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The effect of CuO loading on different method prepared CeO2 catalyst for toluene oxidation
Yiqing Zeng1, Yanan Wang1, Fujiao Song2
1School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
The Science of the Total Environment
|December 7, 2019
Summary
The study investigated copper oxide (CuO) on cerium oxide (CeO2) catalysts for toluene oxidation. Catalyst performance depends on CeO2 properties and CuO-CeO2 interactions influencing oxygen vacancies and reaction rates.
Area of Science:
- Catalysis
- Materials Science
- Environmental Chemistry
Background:
- Cerium oxide (CeO2) supported copper oxide (CuO) catalysts are widely studied.
- Limited research exists on their application in volatile organic compounds (VOCs) oxidation.
Purpose of the Study:
- Investigate the impact of CuO loading on CeO2 supports for low-temperature toluene oxidation.
- Understand how CeO2 properties influence CuO dispersion and catalytic activity.
Main Methods:
- Synthesized CuO catalysts supported on three different CeO2 materials.
- Characterized catalyst properties using various techniques.
- Analyzed toluene oxidation reaction mechanisms.
Main Results:
- CeO2 shape and surface area affected CuO dispersion and Cu-CeO2 interaction.
- CuO loading altered oxygen vacancy concentration, impacting toluene adsorption.
- Toluene oxidation rate was controlled by oxygen activation on vacancies.
Conclusions:
- The promotional or inhibitory effect of CuO on CeO2 for toluene oxidation is linked to catalyst physical and chemical properties.
- Findings offer guidance for designing effective CuO-CeO2 catalysts.
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