Synthesis and characterization of nano α-alumina by an inorganic sol-gel method

被引：10

作者：

Niero, Danila Ferreira ^{[1
]}

Klegues Montedo, Oscar Rubem ^{[1
]}

Bernardin, Adriano Michael ^{[1
]}

机构：

[1] Univ Extremo Sul Catarinense, Grad Program Mat Sci & Engn, Av Univ 1105, BR-88806000 Criciuma, SC, Brazil

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2022年 / 280卷

关键词：

Nano materials; Inorganic synthesis; Sol-gel; Alpha alumina; GAMMA-ALUMINA; MESOPOROUS ALUMINA; FACILE ROUTE; POWDER; TRANSFORMATION; TEMPERATURE; CERAMICS;

D O I：

10.1016/j.mseb.2022.115690

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work aimed at the synthesis of nano alpha-alumina by an inorganic sol-gel method and subsequent calcination at 1,200 degrees C. The concentration of the precipitating agent (sodium hydroxide) and the order of reaction were varied, resulting in aluminum hydroxide. Aluminum chloride and aluminum nitrate were used as precursors. After synthesis, the samples were calcined at 1,200 degrees C for 1 h to obtain the desired nano alumina phase. The alumina powders were analyzed by DSC/TG, XRD, DLS, zeta potential, FTIR, FESEM and BET techniques. As a result, the use of 12 M NaOH and aluminum chloride and nitrate dripped simultaneously yielded 89 % Al(OH)(3) and 58 % Al2O3 after calcination. Nano alpha-alumina was obtained by a simple method using salts as precursors and a final calcination.

引用

页数：10

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