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一个用于以Pd为基础的化以乙烯为丰富的流的动力模型,典型的后等离子体应用
Victor Rosa1, Fabio Cameli2, Yves Schuurman3
1Laboratory for Chemical Technology, Ghent University Tech Lane Ghent Science Park 125 B-9052 Gent Belgium kevin.vangeem@ugent.be.
基于等离子体的甲转换使用纳秒脉冲放电和催化剂有效地产生乙烯. 一个新的动力模型准确地预测了在具有挑战性的,富含乙的后等离子体条件下的性能,以优化催化剂设计.
科学领域:
- 催化剂是一种催化剂.
- 等离子体化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 电气化工艺正在进步,基于等离子体的甲转化对生产高价值化学品越来越感兴趣.
- 纳米秒脉冲排放 (NPD) 与基于 (Pd) 的催化剂相结合,显示出将甲 (CH4) 转化为乙烯 (C2H4) 的前景.
研究的目的:
- 在后等离子体条件下研究基于Pd的催化剂的孤立性能,特别是在新型流组合中.
- 开发一种改进的动力模型,用于在具有挑战性的后等离子体环境中预测催化剂行为.
主要方法:
- 进行了广泛的实验活动,使用与等离子体后条件相关的传统和新型流组成.
- 开发了一种混合稳定状态动力模型,将Langmuir-Hinshelwood-Hougen-Watson (LHHW) 方法与增强的可逆吸附方法相结合.
主要成果:
- 该研究强调了后等离子体化与传统尾端化之间的差异.
- 拟议的混合动力动力模型准确地预测了富含乙和缺乏乙 (C2H4) 的乙烯 (C2H2) 化动力学,其性能优于常规模型.
- 获得了用于优化可扩展的血-olefin路径的催化剂的初步见解.
结论:
- 基于Pd的催化剂显示了通过血过程将CH4转化为C2H4的潜力.
- 新的混合动力模型为特定的后等离子体条件下催化剂性能提供了改进的预测能力.
- 进一步的催化剂优化建议用于可扩展的等离子体-olefin路线的工业应用.
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