In this study, we have developed a Ru/K₂CO₃–MgO (Ru/KMg) catal-sorbent for integrated CO₂ capture and methanation (ICCM) at low temperatures. The Ru primarily existed as a K₂RuO₃ phase, which was not observed after reduction at 400 °C. In addition, the crystallite size of Ru⁰ is smaller than that of Ru/MgO because Ru species as K₂RuO₃ phase, instead of RuO₂, is dispersed well throughout the MgO support material. Here, the CO₂ capture and regeneration properties of Ru/KMg catal-sorbents after carbonation at different temperatures (60, 120, 150, and 320 °C) were studied under N₂ or H₂ conditions, respectively. The optimal carbonation temperature was 150 °C when considering 100% CO₂ conversion to CH₄. 20 consecutive cycles of ICCM were conducted at 150 °C for carbonation (10 vol% CO₂ and 10 vol% H₂O) and 320 °C for methanation (90 vol% H₂). The results showed stable CH₄ productivities of 1.07–1.19 mmol CH₄/g with 100% CH₄ selectivity and 96.2%–101.3% CH₄ yield.

在这项研究中，我们开发了一种 Ru/K ₂ CO ₃ –MgO (Ru/KMg) 催化吸附剂，用于在低温下集成 CO _{2捕获和甲烷化 (ICCM)。}Ru 主要以 K ₂ RuO ₃相存在，在 400 °C 还原后未观察到。此外，Ru ⁰的微晶尺寸小于Ru/MgO的微晶尺寸，因为作为K ₂ RuO ₃相的Ru物质，而不是RuO ₂，​​很好地分散在整个MgO载体材料中。在此，研究了在不同温度（60、120、150 和 320 °C）下碳酸化后 Ru/KMg 催化剂吸附剂在 N2 下的CO _{2捕获和再生性能2}或 H ₂条件，分别。_{当考虑将 100% CO 2}转化为 CH ₄时，最佳碳酸化温度为 150 °C 。在 150 °C 进行碳酸化（10 vol% CO ₂和 10 vol% H ₂ O）和 320 °C 进行甲烷化（90 vol% H ₂）的条件下进行 20 个连续的 ICCM 循环。结果显示稳定的 CH ₄生产率为 1.07–1.19 mmol CH _{4 /g，CH 4}选择性为 100% ，CH ₄产率为 96.2%–101.3%。