Journal
CATALYSIS COMMUNICATIONS
Volume 11, Issue 11, Pages 937-941Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2010.04.004
Keywords
Supported nano zero-valent iron; NaY zeolite; Heterogeneous catalysts; Fenton reaction
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Funding
- National Natural Science Foundation of China [20676121]
- Natural Science Foundation of Tianjin [09JCYBJC08000]
- National Water Project [2008ZX07526-002, 2008ZX07314-001]
- NCET [08-0296]
- SRF for ROCS, SEM [2009-1001]
- Opening Foundation of Applied Chemistry Discipline, Zhejiang University of Technology [56310101630]
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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 alpha-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. (C) 2010 Elsevier B.V. All rights reserved.
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