硫酸盐接种的多孔聚合物网络用于在低压下优选的二氧化碳吸附
Weigang Lu1, Daqiang Yuan, Julian Sculley
1Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States.
Journal of the American Chemical Society
|October 20, 2011
概括
硫酸移植的多孔聚合物网络 (PPNs) 显示出增强的二氧化碳 (CO2) 吸附和 (N2) 上的选择性. 这些稳定的材料在燃烧后的二氧化碳捕获应用中显示出前景.
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:
- 燃烧后的二氧化碳 (CO2) 捕获对于缓解气候变化至关重要.
- 开发高效和稳定的吸收材料是推进二氧化碳捕获技术的关键.
研究的目的:
- 合成和表征新型多孔聚合物网络 (PPNs) 与硫酸组接种.
- 评估这些修改后的PPN的二氧化碳吸附能力和选择性.
主要方法:
- 多孔聚合物网络 (PPN) 的合成.
- 接种硫酸组 (PPN-6-SO(3) H) 和它们的盐 (PPN-6-SO(3) Li).
- 对CO2/N2混合物的同热度测量和理想吸附溶液理论 (IAST) 计算.
主要成果:
- PPN-6-SO(3) H和PPN-6-SO(3) Li显示了显著增加的二氧化碳吸附的同质热量.
- 对于修改后的PPN,观察到高的二氧化碳吸收能力.
- 异常的CO2对N2吸附选择性 (155对于PPN-6-SO(3) H,414对于PPN-6-SO(3) Li) 通过IAST计算在295K和1bar以15/85的CO2/N2比率来确定.
- 这些PPN具有超高的物理化学稳定性.
结论:
- 用硫酸接种的PPN是捕获二氧化碳的有希望的材料.
- 增强的二氧化碳吸附和选择性,再加上高稳定性,建议在燃烧后的二氧化碳捕获中有实际应用.
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