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

2014年1月1日 · The published data concerning the structural, surface, and catalytic properties of aluminas are reviewed, and these properties are related to the prep…

Production of alumina J. Metson, in Fundamentals of Aluminium Metallurgy, 2011 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 …

Alumina is defined as aluminum oxide, a white powder produced through the Bayer process which involves the dissolution of bauxite in caustic soda, followed by precipitation and calcination steps.

2024年12月18日 · Porous alumina with a dense surface layer was prepared via pressureless sintering of bimodal powders followed by vacuum impregnation using a nano-alum…

2004年6月30日 · 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.

2023年4月1日 · Toward sustainable green alumina production: A critical review on process discharge reduction from gibbsitic bauxite and large-scale applications of red mud

Aluminum Oxide (Al2 O 3) is commonly called alumina. Because of the use of aluminum oxide as abrasives in polishing operations, a large number of different particle size ranges are available, which give fluorocoating formulators a lot of flexibility. Many companies produce these materials.

The objective was to investigate the potential replaceability of alumina with these low-cost support materials. The reforming activity, hydrogen production and coking of the prepared Ni catalysts was investigated and compared with Ni supported on alumina.

2017年7月25日 · The zirconia, alumina, and zirconia-alumina (x Zr-Al) supported PtSnIn catalysts were prepared and comparatively studied for propane dehydrogenation reaction. The structure–function relationships of the resultant catalysts are well elucidated upon several state-of-art physico-chemical characterizations.