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回收煤灰用于超热绝缘气凝纤维制备,同时进行Al2O3提取

Jie Gu^1,2,3, Lipeng Liu^1,2,3, Rongrong Zhu^1,2

¹School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China.

Molecules (Basel, Switzerland)

|December 23, 2023

概括

煤炭飞灰被转化为先进的气凝纤维和高纯度的氧化. 这些新型复合气凝纤维为可穿戴应用提供了出色的机械和热绝缘性能.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

煤炭飞灰由于大规模的产生和处置问题而构成了重大的全球环境挑战.
开发可持续的煤炭飞灰利用方法对于减轻环境威胁至关重要.

研究的目的:

为了将煤炭飞灰转化为先进的气凝纤维和高纯度氧化.
探索这些新材料在解决环境问题和实现新应用方面的潜力.

主要方法:

通过环境压力干燥的in situ sol-gel工艺合成-细菌纤维素复合气凝纤维 (CAFs).
同时从煤炭飞灰中提取氧化 (Al2O3).
描述CAF的机械性能,多孔性,特定表面积,绝热性和疏水性.

主要成果:

CAFs展示了一个独特的纳米级互穿网络 (IPN) 结构.
在5.8%的延伸下实现了5.0 MPa的最佳拉伸强度.
CAF显示出高透度 (91.8%),高特异面积 (588.75 m2/g),优异的隔热,广泛的温度稳定性和疏水性 (接触角~144°).
高纯度的α-Al2O3被成功提取,确保充分利用煤炭飞灰.

结论:

低成本的编织CAF织物适用于可穿戴应用.
这种方法提供了煤炭飞灰的综合利用策略,有效地解决环境威胁.

关键词:

Al2O3 的使用情况.细菌纤维素的细菌纤维素.煤炭飞灰是什么意思煤炭飞灰高强度的高强度的强度.氧化气凝纤维是有氧化的纤维.热绝缘热绝缘热绝缘热绝缘

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