期刊
APPLIED NANOSCIENCE
卷 11, 期 12, 页码 2861-2867出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-021-02232-5
关键词
CO oxidation; Mix metal oxides; Room temperature conversion; Nanoparticles
资金
- UGC-CSIR NET-JRF
- UGC-New Delhi
The Co-Cu-Mn mixed oxide spinel was synthesized and characterized, with the Co-Cu-10Mn catalyst showing high CO conversion rate at low temperature and good stability over 6 hours of testing.
The nano-composite metal oxides are emerging catalytic materials and can be utilized to remediate exhaust pollutants in an energy-efficient way. Thus, Co-Cu-Mn mixed oxide spinel was developed with a glycine combustion route for CO oxidation studies. The composites were characterized by XRD, TEM, N-2-sorption, CO-TPD studies for understanding the structural, particle, and surface nature of the catalysts. The formation of the solid solution was confirmed of Mn in Co-Cu oxides. Furthermore, the high surface area and porosity of Co-Cu-10Mn showed high CO chemisorption and high activity as compared to other Mn composed Co-Cu catalysts. The catalyst composed of 10% of Mn achieved 100% conversion of CO at a low temperature, i.e., 38 degrees C. The superior catalytic property of Co-Cu-10Mn is attributed to the CuO species from the solid material that has a more excellent synergistic interaction with Co and Mn. These stronger interactions were creating a vacancy site for CO at room temperature. Also, the reaction stability for 6 h was tested without any loss in the catalytic performance.
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