酸衍生的等级活性碳的孔可控合成,用于稀释CO2捕获2
Zhenghua Ye1, Lei Liu2, Xi Luo1
1Textile Pollution Controlling Engineering Center of Ministry of Ecology and Environment, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
这项研究引入了p-phthalic 酸衍生活性炭 (PTA-C) 来有效地从稀释来源捕获二氧化碳 (CO2). 胺基修饰的PTA-C显著增强了二氧化碳吸附能力,为工业应用提供了具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 稀释二氧化碳 (CO2) 捕获对于减缓气候变化至关重要.
- 稀释CO2的吸附过程受到缓慢的扩散速度的阻碍.
研究的目的:
- 开发一种具有成本效益的层次性多孔活性炭,用于稀释二氧化碳捕获.
- 通过氨基修饰来提高二氧化碳吸附能力.
主要方法:
- 合成p-phthalic 酸衍生活性炭 (PTA-C) 的合成.
- 描述PTA-C的多孔结构 (BET表面积,多孔体积).
- 评估PTA-C和胺基修饰的PTA-C (PTA-NC) 的二氧化碳吸附能力.
主要成果:
- 在PTA-C中,BET表面积为1012.527 m2/g,孔积为2.257 cm3/g.
- 在环境条件下,PTA-C实现了0.89 mmol/g的稀释CO2吸附能力.
- 胺基修饰的PTA-C (PTA-NC) 显示了2.71 mmol/g的显著更高的二氧化碳吸收.
结论:
- 由于其分层的多孔结构,PTA-C是稀释二氧化碳捕获的有希望的材料.
- 胺基修饰大大提高了二氧化碳吸附能力,超过了商业活性炭.
- 从聚织物中使用易于获得的p-phthalic acid可确保大规模碳捕获和储存 (CCS) 的成本效益.
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