可持续的CO2捕获:来自石油焦炭的N,S-编码多孔碳,具有高选择性和稳定性
Jiawei Shao1, Yingyi Wang1, Mingyang Che1
1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
Molecules (Basel, Switzerland)
|January 25, 2025
概括
研究人员从石油焦炭中开发出具有成本效益的N,S-编的多孔碳,用于二氧化碳 (CO2) 捕获. 优化材料具有高容量,选择性和稳定性,为缓解全球变暖提供可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 二氧化碳 (CO2) 捕获对于缓解全球变暖至关重要.
- 开发高效和成本效益的碳基吸附剂仍然是一个挑战.
- 石油焦炭是一种工业副产品,具有吸附剂合成的潜力.
研究的目的:
- 从石油焦炭中开发具有成本效益和高性能的二氧化碳吸附剂.
- 研究合成参数对吸附剂性能的影响.
- 评估开发材料的二氧化碳捕获性能和稳定性.
主要方法:
- 两步合成,涉及硫尿素修饰和石油焦炭的KOH激活.
- 不同的激活温度和KOH数量调整吸附性质.
- 孔隙结构的特征,表面积,和异构原子的兴奋剂 (N,S).
主要成果:
- 优化N,S编码的多孔碳表面积为1088 m2/g,微孔体积为0.52 cm3/g.
- 高二氧化碳吸附能力在25°C时为3.69 mmol/g,在0°C时为5.08 mmol/g (1 bar).
- 优良的CO2/N2选择性 (17),快速的动力学 (90%的吸收在5分钟内) 和高周期性稳定性 (5个周期后97%的保留).
结论:
- 来自石油焦的N,S-编的多孔碳对有效的二氧化碳捕获有希望.
- 开发的吸附剂显示出高容量,选择性,稳定性和成本效益.
- 这种方法为利用工业副产品在碳捕获技术中提供了一个可持续的途径.
更多相关视频
10:44Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
9.8K
08:00Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture
Published on: September 29, 2023
2.2K
相关概念视频
Bioremediation
17.4K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
17.4K
Supercritical Fluid Chromatography
1.5K
Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
SFC utilizes a supercritical fluid mobile phase,...
1.5K
Carbon-dioxide Fixation
873
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
873
