Figueroa-Quintero Leidy, Cordero-Lanzac Tomás, Ramos-Fernandez Enrique V, Olsbye Unni, Narciso Javier
Inorganic Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University of Alicante, 03080 Alicante, Spain.
SMN Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelands Vei 26, 0371 Oslo, Norway.
Molecules. 2025 Mar 25;30(7):1458. doi: 10.3390/molecules30071458.
Copper nanoparticles have been integrated onto the framework of modified NH-MIL-125(Ti), a metal-organic framework (MOF), and evaluated as catalysts for converting CO into valuable products. The modified MOF was achieved through a post-synthetic modification process involving the partial replacement of titanium with zirconium or cerium within the MOF's structure. The objective behind this alteration is to create a synergistic effect between the MOF, serving as a support matrix, and the embedded copper nanoparticles, thereby enhancing the performance of the catalyst. The obtained catalysts were characterized and evaluated in the hydrogenation of CO to methanol under different experimental conditions, reaching CO conversions of up to 5%, with a selectivity towards methanol that reached values of up to 60%. According to the obtained results, the catalyst composed of Ti, Zr and Cu stood out for having the highest CO conversion and selectivity towards methanol, in addition to practically inhibiting the production of methane. These results demonstrate that the interaction of the framework with the Cu nanoparticles, and thus its catalytic properties, can be changed by modifying the properties of the MOF.
铜纳米颗粒已被整合到改性NH-MIL-125(Ti)（一种金属有机框架材料，简称MOF）的框架上，并被评估为将CO转化为有价值产品的催化剂。改性MOF是通过合成后修饰过程实现的，该过程涉及在MOF结构中用锆或铈部分替代钛。这种改变背后的目的是在作为支撑基质的MOF和嵌入的铜纳米颗粒之间产生协同效应，从而提高催化剂的性能。所获得的催化剂在不同实验条件下进行了CO加氢制甲醇的表征和评估，CO转化率高达5%，对甲醇的选择性高达60%。根据所得结果，由Ti、Zr和Cu组成的催化剂表现突出，除了几乎抑制甲烷的生成外，还具有最高的CO转化率和对甲醇的选择性。这些结果表明，通过改变MOF的性质，可以改变框架与铜纳米颗粒的相互作用，进而改变其催化性能。
