Plasma-Based N2 Fixation into NOx: Insights from Modeling toward Optimum Yields and Energy Costs in a Gliding Arc Plasmatron,ACS Sustainable Chemistry & Engineering

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Plasma-Based N2 Fixation into NOx: Insights from Modeling toward Optimum Yields and Energy Costs in a Gliding Arc Plasmatron
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-06-04 , DOI: 10.1021/acssuschemeng.0c01815
Elise Vervloessem ₁ , Maryam Aghaei ₁ , Fatme Jardali ₁ , Neda Hafezkhiabani ₁ , Annemie Bogaerts ₁

Affiliation

Plasma technology provides a sustainable, fossil-free method for N₂ fixation, i.e., the conversion of inert atmospheric N₂ into valuable substances, such as NO_x or ammonia. In this work, we present a novel gliding arc plasmatron at atmospheric pressure for NO_x production at different N₂/O₂ gas feed ratios, offering a promising NO_x yield of 1.5% with an energy cost of 3.6 MJ/mol NO_x produced. To explain the underlying mechanisms, we present a chemical kinetics model, validated by experiments, which provides insight into the NO_x formation pathways and into the ambivalent role of the vibrational kinetics. This allows us to pinpoint the factors limiting the yield and energy cost, which can help to further improve the process.

中文翻译：

基于等离子体的N ₂固定到NO _x中：滑动等离子等离子体中从建模到最佳产量和能源成本的见解

等离子体技术为N _2的固定提供了一种可持续的，无化石的方法，即将惰性大气中的N ₂转化为有价值的物质，例如NO _x或氨。在这项工作中，我们提出了一种新型的大气压滑弧等离子加速器，用于在不同的N ₂ / O ₂气体进料比下生产NO _x，提供了有希望的1.5％NO _x产率和3.6 MJ / mol NO _x产生的能源成本。为了解释潜在的机理，我们提供了一个化学动力学模型，该模型已通过实验验证，可提供对NO _x的深入了解形成途径并进入振动动力学的矛盾作用。这使我们能够查明限制产量和能源成本的因素，从而有助于进一步改善工艺。

更新日期：2020-07-06

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