Fe-Mn double-metal heterogeneous Fenton catalyst taking molecular sieve as carrier as well as preparation method and application of catalyst
A heterogeneous Fenton and molecular sieve technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of non-reusable catalysts, secondary pollution of water bodies, and difficulty in recycling, etc. Applicable pH range, reduced dissolution level, and easy-to-control effects
Inactive Publication Date: 2014-12-17
TIANJIN UNIV
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The invention provides a Fe-Mn double-metal heterogeneous Fenton catalyst taking a molecular sieve as a carrier as well as a preparation method and application of the catalyst. The preparation method comprises the following steps: mixing a MnSO4.H2O solution and a FeSO4.7H2O solution to obtain a mixed system, adding a NaY molecular sieve into the mixed system, uniformly mixing, adding citric acid into the mixed system, carrying out water bath reaction, and drying and calcining viscous substance obtained after the reaction to obtain the Fe-Mn/NaY supported heterogeneous Fenton catalyst which is used for treating papermaking wastewater. The heterogeneous Fenton catalyst prepared by the method can be recycled and easily separated from the waste water; no chemical sludge is generated in the reaction system; the treatment cost is low; the technological process is simple and easy to control; the Fe-Mn double-metal heterogeneous Fenton catalyst has a relatively bright actual application prospect; the pH application range is widened; the dissolution level of iron ions can be reduced; the Fe-Mn double-metal heterogeneous Fenton catalyst can be recycled; by virtue of a synergistic effect of Fe-Mn double-metal ions, the catalytic reaction activity can be improved.
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