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) ₄ on the formation of Ni@ZrO ₂ yolk-shell for dry reforming of methane. From XPS analysis, the ZrO ₂ hollow shell texture is demonstrated to be [TEOS]/[Zr(OBu) ₄ ] dependent due to different sizes of SiO ₂ produced. It found that an adequate ratio of [TEOS]/[Zr(OBu) ₄ ] improves the catalytic conversion of dry reforming of methane. It (Ni@ZrO ₂ -SiZr-7.7) shows 90% conversion for CH ₄ and 93% for CO ₂ at a WHSV of 72,000 mLg _cat ^-1 h ^-1 for 50 h at 800 °C with TOF _CH4 of 8.7 s ^-1 . 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.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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