite-supported nanoscale zero-valent iron as an efficient heterogeneous Fenton catalyst
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Novel NaY zeolite-supported nanoscale zero-valent iron as an efficient heterogeneous Fenton catalyst

机译：新型NaY沸石负载的纳米零价铁作为高效多相Fenton催化剂

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摘要

NaY zeolite-supported nanoscale zero-valent iron (NZVI/NaY) was synthesized by in-situ reduction of exchanged iron ions. Composition and structural characterization showed that α-Fe nanoparticles (50-100 nm) were supported on the surface of NaY zeolite. Catalytic efficiency of the composite powders was tested in degradation of potassium acid phthalate (KHP) solution (425 mg/L). At pH 3.5, the chemical oxygen demand (COD) removal ratio reached 79%. The NZVI/NaY exhibited efficient catalytic activity close to that of iron homogeneous catalyst but with less than 50% leaching of iron cations. Further, it performed well under much wider pH range (pH 1.7-5) compared to classic Fenton reagent, providing potential alternative as a novel heterogeneous Fenton catalyst for environmental remediation.
机译：通过原位还原交换的铁离子合成了NaY沸石负载的纳米零价铁（NZVI / NaY）。组成和结构表征表明，α-Fe纳米颗粒（50-100 nm）负载在NaY沸石表面。测试了复合粉末在邻苯二甲酸钾酸钾（KHP）溶液（425 mg / L）降解中的催化效率。在pH 3.5时，化学需氧量（COD）去除率达到79％。 NZVI / NaY的有效催化活性接近铁均相催化剂，但铁阳离子的浸出少于50％。此外，与经典的Fenton试剂相比，它在更宽的pH范围（pH 1.7-5）下表现良好，为作为新型多相Fenton催化剂用于环境修复提供了潜在的替代方法。

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