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Catalytic Soot Oxidation Using Ceria, Cobalt And Copper Nanocomposites

Published online by Cambridge University Press:  13 March 2018

EUBERT P. MAHOFA,
TUMMA BALA NARSAIAH and
CHIDURALA SHILPA CHAKRA
EUBERT P. MAHOFA*
Affiliation:
Department of Chemical and Process Systems Engineering, School of Engineering and Technology, Harare Institute of Technology, Harare, Zimbabwe
TUMMA BALA NARSAIAH
Affiliation:
Department of Chemical Engineering, College of Engineering, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh515001, India
CHIDURALA SHILPA CHAKRA
Affiliation:
Centre of Nano Sciences and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad500085, India
*
*Corresponding author: Eubert Privilege Mahofa eubertmahofa@gmail.com
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Abstract

Nanosized CeO2-CuO (CeCu, 2:1) and CeO2-CoO (CeCo, 2:1) were synthesized by co-precipitation from nitrate precursors using 25% ammonia solution (NH4OH) as the precipitating agent. The catalysts were calcined in air at 800°C for 4h to evaluate the thermal stability. Powder x-ray diffraction (XRD) and Dynamic Light Scattering (DLS) techniques were used for catalyst characterization. A Thermo Gravimetric/Differential Thermal Analyzer (TG/DTA) was used to determine the catalytic efficiency and soot oxidation activity. Ce-composite nanoparticles heightens the redox properties of the catalyst relative to undoped ceria. The Ce-composite samples exhibited excellent soot catalytic combustion performance by decreasing activation energy of soot oxidation.

Keywords

catalyticCeCoCunanoscale

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Type
Articles
Information
MRS Advances , Volume 3 , Issue 42-43: African Materials Research Society 2017 , 2018, pp. 2581 - 2588
Copyright
Copyright © Materials Research Society 2018 

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