Abstract In this work, we report on low energy cost methane conversion to ethylene in a hybrid plasma-catalytic reactor system. Methane is first converted to acetylene, reaching up to 23.5% yield per pass, by a nanosecond pulsed discharge (NPD), and subsequently, acetylene is hydrogenated to ethylene using a Pd-based catalyst, which is placed in the post-plasma zone. Overall, ethylene is formed as major product at 25.7% yield per pass, consuming 1642 kJ/molC2H4, which is the lowest energy cost reported for plasma-assisted methane-to-ethylene conversion so far. The two-step process is carried out in a single reactor volume that aside from the discharge energy does not require any heat or hydrogen input since both are provided by methane cracking in the plasma zone itself.

中文翻译：

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混合等离子体催化反应器系统中甲烷到乙烯的低能源成本转化

摘要 在这项工作中，我们报告了混合等离子体催化反应器系统中低能源成本的甲烷转化为乙烯。甲烷首先通过纳秒脉冲放电 (NPD) 转化为乙炔，每次通过的产率高达 23.5%，随后，使用 Pd 基催化剂将乙炔加氢为乙烯，该催化剂放置在后等离子体区。总体而言，乙烯作为主要产物形成，每次通过的产率为 25.7%，消耗 1642 kJ/molC2H4，这是迄今为止报道的等离子体辅助甲烷到乙烯转化的最低能源成本。两步法在单个反应器体积中进行，除了放电能量外，不需要任何热量或氢气输入，因为两者都是通过等离子体区本身的甲烷裂解提供的。