氨基接胺吸附剂的可行性和有效性,用于直接捕获空气
Yanlin Chen1, Lijun Zhu2, Junye Wu1
1Institute of Refrigeration and Cryogenics, Research Center of Solar Power & Refrigeration, Shanghai Jiao Tong University, Shanghai 200240, China.
Langmuir : the ACS journal of surfaces and colloids
|November 28, 2024
概括
直接捕获空气 (DAC) 使用固体氨基吸附剂去除二氧化碳. 研究人员开发了一种新型的氨基接种合金吸附剂,具有出色的稳定性和容量,有望有效地去除碳.
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:
- 直接捕获空气 (DAC) 对于减轻全球变暖至关重要.
- 固体氨基吸附剂是DAC的首选,因为它的挥发性较低.
- 氨基移植的二氧化是常见的,但缺乏水热稳定性.
研究的目的:
- 为了研究作为一种支持材料的氨基移植DAC吸收剂.
- 开发和描述一种新型的氨基接种合金吸收剂.
- 为了评估其二氧化碳捕获性能和稳定性.
主要方法:
- 将3-[2-[2-aminoethylamino) ethylamino] propyltrimethoxysilane (TRI) 移植到γ-上. 这是一个非常简单的方法.
- 在400ppm和25°C时测量二氧化碳吸附能力.
- 评估热稳定性,循环性能和水的选择性.
主要成果:
- 采用TRI接种的合金吸附剂实现了0.39 mmol g-1.1的二氧化碳容量.
- 与胺浸的二氧化相比,吸附剂显示出优越的热稳定性.
- 观察到稳定的周期性性能,在60个周期后保持83%的容量.
- 即使在相对湿度高的情况下,也注意到了良好的选择性.
结论:
- 是一种可行且有前途的支持材料,用于DAC中的氨基接种.
- 开发的TRI-grafted合金吸附剂显示了有效和稳定的二氧化碳捕获的潜力.
- 这种进步有助于开发有效的负排放技术.
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