协同的合酸漏策略用于从飞中合成氧气凝,以及性能优化
Jin Xia1, Bingchao Zhao2, Yufeng Guo1
1College of Energy and Mining Engineering, Xi'an University of Science and Technology, Xi'an, 710000, China.
Scientific reports
|November 17, 2025
概括
这项研究用飞,一种工业废物制成轻量级的气凝块. 优化的融合和酸漏条件产生了一种疏水性气凝,具有优越的性能,可用于潜在的工业应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 煤炭燃烧的副产品飞经常被填埋.
- 从废物中合成先进材料的开发具有成本效益的方法对于可持续性至关重要.
- 气凝具有独特的特性,如低密度和高表面积,但通常是昂贵的生产.
研究的目的:
- 为了合成轻量级的,疏水性氧化气凝块从飞灰.
- 为了研究的融合温度和盐酸 (HCl) 度对气凝性能的影响.
- 建立最佳的制备条件,以从飞中生产高性能氧气凝.
主要方法:
- 飞灰是通过与氧化 (NaOH) 的融合和化处理的.
- 使用sol-gel方法使用表面修饰和环境压力干燥.
- 盐酸 (HCl) 浸出在不同度进行,以优化气凝结构.
- 描述包括扫描电子显微镜 (SEM),传输电子显微镜 (TEM),布鲁纳尔埃米特泰勒 (BET) 分析,利埃变形红外光谱 (FTIR) 和X射线光电子光谱 (XPS).
主要成果:
- 在飞灰与NaOH的质量比为1:1.2和HCl度为4mol/L的情况下,可以实现最佳的合成.
- 由此产生的氧化气凝呈现出一个均的,密集的,链状的3D网络结构.
- 关键性质包括384.61 m2/g的特定表面积,0.36 cm3/g的孔隙体积和3.28 nm的平均孔隙直径.
- 气凝显示出出色的疏水性和热稳定性.
结论:
- 开发了一种廉价且有效的方法,从飞中生产高质量的气凝.
- 优化的工艺产生了一种轻量级,疏水性材料,具有卓越的性能.
- 这些发现为从飞灰制成的气凝的工业规模生产提供了宝贵的指导,促进了废物回收利用.
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