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alumina    音标拼音: [əl'umənə]
n. 矾土

矾土

alumina
n 1: any of various forms of aluminum oxide occurring naturally
as corundum [synonym: {alumina}, {aluminum oxide}, {aluminium
oxide}]


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  • Alumina - an overview | ScienceDirect Topics
    Alumina is a valuable raw material used in the production of various products such as adsorbents, abrasives, polishing agents, refractory materials, and aluminum It is obtained from bauxites through the Bayer process and requires the removal of certain organic compounds to enhance its production From: Journal of Hazardous Materials, 2020
  • Recent processes for the production of alumina nano-particles
    Abstract Alumina nano-particles have wide usage in the adsorption and catalysis fields, because of its acid-base properties, high specific area, mechanical and thermal stability The first part of the review interested on the various processes for the production of nano-particles alumina
  • Chemistry of alumina, reactions in aqueous solution and its application . . .
    Due to the common presence of alumina in the natural aquatic environment, several applications in water treatment technology and also its wide industrial application, the understanding of the chemistry of alumina in water is necessary in order to fully comprehend the mechanisms governing the reactions at solid–liquid interface
  • Structural, Surface, and Catalytic Properties of Aluminas
    The published data concerning the structural, surface, and catalytic properties of aluminas are reviewed, and these properties are related to the prep…
  • High-temperature mechanical properties and thermal . . . - ScienceDirect
    Oxide oxide ceramic matrix (oxide oxide) composites are a class of materials that show excellent mechanical properties under severe conditions, such as high-temperature and oxidation erosion They have garnered increasing attention with the fast-growing market for thermal-structural materials [1] Oxide oxide composites typically consist of alumina-based fibers embedded in an alumina-based
  • Organized mesoporous alumina: synthesis, structure and potential in . . .
    Organized mesoporous alumina represents a very interesting molecular sieve exhibiting a narrow pore size distribution with higher surface areas compared to conventional aluminas, used as a support for catalytically active species in numerous large-scale industrial processes
  • Alumina Production - an overview | ScienceDirect Topics
    2 8 Alumina production trends As seen in production figures discussed earlier, alumina is used primarily as a feedstock in making aluminium metal As demand for the metal continues to increase, this is the primary driver in the anticipated growth of alumina production The Bayer process continues to dominate this production, although rapidly increasing capacity in China has introduced a number
  • Kinetics and properties of porous alumina with a dense surface layer . . .
    Porous alumina with a dense surface layer was prepared via pressureless sintering of bimodal powders followed by vacuum impregnation using a nano-alum…
  • Alumina fibers: composites and applications - ScienceDirect
    Alumina fibers are high-performance ceramic fibers made from aluminum oxide (Al 2 O 3), a material that is known for its exceptional strength, stiffness, and resistance to high temperatures The chapter focuses on the latest developments and advances in alumina fibers and their composites, focusing on their synthesis, properties, fabrication, and applications The review covers a brief
  • Alumina ceramics - ScienceDirect
    Alumina (Al2O3) is a natural metal oxide with a broad range of industrial applications such as abrasive materials secondary to its high hardness Besides higher hardness, the superior wear and corrosion resistance along with biocompatibility have turned this material into a popular candidate in dentistry 21 The very fine grain size of medical-grade alumina ceramics hinders static fatigue and





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