Showing 461 - 480 results of 1,089 for search '"catalyst"', query time: 0.05s Refine Results
  1. 461

    An experimental investigation into malachite green degradation using highly active NiFe2O4/Bi4O5I2 photocatalyst under visible light by Woon Xuet-Wei, Lam Sze-Mun, Mohamed Abdul Rahman, Zeng Honghu

    Published 2025-01-01
    “…This work introduces a novel direction for designing efficient catalysts for the treatment of water pollution using visible light.…”
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    Article
  2. 462

    Organocatalytic Packed-Bed Reactors for the Enantioselective Flow Synthesis of Quaternary Isotetronic Acids by Direct Aldol Reactions of Pyruvates by Lorenzo Poletti, Carmela De Risi, Daniele Ragno, Graziano Di Carmine, Riccardo Tassoni, Alessandro Massi, Paolo Dambruoso

    Published 2025-01-01
    “…The transition from homogeneous to heterogeneous flow conditions is also investigated, detailing the fabrication and operation of packed-bed reactors filled with a silica-supported version of the pyrrolidine-tetrazole catalyst (SBA-15 as the matrix).…”
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  3. 463

    Study on Low-Temperature Catalytic Dehydrogenation Reaction of Tail Chlorine by Pd/Al2O3 by Hanhan Wang, Tingting Lu, Yuna Li, Bo Wu, Jianwei Xue, Fuxiang Li, Zhiping Lv

    Published 2016-01-01
    “…The catalytic dehydrogenation reaction of tail chlorine by Pd was studied using a fixed-bed reactor at low temperature from 30 to 100°C. Different catalyst supports such as SiO2 and Al2O3 were applied to prepare Pd catalysts by the incipient-wetness impregnation method. …”
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  4. 464

    Efficient Removing of Pharmaceutical Contaminants of Commercial Carbamazepine by Natural Pyrite-Induced Fenton Reaction in a Wide pH Range by Tingting Shi, Jianjun Xi, Yidan Shao, Qiao Tong, Xi Zou, Hongping Zhou, Shourong Liu, Xiaoya Gao

    Published 2024-01-01
    “…Herein, commercial pharmaceutical carbamazepine was chosen as a model to be degraded by a heterogeneous Fenton system using natural pyrite as catalyst. The catalyst was characterized by X-ray diffraction apparatus, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. …”
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  5. 465

    Resolving active species during the carbon monoxide oxidation over Pt(111) on the microsecond timescale by Calley N. Eads, Weijia Wang, Ulrike Küst, Julia Prumbs, Robert H. Temperton, Mattia Scardamaglia, Joachim Schnadt, Jan Knudsen, Andrey Shavorskiy

    Published 2025-01-01
    “…Beyond using CO pulses to determine active species, we demonstrate how careful tuning of pulsing parameters can be used for dynamic catalyst operation to enhance CO2 formation.…”
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  6. 466

    Heterogeneous Photo-Fenton-like Degradation of Oxytetracycline Containing Wastewater by Gülin Ersöz, Ceren Orak

    Published 2024-03-01
    “…In this study, the effects of key reaction parameters such as pH (3, 6, 9), catalyst amount (0-0.8 g/L), initial hydrogen peroxide concentration (HP, 0-20 mM) on the degradation of oxytetracycline were studied. …”
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    Article
  7. 467

    Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System by Paolo Ciambelli, Diana Sannino, Vincenzo Palma, Vincenzo Vaiano, Roberto S. Mazzei

    Published 2009-01-01
    “…In the photocatalytic oxidative dehydrogenation of cyclohexane to benzene on MoOx/TiO2-A12O3 catalyst the use of UVA-LEDs modules allowed to achieve a cyclohexane conversion and benzene yield higher than those obtained with traditional UV lamps. …”
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    Article
  8. 468

    Palladium nanoparticles immobilized on magnetic MCM-41 surface modified with aminomethylpyridine: As a recyclable palladium nanocatalyst for carbon-carbon cross-coupling reactions by Zeinab Shirvandi, Amin Rostami

    Published 2025-01-01
    “…A new catalyst was synthesized by first immobilizing 2-amino-6-methylpyridine on a magnetic mesoporous surface (MMCM-41), followed by adding palladium nanoparticles on the modified surface. …”
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    Article
  9. 469

    Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants by Md. Sahadat Hossain, Shifa Sarkar, Samina Ahmed

    Published 2025-01-01
    “…The Hap containing 0.25% Ag showed better photocatalytic activity in various dye concentrations, catalyst doses, and pH. At a very low catalyst dose (0.375 g/L) and 20 ppm pollutant concentration, reaction rate, and rate constant were evaluated for the Congo Red dye, ciprofloxacin, amoxicillin, and levofloxacin. …”
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  10. 470
  11. 471

    Fabrication of Ag and Ni Nanocatalyst with Enhanced Efficiency by Tajamal Hussain, Mira Tul Zubaida Butt, Mirza Nadeem Ahmed, Muhammad Hamid Raza, Zahoor Hussain Farooqi, Khurram Shehzad, Adnan Mujahid, Rabia Batool

    Published 2015-01-01
    “…In this work, two different metal NPs have been prepared and their catalytic activities are compared with conventional catalyst. In first case, Ag NPs were synthesized by chemical reduction method in ethanolic medium. …”
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  12. 472

    UNIVERSITY OF ECONOMICS IN SUSTAINABLE DEVELOPMENT OF A REGION by Olga V. Molchanova

    Published 2022-05-01
    “…The article suggests that vocational education is a strategic priority and a catalyst for the development of a region in complex socio-demographic conditions. …”
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  13. 473

    Biocatalytic conversion of microalgal biomass to biodiesel: optimization of growth conditions and synthesis of CaO bionanocatalyst from Monoraphidium sp. NCIM 5585 by Supriya Pandey, Thivaharan Varadavenkatesan, Raja Selvaraj, Ramesh Vinayagam

    Published 2025-02-01
    “…XRD revealed the crystalline nature of CaO with particle size of 17.83 nm. 86.5 ± 0.65% (w/w) FAME was obtained using the synthesized catalyst and was characterized using 1H NMR, 13C NMR and GC-MS. …”
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    Article
  14. 474

    Influence of Alkali Treatment on the Surface Area of Aluminium Dross by N. S. Ahmad Zauzi, M. Z. H. Zakaria, R. Baini, M. R. Rahman, N. Mohamed Sutan, S. Hamdan

    Published 2016-01-01
    “…Further investigation on the physicochemical of aluminium dross with different acid or alkali should be conducted to get deeper understanding on the aluminium dross as a catalyst-type material.…”
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  15. 475

    Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production by Mostafa Feyzi, Leila Norouzi, Hamid Reza Rafiee

    Published 2013-01-01
    “…The kinetic of the transesterification reaction over the CsXH3−XPW12O40/Fe-SiO2 catalyst prepared using sol-gel and impregnation procedures was investigated in different operational conditions. …”
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  16. 476

    Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor by F. Shokry, M. El-Gedawy, S.A. Nosier, M.H. Abdel-Aziz

    Published 2025-01-01
    “…Optimal conditions (neutral pH, 1 g/L catalyst loading, and 4 L/min flow rate) achieved complete decolorization of a 10-ppm dye solution. …”
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    Article
  17. 477

    A Review on Machine Learning Application in Biodiesel Production Studies by Yuanzhi Xing, Zile Zheng, Yike Sun, Masoome Agha Alikhani

    Published 2021-01-01
    “…Fatty methyl acid ester stands as the output parameter, and the input parameters include oil and catalyst type, methanol-to-oil ratio, catalyst concentration, reaction time, domain, and frequency. …”
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  18. 478

    PHOTOCATALYTIC DEGRADATION OF REACTIVE RED DYE AND OPTIMIZATION OF THEIR EXPERIMENTAL FACTORS by Olabode Victor O., Alogala J.A., Okon U.E., Jinaidu Haruna M., Gamde, G.G., Jahkeng Williams E

    Published 2023-11-01
    “…Box-Behnken design of experiment for the optimization of the experimental parameters of the photocatalytic degradation of reactive red dye using dye concentration (mg/L), catalyst dosage (mg/L), pH and time of exposure as experimental factors was studied and reported. …”
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    Article
  19. 479

    Physicochemical Characterization and Asymmetric Catalytic Properties of New Biobased Organocatalytic Surfactants by Elliot Calbrix, Pascale de Caro, Sophie Thiebaud-Roux, Christine Cecutti, Emeline Vedrenne

    Published 2025-01-01
    “…The imidazolidinone moiety acts as catalyst, but also as the polar head of the surfactant, while the fatty chain constitutes the hydrophobic tail. …”
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  20. 480

    Bifunctional Tailoring of Platinum Surfaces with Earth Abundant Iron Oxide Nanowires for Boosted Formic Acid Electro-Oxidation by Bilquis Ali Al-Qodami, Heba H. Farrag, Sayed Youssef Sayed, Nageh K. Allam, Bahgat E. El-Anadouli, Ahmad M. Mohammad

    Published 2018-01-01
    “…Field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) were all employed to inspect, respectively, the surface morphology, bulk composition, and crystal structure of the catalyst. The electrochemical impedance spectra could correlate the charge transfer resistances for FAO over the inspected set of catalysts to explore the role of FeOx in mediating the reaction mechanism.…”
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    Article