用ReaxFF分子动力学模拟城市固体废物焦油模型化合物的化学循环与氧气脱的研究
Zhihan Lu1, Yousheng Lin2, Runhua Ye1
1Guangdong Provincial Key Laboratory of Multi-Energy Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, 523808, China.
Journal of molecular modeling
|April 29, 2025
概括
有氧解 (CLOU) 的化学循环有效地通过氧化焦油化合物,如二烯,和二烯,将它们氧化成CO2和H2O来处理城市固体废物 (MSW). 这种使用ReaxFF MD模拟的过程表明,CuO氧载体对于高效的焦油转化至关重要.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 化学循环与氧气脱 (CLOU) 是城市固体废物 (MSW) 管理的低碳技术.
- 在MSW热解气化过程中产生的焦油可能会对氧载体 (OC) 的反应性产生负面影响.
研究的目的:
- 在使用ReaxFF MD模拟的CLOU过程中研究MSW焦油模型化合物 (多,,) 和氧化铜 (CuO) 载体之间的相互作用.
- 了解由CuOOCs引起的焦油裂变和氧化机制.
主要方法:
- 使用阿姆斯特丹建模套件 (AMS) 进行了反应力场分子动力学 (ReaxFF MD) 模拟.
- 制造和优化了MSW焦油化合物和CuO的模型.
- 温度控制是使用一个Nose-Hoover链 (NHC) 恒温器保持的.
主要成果:
- 焦油化合物经历热裂变,由CuO释放的氧基促进.
- 氧显示出高氧化,和氧化到CO2和H2O的高能力,并产生最小的副产品.
- 温度显著影响氧气释放率和CuO的容量.
结论:
- O在完全氧化常见的MSW焦油化合物方面是有效的,这表明它有可能通过CLOU实现MSW高效和清洁的能源利用.
- 该研究通过了解OC-tar相互作用,提供了对优化CLOU技术用于MSW管理的见解.
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