Recent progress on low-temperature selective catalytic reduction of NOx by NH3 based on MOF-derived materials: A review

Abstract

Selective catalytic reduction of nitrogen oxides (NOx) using ammonia (NH3) is an effective method to reduce NOx emissions from stationary and mobile sources. In this paper, the research progress of MOF derivatives in NH3-SCR reaction in recent years is summarized, focusing on three major aspects, namely, the synthesis of MOF derivatives, the reaction mechanism, and the application of MOF derivatives in NH3-SCR reaction. In terms of the synthesis of MOF derivatives, various synthesis methods are systematically reviewed to improve the MOF materials and thus the performance of SCR reaction. In terms of reaction mechanism, MOF derivatives were designed and modified to improve the catalytic activity, adsorption and tolerance of NH3-SCR reaction. In addition, the system analyzed the catalytic efficiency and anti-poisoning performance of metal derivatives, carbon-based derivatives, and composite derivatives, with a focus on their catalytic efficiency, anti-poisoning capability, and thermal stability. Finally, the future development potential and directions of metal-organic framework derivative catalysts in NH3-SCR reactions were explored.