Trierweiler Gonçalves Gabriel, Michelin Laure, Josien Ludovic, Paillaud Jean-Louis, Chaplais Gérald
Université de Haute-Alsace, CNRS, Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361, Axe Matériaux à Porosité Contrôlée (MPC), F-68100 Mulhouse, France.
Université de Strasbourg, F-67000 Strasbourg, France.
Molecules. 2023 Sep 22;28(19):6753. doi: 10.3390/molecules28196753.
The employment of metal-organic frameworks in powder form is undesirable from an industrial perspective due to process and safety issues. This work is devoted to evaluating the impact of compression on the textural and structural properties of CPO-27(Ni). For this purpose, CPO-27(Ni) was synthesized under hydrosolvothermal conditions and characterized. Then, the resulting powder was compressed into binderless pellets using variable compression forces ranging from 5-90 kN (37-678 MPa) and characterized by means of nitrogen adsorption/desorption, thermogravimetric analysis and powder X-ray diffraction to evaluate textural, thermal and structural changes. Both textural and structural properties decreased with increasing compression force. Thermal stability was impacted in pellets compressed at forces over 70 kN. CPO-27(Ni) pelletized at 5, 8 and 10 kN, and retained more than 94% of its initial textural properties, while a loss of about one-third of the textural property was observed for the two most compressed samples (70 and 90 kN) compared to the starting powder.
从工业角度来看，由于工艺和安全问题，粉末形式的金属有机框架材料的应用并不理想。这项工作致力于评估压缩对CPO-27（Ni）的织构和结构性能的影响。为此，在水热溶剂热条件下合成了CPO-27（Ni）并进行了表征。然后，使用5-90 kN（37-678 MPa）的可变压缩力将所得粉末压制成无粘结剂颗粒，并通过氮吸附/解吸、热重分析和粉末X射线衍射进行表征，以评估织构、热和结构变化。织构和结构性能均随压缩力的增加而降低。在超过70 kN的力下压缩的颗粒的热稳定性受到影响。在5、8和10 kN下制粒的CPO-27（Ni）保留了其初始织构性能的94%以上，而与起始粉末相比，两个压缩程度最高的样品（70和90 kN）的织构性能损失了约三分之一。
