Ni@ZrO 2 yolk-shell catalyst for CO 2 methane reforming: Effect of Ni@SiO 2 size as the hard-template

This paper reports the usage ratio of TEOS and Zr(OBu) on the formation of Ni@ZrO yolk-shell for dry reforming of methane. From XPS analysis, the ZrO hollow shell texture is demonstrated to be [TEOS]/[Zr(OBu) ] dependent due to different sizes of SiO produced. It found that an adequate ratio of [TEOS]/[Zr(OBu) ] improves the catalytic conversion of dry reforming of methane. It (Ni@ZrO -SiZr-7.7) shows 90% conversion for CH and 93% for CO at a WHSV of 72,000 mLg h for 50 h at 800 °C with TOF of 8.7 s . It proposed that the changes in surface Si/Zr and gradual interconnecting pores contributed to its activity and stability. These finding's potential to be utilized in other high-temperature reactions.