Scholarlink

<p>This study explores the synthesis of boehmite (γ-AlOOH) from gibbsite under controlled hydrothermal conditions and its subsequent transformation into α-alumina. Commercial aluminum hydroxide was subjected to phase transformations at varying temperatures (180, 200, and 220&#xa0;°C) and reaction durations (30, 60, and 180&#xa0;min). The optimal synthesis parameters were identified as 200&#xa0;°C for 60&#xa0;min, yielding boehmite with high purity and crystallinity. The synthesized boehmite was then calcined at 1200&#xa0;°C for 3&#xa0;h to produce α-alumina, which was extensively characterized and compared to the industrial benchmark product, EtiAlü 301. Notably, the calcined boehmite exhibited superior chemical purity, characterized by significantly reduced sodium oxide (Na₂O) content (0.03%) and a finer particle size distribution (D50: 4.18&#xa0;μm) compared to EtiAlü 301. These results underscore the efficacy of the boehmite synthesis approach in producing high-purity alumina, rendering it highly suitable for advanced industrial applications in fields such as ceramics, catalysts, and battery separators.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimizing Boehmite Synthesis for Advanced Industrial Applications: Insights into Gibbsite Transformation

  • 期刊论文

  • 发表日期：

    2025年8月19日

查看全文
  • Ömer Faruk Toy,
  • Sema Karslioglu

摘要

This study explores the synthesis of boehmite (γ-AlOOH) from gibbsite under controlled hydrothermal conditions and its subsequent transformation into α-alumina. Commercial aluminum hydroxide was subjected to phase transformations at varying temperatures (180, 200, and 220 °C) and reaction durations (30, 60, and 180 min). The optimal synthesis parameters were identified as 200 °C for 60 min, yielding boehmite with high purity and crystallinity. The synthesized boehmite was then calcined at 1200 °C for 3 h to produce α-alumina, which was extensively characterized and compared to the industrial benchmark product, EtiAlü 301. Notably, the calcined boehmite exhibited superior chemical purity, characterized by significantly reduced sodium oxide (Na₂O) content (0.03%) and a finer particle size distribution (D50: 4.18 μm) compared to EtiAlü 301. These results underscore the efficacy of the boehmite synthesis approach in producing high-purity alumina, rendering it highly suitable for advanced industrial applications in fields such as ceramics, catalysts, and battery separators.