Centre for Materials and Drug Discovery, Institute of Chemistry, Faculty of Science and Technology, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
Scientific and Didactic Laboratory of Nanotechnology and Material Technologies, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland.
Int J Mol Sci. 2023 Mar 1;24(5):4729. doi: 10.3390/ijms24054729.
The paper introduces spatially stable Ni-supported bimetallic catalysts for CO methanation. The catalysts are a combination of sintered nickel mesh or wool fibers and nanometal particles, such as Au, Pd, Re, or Ru. The preparation involves the nickel wool or mesh forming and sintering into a stable shape and then impregnating them with metal nanoparticles generated by a silica matrix digestion method. This procedure can be scaled up for commercial use. The catalyst candidates were analyzed using SEM, XRD, and EDXRF and tested in a fixed-bed flow reactor. The best results were obtained with the Ru/Ni-wool combination, which yields nearly 100% conversion at 248 °C, with the onset of reaction at 186 °C. When we tested this catalyst under inductive heating, the highest conversion was observed already at 194 °C.
本文介绍了用于 CO 甲烷化的空间稳定镍负载双金属催化剂。这些催化剂是由烧结的镍网或羊毛纤维与纳米金属颗粒（如 Au、Pd、Re 或 Ru）组成的。制备过程包括将镍羊毛或网形成并烧结成稳定的形状，然后用硅酸钠基质消解法生成的金属纳米颗粒进行浸渍。该方法可用于扩大商业应用。使用 SEM、XRD 和 EDXRF 对催化剂候选物进行了分析，并在固定床流动反应器中进行了测试。在 Ru/Ni-wool 组合中获得了最佳结果，在 248°C 下几乎达到 100%的转化率，反应起始温度为 186°C。当我们在感应加热下测试这种催化剂时，在 194°C 时就观察到了最高的转化率。
