Control of the oxidation state of copper in copper silicate SGU‐29 for efficient catalytic reduction

Abstract

AbstractIn transition metal‐based zeotype systems, engineering transition metal species through ion exchange, doping, and oxidation state control to achieve heterogeneous catalytic systems is considered an effective strategy to improve catalytic performance. Among these strategies, controlling the oxidation state of transition metal species is a promising method to enhance the catalytic properties. Herein, we demonstrate for the first time that zeotypes containing Cu(I) can be effectively generated through the reduction of Cu(II) to Cu(I) in [CuO4]2− in the SGU‐29 framework using a hydrogen/argon gas mixture. Our results showed that reduced SGU‐29 (rSGU‐29) exhibited a high catalytic performance while reducing 4‐nitrophenol, providing 99% conversion.