Plasma coupled electrocatalytic synthesis of ammonia system

Abstract

This invention discloses a plasma-coupled electrocatalytic ammonia synthesis system, comprising an air treatment unit, a plasma generator, a gas cooling unit, an electrocatalytic unit, a separation unit, and an ammonia storage unit connected in sequence. The system employs a technical route of plasma-activated air to produce NOx, followed by electrocatalytic reduction of NOx to synthesize ammonia. The electrocatalytic unit is the core component, with multiple gas channels immersed in an electrolyte solution in its negative electrode region, the channel walls of which are loaded with a high-efficiency Ru-Co / NCNT electrocatalyst; the positive electrode region has an independent conductive tube. The system separates the two electrodes through a proton exchange membrane, achieving operation at ambient temperature and pressure. This invention couples plasma activation and electrocatalytic reduction technologies and integrates a separation and recovery unit, offering advantages such as low energy consumption, high nitrogen conversion rate and ammonia yield, compact process flow, and near-zero carbon emissions, solving the problems of high energy consumption and significant pollution associated with traditional ammonia synthesis technologies.

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