Showing 261 - 280 results of 1,089 for search '"catalyst"', query time: 0.07s Refine Results
  1. 261

    An Efficient and Recycling Catalyst for the One-Pot Three-Component Synthesis of Substituted 3,4-Dihydropyrimidin-2(1H)-ones by Taoues Boumoud, Boudjemaa Boumoud, Salah Rhouati, Ali Belfaitah, Abdelmadjid Debache, Paul Mosset

    Published 2008-01-01
    “…The Biginelli one-pot three-component cyclocondensation was applied in this work to prepare 3,4-dihydropyrimidinone and its analogues using the first derivative of lead, Pb(NO3)2, as a recycling catalyst, from a diversity of aromatic aldehydes, β-ketoesters and urea. …”
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  2. 262
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    Highly Active Low Cobalt Content-Based Bulk MoS2 Hydrodesulfurization Catalysts with a Unique Impact of H2S by Hamdy Farag, Abd-Alrahman Embaby, Masahiro Kishida, Abdel-Nasser A. El-Hendawy, Mohamed Mahmoud Nasef

    Published 2018-01-01
    “…A series of unsupported MoS2, Co9S8, and Co-promoted MoS2 catalysts have been synthesized by tuned impregnation and successive thermal annealing methods using a continuous flow of a mixture of H2 and H2S gases. …”
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  4. 264

    Kinetic Study of Zirconia-Alumina-Supported Ni-Fe Catalyst for Dry Reforming of Methane: Impact of Partial Pressure and Reaction Temperature by Ahmed Al-Fatesh, Kenit Acharya, Ahmed I. Osman, Ghzzai Almutairi, Anis Hamza Fakeeha, Ahmed Elhag Abasaeed, Yousef A. Al-Baqmaa, Rawesh Kumar

    Published 2023-01-01
    “…Herein, we prepared a zirconia-alumina-supported Ni-Fe catalyst and used it for DRM. Different partial pressures and temperatures are used to test the dry reforming of methane reaction as a detailed kinetic study. …”
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    Article
  5. 265

    Influence of Synthesis pH on Textural Properties of Carbon Xerogels as Supports for Pt/CXs Catalysts for Direct Methanol Fuel Cells by C. Alegre, M. E. Gálvez, D. Sebastián, R. Moliner, M. J. Lázaro

    Published 2012-01-01
    “…Catalysts were also synthesized over a commercial carbon black (Vulcan-XC-72R) for comparison purposes. …”
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  6. 266

    Microwave-intensified esterification of high-free fatty acid feedstock into biodiesel using waste chicken eggshells as a heterogeneous catalyst by Juliati Br Tarigan, Anzelina F. Barus, Nabilah T. Simamora, Ribka S. Tarigan, Sabarmin Perangin-angin, Junedi Ginting, Eko K. Sitepu, Y.H. Taufiq-Yap

    Published 2025-06-01
    “…The efficacy of waste chicken eggshells as a heterogeneous catalyst is investigated for biodiesel production from high-free fatty acid feedstock under microwave irradiation. …”
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  7. 267

    Ru-Sn-B/Al2O3 Catalysts for Selective Hydrogenation of Methyl Oleate: Influence of the Ru/Sn Ratio by María A. Sánchez, Vanina A. Mazzieri, María A. Vicerich, Carlos R. Vera, Carlos L. Pieck

    Published 2015-01-01
    “…This study focuses on the influence of the Ru/Sn ratio on the catalytic hydrogenation of methyl oleate to oleyl alcohol using Ru-Sn-B catalysts, notably on the catalytic activity and selectivity. …”
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  8. 268

    Green synthesis of magnetic type Zeolites 4A as catalyst for the elimination of quinoline yellow by the Fenton process: Optimization and kinetic investigation by Roland Urselin Noumsi Foko, Cyrille Ghislain Fotsop, Donald Raoul Tchuifon Tchuifon, Charles Banenzoué, Anatole Guy Blaise Azebaze

    Published 2025-06-01
    “…A significant quadratic regression model R2 = 91.35 % and the adjusted coefficient of determination value (adjusted R2 = 82.04 %) were observed using the analysis of the variance. The study of catalyst recovery and reusability shows that the catalysts remain stable with a degradation rate greater than 66 % after five cycles. …”
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  15. 275

    Synthesis of MIL-53(Fe) Metal-Organic Framework Material and Its Application as a Catalyst for Fenton-Type Oxidation of Organic Pollutants by Pham Dinh Du, Pham Ngoc Hoai

    Published 2021-01-01
    “…The obtained MIL-53(Fe) could serve as a potential heterogeneous catalyst to oxidize phenol (PhN), rhodamine B (RhB), and methylene blue (MtB) in the Fenton-like reaction system at the different solution pHs.…”
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  16. 276

    Flexible Dual Fe-based Catalyst: MIL-53(Fe) Loaded with Deep Eutectic Solvent for Discontinuous Selective Oxidation of H2S by Fengke Wang, Chaofan Li, Weizhen Kong, Shucan Qin, Qianqian Peng, Lihua Zang, Yunqian Ma, Yi Nie, Guihuan Yan

    Published 2024-01-01
    “…Both elemental sulfur and DES can induce the flexible deformation of MOF as the guest molecule to relieve the passivation of catalyst.…”
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    l-Histidine-functionalized KIT-6 with embedded palladium nanoparticles as an efficient heterogeneous catalyst for oxidation of sulfide to sulfoxide and amination of aryl halides by Nafis Ahmad, Prakash Kanjariya, G. Padma Priya, Anjan Kumar, Rishabh Thakur, R. S. K. Sharma, Mukesh Kumari, Sharnjeet Kaur, Abhinav Kumar, Munther Kadheem

    Published 2025-01-01
    “…This approach offers multiple benefits, including the use of readily available and cost-effective materials, a straightforward procedure, short reaction durations, high yields, and a catalyst that is easy to separate and reuse. Additionally, the catalyst can be recovered and reused multiple times without significant palladium loss or alteration in its activity.…”
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