Research Article | | Peer-Reviewed

Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts

Received: 24 August 2024     Accepted: 11 September 2024     Published: 29 September 2024
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Abstract

During previous catalytic tests on the reducing power of NOx catalysts based on pozzolana and PN-black citric acid polymer, it was found that the use of the NO2 model molecule poses a significant health and environmental risk. Thus, a project was launched to find another, much less harmful model molecule. Hydrogen peroxide H2O2 was chosen, a molecule naturally secreted by the body to prevent pigment synthesis, with disinfectant, antiseptic and whitening properties widely used in various activities, including cosmetics. Consequently, catalytic tests of NOx-reducing power using hydrogen peroxide H2O2 as a model molecule were carried out on two catalysts based on pozzolana and PN-black polymer of citric acid, PNP-Fe-water-15% and PNP-Fe-ethanol-15%, differing in the solvent used during their syntheses according to a procedure detailed in the bibliography and this manuscript. Pozzolana is a volcanic rock widespread in the volcanic mountains in the Vakinankaratra region of Madagascar. Its use as a support for catalysts based on PN-black polymer of citric acid and Iron-Fe enabled us to synthesize various catalysts, the characteristics and synthesis methods of which are detailed in this manuscript. In short, the catalytic test with hydrogen peroxide was conclusive, enabling a pragmatic comparison of the two catalysts tested, with the result that the catalyst synthesized with water PNP-Fe-water-15% is more active than the catalyst synthesized with ethanol PNP-Fe-ethanol-15%. This is due to the quality and difference in dispersion of the PN-black polymer molecules depending on the solvent used, which can have an impact on the nature of the catalyst surfaces and certain characteristics such as porosity. This dispersion is confirmed and viewed using an optical microscope to visualize the surface of a catalyst grain. Kinetic results from two proposed mechanisms for the reduction of H2O2 hydrogen peroxide molecules using PNP-Fe catalysts also confirmed not only the proposed mechanisms, but also the higher activity of PNP-Fe catalysts synthesized with water, whose kinetic constants are much higher than those synthesized with ethanol.

Published in American Journal of Polymer Science and Technology (Volume 10, Issue 3)
DOI 10.11648/j.ajpst.20241003.13
Page(s) 67-82
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Pozzolana, PN-Black Polymer Citric Acid, PNP-Fe Catalyst, Catalytic Test, Porosity, Dispersion, Optical Microscope, Mechanism

References
[1] Karim, M. A. (Promotion 2007). Contribution à l'étude de valorisation de la pouzzolane - Quelques applications. Mémoire de fin d'étude - Ecole Supérieure Polytechnique d'Antananarivo.
[2] Randriamalala, A. P. (2022). SYNTHESE ET TEST CATALYTIQUE Du CATALYSEUR HETEROGENE REGENERABLE REDUCTEUR DU GAZ NOX A BASE DU FER DU POZZOLANA NATUREL ET DU PN-POLYMERE NOIR D'ACIDE CITRIQUE. Mémoire en vue d'obtention du diplôme de Master titre Ingénieur en Génie des Procédés Chimiques et Industriels.
[3] Rabeharitsara, A. T., Randriamalala, A. P., Randriana, N. R., Robijaona, B., & Ratsimba, M. H. (2022). Valorization of the Pn-Pozzolana to the Synthesis of Fe-pn-Pozzolana Study - Application to the Synthesis of the Fe-Pn-SiO2. American Journal of Polymer Science and Technology Volume 8, Issue 2, 28-37
[4] Rabeharitsara, A. T., Rovatahianjanahary, B., & Randriana, N. R. (2018). Pine Wood Powder Treatment to BXH+ Homogeneous Catalyst (H+/H2SO4) Supported on Its Aromatics’ and PNA’ Alkenes – Application in Black Citric Acid Polymer Synthesis. American Journal of Polymer Science and Technology Volume 4, Issue 1, March 2018, 1-27
[5] Guisnet, M., Laforge, S., & Couton, D. (s. d.). Réactions et réacteurs chimiques - Cours et exercices corrigés. Technosup - Les filières technologiques des enseignements supérieurs.
[6] Rabeharitsara, A. T., & Rabearimihaja, P. N. (June 2016). Betacarotene dosage by hydrofluoric acid solution and validation of this new process by SPC. American Journal of applied Chemistry, Volume 4, Issue 2, April 2016 Page(s) 64-70
[7] SAUER, H., & SURREL, J. (s. d.). Principe et Utilisations de base du microscope. Ressources numériques Optique pour l'instrumentation.
[8] Etude cinétique de la décomposition de l'eau oxygénée. (2021, 05 31). Récupéré sur:
[9] C., H., & J. C., L. (2016 - 2017). Sciences sur mesure - Décomposition de l'eau oxygénée, Université de Liège. Récupéré sur:
Cite This Article
  • APA Style

    Tahina, R. A., Mandimbimiarana, N. I. T., Baholy, R., Hanitriniaina, H. R. M., Fortuné, R. N. R., et al. (2024). Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts. American Journal of Polymer Science and Technology, 10(3), 67-82. https://doi.org/10.11648/j.ajpst.20241003.13

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    ACS Style

    Tahina, R. A.; Mandimbimiarana, N. I. T.; Baholy, R.; Hanitriniaina, H. R. M.; Fortuné, R. N. R., et al. Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts. Am. J. Polym. Sci. Technol. 2024, 10(3), 67-82. doi: 10.11648/j.ajpst.20241003.13

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    AMA Style

    Tahina RA, Mandimbimiarana NIT, Baholy R, Hanitriniaina HRM, Fortuné RNR, et al. Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts. Am J Polym Sci Technol. 2024;10(3):67-82. doi: 10.11648/j.ajpst.20241003.13

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  • @article{10.11648/j.ajpst.20241003.13,
      author = {Rabeharitsara Andry Tahina and Ny Itokiana Tsihoarana Mandimbimiarana and Raobijaona Baholy and Hdr Ratsimba Marie Hanitriniaina and Randriana Nambinina Richard Fortuné and Rakotomamonjy Pierre},
      title = {Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts
    },
      journal = {American Journal of Polymer Science and Technology},
      volume = {10},
      number = {3},
      pages = {67-82},
      doi = {10.11648/j.ajpst.20241003.13},
      url = {https://doi.org/10.11648/j.ajpst.20241003.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpst.20241003.13},
      abstract = {During previous catalytic tests on the reducing power of NOx catalysts based on pozzolana and PN-black citric acid polymer, it was found that the use of the NO2 model molecule poses a significant health and environmental risk. Thus, a project was launched to find another, much less harmful model molecule. Hydrogen peroxide H2O2 was chosen, a molecule naturally secreted by the body to prevent pigment synthesis, with disinfectant, antiseptic and whitening properties widely used in various activities, including cosmetics. Consequently, catalytic tests of NOx-reducing power using hydrogen peroxide H2O2 as a model molecule were carried out on two catalysts based on pozzolana and PN-black polymer of citric acid, PNP-Fe-water-15% and PNP-Fe-ethanol-15%, differing in the solvent used during their syntheses according to a procedure detailed in the bibliography and this manuscript. Pozzolana is a volcanic rock widespread in the volcanic mountains in the Vakinankaratra region of Madagascar. Its use as a support for catalysts based on PN-black polymer of citric acid and Iron-Fe enabled us to synthesize various catalysts, the characteristics and synthesis methods of which are detailed in this manuscript. In short, the catalytic test with hydrogen peroxide was conclusive, enabling a pragmatic comparison of the two catalysts tested, with the result that the catalyst synthesized with water PNP-Fe-water-15% is more active than the catalyst synthesized with ethanol PNP-Fe-ethanol-15%. This is due to the quality and difference in dispersion of the PN-black polymer molecules depending on the solvent used, which can have an impact on the nature of the catalyst surfaces and certain characteristics such as porosity. This dispersion is confirmed and viewed using an optical microscope to visualize the surface of a catalyst grain. Kinetic results from two proposed mechanisms for the reduction of H2O2 hydrogen peroxide molecules using PNP-Fe catalysts also confirmed not only the proposed mechanisms, but also the higher activity of PNP-Fe catalysts synthesized with water, whose kinetic constants are much higher than those synthesized with ethanol.
    },
     year = {2024}
    }
    

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  • TY  - JOUR
    T1  - Study of the Use of Oxygenated Water as a Non-Toxic Molecule Model for Catalytic Testing of Pozzolana-PN and Iron-Based NOx Reducing Catalysts
    
    AU  - Rabeharitsara Andry Tahina
    AU  - Ny Itokiana Tsihoarana Mandimbimiarana
    AU  - Raobijaona Baholy
    AU  - Hdr Ratsimba Marie Hanitriniaina
    AU  - Randriana Nambinina Richard Fortuné
    AU  - Rakotomamonjy Pierre
    Y1  - 2024/09/29
    PY  - 2024
    N1  - https://doi.org/10.11648/j.ajpst.20241003.13
    DO  - 10.11648/j.ajpst.20241003.13
    T2  - American Journal of Polymer Science and Technology
    JF  - American Journal of Polymer Science and Technology
    JO  - American Journal of Polymer Science and Technology
    SP  - 67
    EP  - 82
    PB  - Science Publishing Group
    SN  - 2575-5986
    UR  - https://doi.org/10.11648/j.ajpst.20241003.13
    AB  - During previous catalytic tests on the reducing power of NOx catalysts based on pozzolana and PN-black citric acid polymer, it was found that the use of the NO2 model molecule poses a significant health and environmental risk. Thus, a project was launched to find another, much less harmful model molecule. Hydrogen peroxide H2O2 was chosen, a molecule naturally secreted by the body to prevent pigment synthesis, with disinfectant, antiseptic and whitening properties widely used in various activities, including cosmetics. Consequently, catalytic tests of NOx-reducing power using hydrogen peroxide H2O2 as a model molecule were carried out on two catalysts based on pozzolana and PN-black polymer of citric acid, PNP-Fe-water-15% and PNP-Fe-ethanol-15%, differing in the solvent used during their syntheses according to a procedure detailed in the bibliography and this manuscript. Pozzolana is a volcanic rock widespread in the volcanic mountains in the Vakinankaratra region of Madagascar. Its use as a support for catalysts based on PN-black polymer of citric acid and Iron-Fe enabled us to synthesize various catalysts, the characteristics and synthesis methods of which are detailed in this manuscript. In short, the catalytic test with hydrogen peroxide was conclusive, enabling a pragmatic comparison of the two catalysts tested, with the result that the catalyst synthesized with water PNP-Fe-water-15% is more active than the catalyst synthesized with ethanol PNP-Fe-ethanol-15%. This is due to the quality and difference in dispersion of the PN-black polymer molecules depending on the solvent used, which can have an impact on the nature of the catalyst surfaces and certain characteristics such as porosity. This dispersion is confirmed and viewed using an optical microscope to visualize the surface of a catalyst grain. Kinetic results from two proposed mechanisms for the reduction of H2O2 hydrogen peroxide molecules using PNP-Fe catalysts also confirmed not only the proposed mechanisms, but also the higher activity of PNP-Fe catalysts synthesized with water, whose kinetic constants are much higher than those synthesized with ethanol.
    
    VL  - 10
    IS  - 3
    ER  - 

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Author Information
  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

  • Génie des Procédés Chimiques et Industriels (GPCI), Ecole Supérieure Polytechnique Antananarivo (ESPA), University of Antananarivo, Antananarivo, Madagascar

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