Andrea Braga, Andrea Felli, Andrea Strazzolini, Maila Danielis, Sara Colussi, Alessandro Trovarelli
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引用次数: 0
Abstract
The Integrated Carbon Capture and Utilization (ICCU) strategy is gaining growing interest as a way to mitigate CO2 emissions and transforming them into useful chemicals in a single reactor. The ICCU approach relies on Dual-Function Materials (DFMs), which combine sorption and catalytic conversion functionalities in one single unit. Here, we systematically explore the role of different alkaline and alkaline-earth cations in determining the microstructural, chemical and catalytic properties of Ru-loaded zirconate perovskites, with alkali elements in the A site, AZrO3, highlighting their impact on performance indicators such as CO2 capture capacity, methanation rate and cyclic stability. The study provides evidence of zirconates-based DFMs being stable and efficient, particularly for Ru/SrZrO3 (CO2 capture: 170 μmol g−1, CH4 production: 111 μmol g−1). Considering that such DFMs are characterized by surface area values one order of magnitude lower than conventional Al2O3-based materials, the Ru/AZrO3 DFMs possess enhanced surface-specific activity compared to state-of-the-art DFMs, underscoring the importance of future microstructural optimization and providing guidance for the rational design of such materials.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.