Division of Materials and Environmental Chemistry , Stockholm University , Frescativägen 8 , 10691 Stockholm , Sweden.
Department of Chemistry and Chemical Engineering, Applied Chemistry , Chalmers University of Technology , SE-41296 Gothenburg , Sweden.
ACS Appl Mater Interfaces. 2019 Oct 30;11(43):40424-40431. doi: 10.1021/acsami.9b11399. Epub 2019 Oct 17.
Microporous (<2 nm) crystalline aluminosilicates in the form of zeolites offer a great potential as efficient adsorbents for atmospheric CO in the eminent battle against global warming and climate change. The processability of conventional zeolite powders is, however, poor, which limits their implementation in many applications, such as in gas filtration industrial systems. In this work, we overcome this issue through the preparation of hybrid foams using mesoporous/macroporous supporting materials based on the strong network properties of gelatin/nanocellulose, which can support ultrahigh loadings of silicalite-1, used as a model sorbent nanomaterial. We achieved up to 90 wt % of zeolite content and a microporous/mesoporous/macroporous hybrid material. The application of hybrid foams for selective CO sorption exhibits a linear relationship between the zeolite content and CO adsorption capacity and high selectivity over N, where the gelatin/nanocellulose foam efficiently supports the zeolite crystals without apparently blocking their pores.
微孔（<2nm）结晶硅铝酸盐沸石作为高效吸附剂，在应对全球变暖和气候变化的艰巨战斗中具有巨大潜力。然而，传统沸石粉末的加工性能较差，限制了其在许多应用中的实施，例如在气体过滤工业系统中。在这项工作中，我们通过使用基于明胶/纳米纤维素强网络特性的中孔/大孔支撑材料制备杂化泡沫来克服这一问题，该支撑材料可支撑作为模型吸附纳米材料的 silicalite-1 的超高负载量。我们实现了高达 90wt%的沸石含量和微孔/中孔/大孔杂化材料。杂化泡沫在选择性 CO 吸附中的应用表明，沸石含量与 CO 吸附容量之间存在线性关系，并且对 N 具有高选择性，其中明胶/纳米纤维素泡沫有效地支撑沸石晶体，而不会明显堵塞其孔。
