Abstract

Synergistic effects of pulsed DC dielectric barrier discharge (DBD) plasma and Indium modified HZSM-5 (In/HZSM-5) catalyst for C2H2 selective reduction of NOx at 200°C, in the presence of enriched oxygen by using a one-stage plasma-over-catalyst (POC) reactor, are reported. With a reactant gas mixture of 480 ppm NO, 500 ppm C2H2, 13.0% O2 in N2 and gas hourly space velocity (GHSV) = 10000 h−1, pure catalytic, pure plasma-induced (discharges over fused silica pellets) and plasma-catalytic NOx conversion percentages are 45.0%, 4.0% and 92.2%, respectively. NOx conversion rates and energy costs were also compared for pulsed DC DBD and AC DBD reactors.

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