Pt and Co3O4 supported on ceria and zirconia for the catalytic reduction of N2O in the presence of CO

Document identifier: oai:DiVA.org:ltu-76481
Access full text here:10.1016/j.solidstatesciences.2019.106035
Keyword: Natural Sciences, Chemical Sciences, Physical Chemistry, Naturvetenskap, Kemi, Fysikalisk kemi, Ceria, N2O reduction, Nanocatalysts, H2-pulse chemisorption, Active surface area, Chemistry of Interfaces, Gränsytors kemi
Publication year: 2019
Abstract:

Ceria (CeO2) and zirconia (ZrO2) supported Pt and Co3O4-based nanocatalysts were synthesized and characterized by different instrumental techniques. The catalysts redox properties and active surface areas were evaluated using temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO) and H2-pulse chemisorption, respectively. The catalysts were tested for the thermal oxidation of carbon monoxide (CO), reduction of nitrous oxide (N2O) and conversion of N2O/CO mixture (1:1 vol%) . In catalytic tests, Pt–Co3O4/CeO2 (10:10%) oxidized CO up to 100% at 25 °C and Co3O4/CeO2 (20%) reduced N2O up to 90% at 320 °C. Moreover, Pt–Co3O4/CeO2 (10:10%) converted N2O/CO mixture to N2/CO2 up to 90% at about 210 °C. The low-temperature catalytic activity of Pt–Co3O4/CeO2 (10:10%) for CO oxidation and N2O/CO mixture redox conversion were attributed to uniform particle size, metals and support proper combination and electron interaction.

Authors

Zakir Zaman Khan

Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Inayat Ali Khan

Luleå tekniska universitet; Kemiteknik; Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Ishtiaq Khan

Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Muhammad Hamid Sarwar Wattoo

Ishfaq Ahmad Research Laboratories Complex, R-Block, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
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Amin Badshah

Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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