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  1. Article ; Online: Exploring the impact of competitive compounds and catalyst synthesis method in DBT oxidative desulfurization using MoO

    Hosseini, Alireza / Alavi, Seyed Mehdi / Bazyari, Amin / Valaei, Akbar

    Environmental science and pollution research international

    2023  Volume 31, Issue 4, Page(s) 6332–6349

    Abstract: This research endeavors to address the pressing challenge of reducing sulfur content in fuels, an environmental imperative. It does so by employing bimetallic catalysts to enhance the efficiency of oxidative desulfurization (ODS) processes. This involves ...

    Abstract This research endeavors to address the pressing challenge of reducing sulfur content in fuels, an environmental imperative. It does so by employing bimetallic catalysts to enhance the efficiency of oxidative desulfurization (ODS) processes. This involves utilizing successive impregnation and co-impregnation methods to prepare a MoO
    MeSH term(s) Hydrogen Peroxide ; Oxidation-Reduction ; Temperature ; Nitrogen Compounds ; Oxidative Stress ; Sulfur/chemistry
    Chemical Substances Hydrogen Peroxide (BBX060AN9V) ; Nitrogen Compounds ; Sulfur (70FD1KFU70)
    Language English
    Publishing date 2023-12-26
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-023-31580-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: The effects of cobalt and cerium promoters on hydrogen production performance of alumina‐supported nickel catalysts in propane steam reforming

    Azizzadeh Fard, Amir / Bazyari, Amin / Alavi, Seyed Mehdi / Aghamiri, Ali Reza

    Journal of chemical technology and biotechnology. 2020 Dec., v. 95, no. 12

    2020  

    Abstract: BACKGROUND: The effects of Co and Ce promoters on the performance of Ni (10 wt%)–Co (0.0, 2.75, 5.5 wt%)/Ce (0.0, 5.0, 10.0 wt%)–Al₂O₃ catalysts have been studied for steam reforming of C₃H₈ (SRP). In this work, Ni (NO₃)₂ and Co (NO₃)₂ are co‐impregnated ...

    Abstract BACKGROUND: The effects of Co and Ce promoters on the performance of Ni (10 wt%)–Co (0.0, 2.75, 5.5 wt%)/Ce (0.0, 5.0, 10.0 wt%)–Al₂O₃ catalysts have been studied for steam reforming of C₃H₈ (SRP). In this work, Ni (NO₃)₂ and Co (NO₃)₂ are co‐impregnated on the co‐precipitated Al₂O₃–CeO₂ supports. X‐ray diffraction, N₂ adsorption–desorption, H₂‐temperature‐programmed reduction, high‐resolution transmission electron microscopy, scanning electron microscopy and thermogravimetric/differential thermal analysis were accomplished to explain the SRP activity of the catalysts. The performance of the resulting catalysts was evaluated under the gas hourly space velocity (GHSV) = 45 000 mL h‐¹ gcₐₜ⁻¹, T = 600 °C, steam/C₃H₈ ratio (S/C) = 3 and P = 1 atm. RESULTS: The experimental findings revealed that Ce and Co promoters markedly improved the catalyst activity, stability and H₂ yield of Ni/Al₂O₃ catalyst. The sample with 2.75 wt% Co and 10.0 wt% Ce showed highest C₃H₈ conversion, while maximum yield of H₂ was obtained for catalyst containing 5.5 wt% Co and 5.0 wt% Ce. CONCLUSION: Higher loadings of Co decreased C₃H₈ conversion and catalyst stability due to more coke formation on the catalyst surface, whereas Ce significantly improved catalyst resistance to coke deposition due to the enhanced Ni metal particles distribution over the support. © 2020 Society of Chemical Industry
    Keywords X-ray diffraction ; biotechnology ; catalysts ; catalytic activity ; cerium ; cobalt ; coprecipitation ; differential thermal analysis ; hydrogen production ; nickel ; particles ; propane ; scanning electron microscopy ; steam ; thermogravimetry ; transmission electron microscopy ; velocity
    Language English
    Dates of publication 2020-12
    Size p. 3241-3251.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article
    Note NAL-light ; JOURNAL ARTICLE
    ZDB-ID 1479465-2
    ISSN 1097-4660 ; 0268-2575
    ISSN (online) 1097-4660
    ISSN 0268-2575
    DOI 10.1002/jctb.6503
    Database NAL-Catalogue (AGRICOLA)

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