添加剂对CO2的作用 聚乙烯聚胺装载MCM-41的吸附
Xia Wang1, Wulan Zeng1, Peidan Hu1
1Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, China.
Molecules (Basel, Switzerland)
|March 13, 2024
概括
本研究将与聚乙烯聚胺 (PEPA) 共同浸的以太化合物引入MCM-41中,以增强CO2吸附. 复合化学吸收剂显示了更好的容量和氨基效率,克服了液体氨基的限制.
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:
- 有机氨基修饰的中孔载体是有前途的二氧化碳吸附剂.
- 液体氨基聚合和挥发性限制二氧化碳吸附性能.
研究的目的:
- 开发用于增强二氧化碳吸附的复合化学吸收剂.
- 通过使用MCM-41载体,研究以太化合物作为添加剂对二氧化碳捕获的影响.
主要方法:
- 将聚乙烯聚胺 (PEPA) 与四种以太化合物同时浸成MCM-41.
- 纹理,表面和元素性质的表征.
- 研究添加剂类型/数量,温度和流速对二氧化碳吸附的影响.
主要成果:
- 在MCM-41中与PEPA同时浸10%的2-propoxyethanol (1E),使CO2吸附能力提高到1.81 mmol/g.
- 在特定流速下,最大吸附能力达到2.16 mmol/g.
- 添加剂1E改善了再生和动力学,表明了多个吸附路径.
结论:
- 乙烯化合物添加剂有效地提高了氨基改性介质载体的二氧化碳吸附性能.
- 复合化学吸收剂提供了一种可行的解决方案,以克服二氧化碳捕获中的液体胺的局限性.
- 优化的复合材料显示出更高的效率和再生能力.
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