Highly stable nanofibrous La2NiZrO6 catalysts for fast methane partial oxidation

Yuyao Ma, Yuxia Ma, Yang Chen, Shishuai Ma, Qinggang Li, Xun Hu, Zhi Wang, C. E. Buckley, Dehua Dong

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

Exothermic methane partial oxidation requires catalysts with thermal stability to cope with hot spot formation and oxidation-resistance to retain activity in the presence of oxygen. This study has demonstrated highly stable nanofibrous La2NiZrO6 catalysts for syngas production through methane partial oxidation. La2NiZrO6 perovskite catalysts showed catalytic activity without reduction so as to retain catalytic activity during the reaction. A thermally stable fibrous structure enables the enhancement of La2NiZrO6 crystallinity via calcination at high temperatures to achieve high catalytic activity. In addition, catalyst activity can be readily improved via reducing the diameter of catalyst fibers, which can be achieved through adjusting the electrospinning process. Moreover, syngas yield was increased with gas space velocity, which may be attributed to the increased local temperatures. The cyclic stability of the nanofibrous catalysts during methane reforming was confirmed. Therefore, the thermally stable nanofibrous La2NiZrO6 catalysts have the potential to generate high syngas yields through fast methane partial oxidation.

Original languageEnglish
Article number116861
Number of pages7
JournalFuel
Volume265
DOIs
Publication statusPublished - 1 Apr 2020
Externally publishedYes

Keywords

  • Crystallinity
  • LaNiZrO perovskite
  • Methane partial oxidation
  • Nanofibrous catalysts
  • Stability

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