通过使用酸盐前体作为对CO2捕获应用的选择性吸附剂的ex和in-situ方法进行氨基功能化的多孔氧化生产
Hendrix Abdul Ajiz1, W Widiyastuti1, Heru Setyawan1
1Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, 60111, Indonesia.
Heliyon
|March 8, 2024
概括
氨基功能化颗粒的现场修饰与现场方法相比,产生更好的二氧化碳吸附. 这种优化的路线可提高氨基负载和表面性能,以实现高效的碳捕获应用.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 在二氧化碳吸附方面,颗粒被广泛研究.
- 开发高效的氨基基改性二氧化用于碳捕获仍然是一个挑战.
- 对比ex-situ和in-situ修饰路径对于优化吸附剂性能至关重要.
研究的目的:
- 为了比较通过 ex-situ 和 in-situ 路径合成的氨基基改性颗粒的特性.
- 为了评估这些改性颗粒的二氧化碳气体吸附性能.
- 建立结构与财产的关系,以提高二氧化碳的捕获.
主要方法:
- 现场修改:两步过程,涉及使用酸硫酸盐 (SLS) 模板和超声波辅助浸的二氧化粒子形成.
- 现场修改:单步过程混合源和修改剂,同时去除SLS模板.
- 修改的二氧化颗粒的表征和评估在不同压力下二氧化碳吸附能力.
主要成果:
- 由于同时凝结,在现场的修改导致了较高的氨基负载 (1.2845 mmol/g) 与现场 (0.9610 mmol/g) 相比.
- 在现场合成中增加的SLS模板度与更高的表面积和氨基负载线性相关.
- 在二氧化表面的氨基荷载与二氧化碳吸附能力呈现出线性关系.
结论:
- 在现场路线提供了一种更有效的方法,用于生产氨基基改性,增强二氧化碳吸附.
- 使用SLS模板进行了优化的现场合成,在6bar时实现了最高的吸附能力 (2.32 mmol/g二氧化).
- 这些发现凸显了现场改性在实际二氧化碳捕获技术中的潜力.
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