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Remove cooking fume using catalytic combustion over Pt/La-Al2O3
Jian-li Wang1, Jun-bo Zhong, Mao-chu Gong
1College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China.
Journal of Environmental Sciences (China)
|November 1, 2007
Summary
Lanthanum-aluminum oxide (La-Al2O3) enhances the performance of low noble metal catalysts for cooking fume abatement. The platinum on La-Al2O3 catalyst demonstrated superior activity and efficiency.
Area of Science:
- Catalysis
- Environmental Science
- Materials Science
Background:
- Cooking fumes pose environmental and health risks.
- Effective catalytic converters are needed for fume abatement.
- Noble metal catalysts are effective but costly.
Purpose of the Study:
- To develop low noble metal content monolithic catalysts for cooking fume oxidation.
- To evaluate the effect of La-Al2O3 as a support material on catalyst activity.
- To identify the most active catalyst formulation for efficient fume treatment.
Main Methods:
- Preparation of five monolithic catalysts using the immerge method, including Pt/gamma-Al2O3, Pt/La-Al2O3, Pt/YSZ-Al2O3, Pt+Pd/La-Al2O3, and Pd/La-Al2O3.
- Activity measurements in a fixed-bed flow reactor.
- Characterization using X-ray Diffraction (XRD) and Temperature Programmed Reduction (TPR).
Main Results:
- La-Al2O3 support significantly promoted catalyst activity and lowered the complete conversion temperature of cooking fume.
- The Pt/La-Al2O3 catalyst exhibited the highest activity.
- The Pt/La-Al2O3 catalyst demonstrated applicability across a wide range of gas hourly space velocity (GHSV).
Conclusions:
- La-Al2O3 is a promising support material for low noble metal catalysts in cooking fume abatement.
- The Pt/La-Al2O3 catalyst shows great potential for practical application due to its high activity and stability.
- Further research into catalyst characterization can elucidate structure-activity relationships.
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