Abstract：
The paper introduces spatially stable Ni-supported bimetallic catalysts for CO2 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.
摘要：
本文介绍了用于CO2甲烷化的空间稳定的Ni负载双金属催化剂。催化剂是烧结镍网或羊毛纤维和纳米金属颗粒的组合，比如Au,Pd,Re,或者Ru.该制备涉及镍棉或网形成并烧结成稳定的形状,然后用通过二氧化硅基质消化方法产生的金属纳米颗粒浸渍它们。该程序可以扩大用于商业用途。使用SEM分析催化剂候选物,XRD,和EDXRF，并在固定床流动反应器中进行了测试。用Ru/Ni-羊毛组合获得最佳结果，在248°C时转化率接近100%，反应在186℃开始。当我们在感应加热下测试这种催化剂时，在194°C时已经观察到最高的转化率。
