Solid sorbents have attracted extensive research attention for enhanced adsorption of effluent CO₂. A Dual Functional Material (DFM), composed of a CO₂ adsorbent (“Na₂O” derived from hydrogenated Na₂CO₃) in combination with Ru both supported on the same Al₂O₃, overcome limitations of traditional sorbent technology. It captures CO₂ from a simulated flue gas and catalytically converts it to synthetic natural gas (CH₄) in the same reactor and temperature utilizing H₂ generated from renewable sources. The methane produced is recycled to the plant inlet for repeated combustion maintaining a closed carbon loop. The process is envisioned to operate with parallel reactors, containing DFM, where one captures CO₂ and the other methanates and vis versa for continuous operation. We report parametric, cyclic aging and characterization studies in a simulated natural gas power plant flue gas using 10 g of 5 mm × 5 mm tablet DFM. This material shows stable CO₂ capture and conversion to CH₄ performance for over 50 adsorption and conversion aging cycles (equivalent to 80 h of operation) with no loss in BET surface area, CO₂ capture capacity nor Ru dispersion.

固体吸附剂对提高废水CO _2的吸附作用已引起广泛的研究关注。的双重功能材料（DFM），一个CO组成的₂吸附剂（“娜₂ O”的从氢化钠衍生₂ CO ₃）在结合的Ru既支撑在相同的Al ₂ ö ₃，克服了传统吸附剂技术的局限性。它从模拟烟道气中捕获CO ₂，并在同一反应器中利用H ₂将其催化转化为合成天然气（CH ₄）。由可再生资源产生。产生的甲烷被循环到设备的入口进行重复燃烧，从而保持封闭的碳回路。设想该方法将与包含DFM的平行反应器一起运行，其中一个反应器捕获CO ₂和另一个甲烷化物，反之亦然，以实现连续操作。我们报告了使用10克5毫米×5毫米平板电脑DFM在模拟天然气电厂烟道气中进行的参数化，循环老化和表征研究。该材料在超过50个吸附和转化老化周期（相当于80小时的运行）中显示出稳定的CO ₂捕获和转化为CH _4的性能，且没有BET表面积，CO ₂捕获能力或Ru分散的损失。