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Updated: Oct 10, 2025

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
Mercury/oxygen reaction mechanism over CuFe2O4 catalyst
Yingju Yang1, Jing Liu1, Junyan Ding1
1State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Copper iron oxide (CuFe2O4) effectively catalyzes mercury oxidation in flue gas. Its inverse spinel structure and specific lattice oxygen sites enhance oxygen activation, with chemisorbed oxygen being more reactive in the rate-determining Hg(ads) → HgO(ads) step.
Area of Science:
- Catalysis
- Environmental Chemistry
- Materials Science
Background:
- Elemental mercury (Hg0) oxidation is crucial for industrial flue gas treatment.
- Copper ferrite (CuFe2O4) is a potential catalyst, but its reaction mechanism is unclear.
Purpose of the Study:
- To elucidate the oxygen-assisted mercury oxidation mechanism on CuFe2O4.
- To identify key factors influencing catalytic activity and reaction pathways.
Main Methods:
- Experimental studies combined with quantum chemistry calculations.
- Analysis of lattice oxygen reactivity and oxygen molecule activation.
Main Results:
- CuFe2O4 exhibits optimal catalytic activity at 150 °C.
- Specific lattice oxygen environments and the inverse spinel structure (Jahn-Teller effect) enhance O2 activation.
- Chemisorbed oxygen is more reactive than lattice oxygen, with Hg(ads) → HgO(ads) as the rate-determining step (barrier: 116.94 kJ/mol).
Conclusions:
- The study reveals the detailed mechanism of mercury oxidation on CuFe2O4.
- Understanding these mechanisms provides theoretical guidance for designing advanced mercury oxidation catalysts.
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