Preparation and Characterization of Co-Modified Bimetallic MOF-74-NiCo as an Efficient Catalyst for Low Temperature CO-SCR

In this study, a series of Co-modified bimetallic MOF-74-Ni1Cox(x = 1, 2, 4, 6, 8) catalysts were successfully prepared by a hydrothermal method and applied for CO-SCR. Bimetallic MOF-74-NiCo catalysts exhibited higher catalytic activity than pure Ni-MOF-74 material. It was found that MOF-74-Ni1Co6 catalyst achieved a more than 98% NO conversion from 200 °C to 300 °C. This enhanced CO-SCR performance of MOF-74-NiCo catalysts were ascribed to the formation of more oxygen vacancies and strong synergistic interaction between Co and Ni ions. The feasibility of bimetallic MOF-74-NiCo as a promising DeNOx catalyst was evaluated in this work.