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CC BY 4.0 · Sustainability & Circularity NOW
DOI: 10.1055/a-2791-3831
Original Article

Complete oxidation of CO, propene, and toluene as model components of diesel engine exhaust and VOC using ceria-modified Cu/Hydroxyapatite: Effect of preparation methods and Ce concentration

Authors

  • Rahul More

    1   Chemistry, Institute of Chemical Technology, Mumbai, India (Ringgold ID: RIN80493)

  • Kajal Pawar

    1   Chemistry, Institute of Chemical Technology, Mumbai, India (Ringgold ID: RIN80493)

  • Rushikesh Pagare

    1   Chemistry, Institute of Chemical Technology, Mumbai, India (Ringgold ID: RIN80493)

  • Pavan More 

    1   Chemistry, Institute of Chemical Technology, Mumbai, India (Ringgold ID: RIN80493)

Supported by: Dr. Babasaheb Ambedkar Research and Training Institute (BARTI/Fellowship/BANRF-2021/2135 & 21/06/2023
Supported by: Science and Engineering Research Board EEQ/2016/000264
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The Ce-modified Cu/HAp catalyst was prepared by successive deposition and co-precipitation methods and investigated for propene oxidation as a model component of diesel engine exhaust and VOC. The Cu0.4/Ce0.1/HAp catalyst prepared by successive deposition showed better performance than the Cu0.4-Ce0.1/HAp catalyst prepared by the coprecipitation method. Furthermore, Ce concentration has been optimized using successive deposition methods. The catalyst was modified with 0.4 mol Cu and 0.1 mol Ce deposited on HAp and tested for CO, propene, and toluene oxidation. All catalysts were characterized by P-XRD, BET, Raman, XPS, ATR-FTIR, H2-TPR, FESEM, and HR-TEM techniques. The formation of facile CuOx species with more Ce3+ and adsorbed oxygen was observed in the Cu0.4/Ce0.1/HAp catalyst. These species are responsible for the oxidation of propene at lower temperatures compared to the remaining catalyst.



Publication History

Received: 05 November 2025

Accepted after revision: 16 January 2026

Accepted Manuscript online:
16 January 2026

© . The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

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Bibliographical Record
Rahul More, Kajal Pawar, Rushikesh Pagare, Pavan More. Complete oxidation of CO, propene, and toluene as model components of diesel engine exhaust and VOC using ceria-modified Cu/Hydroxyapatite: Effect of preparation methods and Ce concentration. Sustainability & Circularity NOW ; 0: a27913831.
DOI: 10.1055/a-2791-3831