Showing 141 - 160 results of 243 for search '"alumina"', query time: 0.06s Refine Results
  1. 141

    Synergetic effects of nano-boehmite and Y nano-zeolite on catalytic cracking of residue oil by Ehsan Amini, Kamran Ahmadi, Alimorad Rashidi, Amir Ali Youzbashi, Mehran Rezaei, Sakineh Mesgar

    Published 2025-01-01
    “…On the other hand, in equal zeolite content, the alumina active matrix-based catalyst possessed higher acidity (NC30B20, 3.44 mmol NH3/g catalyst) than the silica inactive matrix-based catalyst (NC30B0, 2.31 mmol NH3/g catalyst). …”
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    Article
  2. 142
  3. 143

    Separation Time of Aluminothermic Reduction Products for Sustainable Silicon Production [version 2; peer review: 2 approved] by Óscar Crego, Javier Bullón, Dolores Gómez, José Luis Ferrín, Luis Javier Pérez-Pérez, Iván Martínez

    Published 2025-01-01
    “…Methods The process takes place in a rotary kiln producing silicon (Si) and alumina slag (actually, a CaO – Al2O3 slag), which must be separated at the end to extract the silicon. …”
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  4. 144

    The Adsorption of Pentachlorophenol from Aqueous Solutions onto Exchanged Al-MCM-41 Materials by Kheira Marouf-Khelifa, Amine Khelifa, Ahmed Belhakem, Reda Marouf, Fatiha Abdelmalek, Ahmed Addou

    Published 2004-02-01
    “…At the same temperature, the adsorption of PCP on (Cu)Al-MCM-41 was more pronounced compared to its adsorption on alumina-pillared montmorillonite and mesoporous alumina aluminium phosphates. …”
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    Article
  5. 145

    Physical and mathematical modeling of inclusion removal with gas bottom-blowing in continuous casting tundish by Zhang M.J., Gu H.Z., Huang A., Zhu H.X., Deng C.J.

    Published 2011-01-01
    “…In this paper, spherical alumina particles were selected to model inclusions, 1:3 scale model was utilized, the removal efficiency of inclusions with the gas bottomblowing in the tundish was studied by physical and mathematical modeling. …”
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    Article
  6. 146

    Simulation of Proton Beam Effects in Thin Insulating Films by Ljubinko Timotijevic, Irfan Fetahovic, Djordje Lazarevic, Milos Vujisic

    Published 2013-01-01
    “…Materials considered include silicon dioxide, silicon nitride, aluminium nitride, alumina, and polycarbonate (Lexan). The passage of proton beams through ultrathin layers of these materials has been modeled by Monte Carlo simulations of particle transport. …”
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    Article
  7. 147

    About brownian movement in liquids by E. I. Marukovich, V. Yu. Stetsenko, A. V. Stetsenko

    Published 2020-12-01
    “…In liquid aluminum alloys, Brownian particles are microscopic alumina particles that remain in the castings when they solidify.…”
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    Article
  8. 148

    Prediction of Al2O3 leaching recovery in the Bayer process using statistical multilinear regresion analysis by Đurić I., Đorđević P., Mihajlović I., Nikolić Đ., Živković Ž.

    Published 2010-01-01
    “…This paper presents the results of defining the mathematical model which describes the dependence of leaching degree of Al2O3 in bauxite from the most influential input parameters in industrial conditions of conducting the leaching process in the Bayer technology of alumina production. Mathematical model is defined using the stepwise MLRA method, with R2 = 0.764 and significant statistical reliability - VIF<2 and p<0.05, on the one-year statistical sample. …”
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    Article
  9. 149

    Additive-manufactured ceramics for dental restorations: a systematic review on mechanical perspective by Yuqing Lu, Anouk van Steenoven, Amanda Maria de Oliveira Dal Piva, João Paulo Mendes Tribst, Li Wang, Li Wang, Cornelis J. Kleverlaan, Albert J. Feilzer, Albert J. Feilzer

    Published 2025-02-01
    “…The available ceramics include zirconia, alumina and alumina-zirconia composites, lithium disilicate, porcelain and fluorapatite glass ceramic. …”
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  10. 150

    PHYSICO-CHEMICAL INTERACTIONS BETWEEN COMPONENTS OF THE Al/SiO2 SYSTEM IN METALLURGICAL SYNTHETIC PROCESSES OF CASTING PARTICULATE REINFORCED ALUMINUM ALLOYS by I. V. Rafalski, B. M. Nemenenok

    Published 2017-07-01
    “…At the temperature-time processing of the Al/SiO2 compositions, alumina ceramic with a contact surface layer providing spontaneous wetting with liquid aluminum is realized.…”
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    Article
  11. 151

    Demonstrating and Investigating the Mechanical Strength of Solar Cells by V. Ravi Raj, R. Krishna Priya, K. V. Bindu, N. Prabhu, S. Madhavarao, G. Ramkumar, A. H. Seikh, M. H. Siddique, Endalkachew Mergia Anbese

    Published 2022-01-01
    “…This study reports on the silicon photovoltaic cells with such an alumina metallization. The photovoltaic cell’s silicon component was subjected to an effective stress studied using a simulation model built with this information. …”
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    Article
  12. 152

    Entropy Generation Study on Natural and Forced Convection of Nanofluid Flow in Vertical Channels by S. E. Ghasemi, A. A. Ranjbar

    Published 2025-01-01
    “…The water‐based suspension of alumina nanoparticles with different volume fractions is considered a heat transfer fluid. …”
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    Article
  13. 153

    Kinetics of the Leaching Process of an Australian Gibbsitic Bauxite by Hydrochloric Acid by Aichun Zhao, Ting-an Zhang, Guozhi Lv, Wenyan Tian

    Published 2016-01-01
    “…This work aims to provide a good theory support for the process control by using a new method of alumina production from the low grade bauxite.…”
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    Article
  14. 154

    Modern electrochemical processes and technologies in ionic melts by Omelchuk A., Volkov S.V., Zarubitskii O.G.

    Published 2003-01-01
    “…The use of bipolar electrodes and β-alumina diaphragms hinders the transfer of metallic impurities from the anode to the cathode. …”
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    Article
  15. 155

    Surface Properties and Catalytic Activity of Ni/AlO–AlPO Catalysts by S.A. El-Hakam, A.A. El-Khouly, A.S. Khder

    Published 1999-05-01
    “…Thus, XRD studies demonstrated the presence of nickel metal, nickel aluminate spinel, γ-alumina and tridymite phases while both the surface areas and the porous structures were found to depend on the metal content and calcination temperatures. …”
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    Article
  16. 156

    Hydrogenolysis of n-Butane over Ru/AlO Catalysts by Janusz Ryczkowski, Marcin Kuśmierz, Dobiesław Nazimek, Sylwia Pasieczna

    Published 2002-12-01
    “…The infrared spectra of ruthenium red and EDTA adsorbed on alumina indicated that interaction occurs between adsorbates and the support surface. …”
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    Article
  17. 157

    Mixed Convection Squeezing Flow of Nanofluids in a Rotating Channel with Thermal Radiation by Wankui Bu, Hui Xu, Ilyas Khan, Sheikh Irfan Ullah Khan, Anwar Zeb

    Published 2022-01-01
    “…Water and ethylene glycol are the base fluids along with gamma-alumina nanoparticles. The coupled nonlinear system of PDEs is transformed into a system of ODEs with the support of some appropriate resemblance alterations. …”
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    Article
  18. 158

    Sulfonated polystyrene foam waste as an efficient catalyst for Friedel-Crafts type reactions by Behrang Moazzen, Roya Kamrouz, Alireza Khorshidi

    Published 2025-01-01
    “…Abstract The catalytic efficiency of sulfonated polystyrene foam waste (SPS) and sulfonated gamma alumina (SGA) in Friedel-Crafts type reactions was compared. …”
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    Article
  19. 159

    Catalytic Activity of a Bifunctional Catalyst for Hydrotreatment of Jatropha curcas L. Seed Oil by J. García-Dávila, E. Ocaranza-Sanchez, C. Sánchez, A. L. Martínez-Ayala

    Published 2018-01-01
    “…The HPVO is applied to Jatropha curcas oil on USY zeolite supported with gamma alumina and platinum deposition on the catalytic as hydrogenation component. …”
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  20. 160

    FLY ASH-GEOPOLYMER COMPOSITE OBTAINED BY ADDITION OF RECYCLED POST-CONSUMER PACKAGING BOTTLE by Lucian Paunescu, Eniko Volceanov, Marius Florin Dragoescu, Bogdan Valentin Paunescu

    Published 2024-12-01
    “… The experiment described in this paper is part of the series of worldwide investigation of the influence of different types of alumina-silicate waste on properties of geopolymer concrete. …”
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    Article