Co-Ni/MOF-74 catalyst packed-bed DBD plasma for ammonia synthesis

Abstract

Nonthermal plasma (NTP) provides a potential and sustainable route for the synthesis of ammonia. In this work, a Co–Ni/MOF-74 catalyst was developed to synthesize ammonia from N2 and H2 in a dielectric barrier discharge (DBD) plasma at low temperature and atmospheric pressure. Co–Ni/MOF-74 showed the highest ammonia synthesis rate up to 2608.70 μmol g−1 h−1 at 200°C, with V(N2):V(H2) ratio of 1:1 and specific energy input of 33.27 kJ L−1. The catalytic activity was increased by 19.57% for Co–Ni/MCM-41 and 375% for Co-Ni/Al2O3, respectively. It was observed that the average electric field (E) and power efficiency were enhanced while adding Co–Ni/MOF-74 to the reaction system.