Electric Swing Adsorption (ESA) is a separation process suitable for carbon dioxide (CO₂) capture, but its implementation depends on the development of adsorbents combining good CO₂ uptake and electrical conductivity. Here, we report the 3D printing of electrically conductive hybrid adsorbent structures made of zeolite 13X/activated carbon (Zeo-AC-3D) and zeolite 13X/graphite (Zeo-G-3D), but also of each individual precursor—Zeolite 13X (Zeo-3D), activated carbon (AC-3D), and graphite (G-3D). An extensive characterization of the materials by scanning electron microscopy, thermogravimetric analysis, mercury intrusion, and adsorption measurements is presented. The 3D printed structures have moderately smaller surface area and porosity than their precursor powders, with losses between 21% and 29% for Zeo-3D and Zeo-G-3D. The samples containing activated carbon present smaller losses (4 to 6%). All 3D printed structures exhibit a well-formed macroporous network with slightly larger pore diameter in the case of those generated from nonzeolitic precursors. The ordering of CO₂ adsorption capacity of the 3D printed samples at 0.15 bar and 303 K is the following: Zeo-3D > Zeo-AC-3D > Zeo-G-3D > AC-3D > G-3D. At that pressure the hybrid samples have CO₂ working capacities of 1.03 mol/kg (Zeo-AC-3D) and 0.94 mol/kg (Zeo-G-3D) for adsorption at 303 K and desorption at 373 K. Zeo-G-3D is more efficiently heated by Joule effect than Zeo-AC-3D, attaining 343 K in 22 seconds under action of a 24 V voltage, while the latter only reaches 321 K (in 96 s).

电动摆动吸附 (ESA) 是一种适用于二氧化碳 (CO ₂ ) 捕获的分离工艺，但其实施取决于结合良好 CO ₂的吸附剂的开发吸收和电导率。在这里，我们报告了由沸石 13X/活性炭 (Zeo-AC-3D) 和沸石 13X/石墨 (Zeo-G-3D) 制成的导电混合吸附结构的 3D 打印，以及每种单独的前体——沸石 13X（ Zeo-3D)、活性炭 (AC-3D) 和石墨 (G-3D)。通过扫描电子显微镜、热重分析、压汞和吸附测量对材料进行了广泛的表征。与前体粉末相比，3D 打印结构的表面积和孔隙率略小，Zeo-3D 和 Zeo-G-3D 的损失在 21% 到 29% 之间。含有活性炭的样品损失较小（4% 至 6%）。对于由非沸石前体生成的结构，所有 3D 打印结构都表现出形成良好的大孔网络，孔径略大。CO的排序₂ 3D 打印样品在 0.15 bar 和 303 K 下的吸附容量如下：Zeo-3D > Zeo-AC-3D > Zeo-G-3D > AC-3D > G-3D。在该压力下，混合样品的 CO ₂工作容量为 1.03 mol/kg (Zeo-AC-3D) 和 0.94 mol/kg (Zeo-G-3D)，用于在 303 K 下吸附和在 373 K 下解吸。Zeo-G- 3D 通过焦耳效应比 Zeo-AC-3D 更有效地加热，在 24 V 电压的作用下在 22 秒内达到 343 K，而后者仅达到 321 K（在 96 秒内）。