Disk-type porous Ni-Cr bulk catalyst for hydrogen production by autothermal reforming of methane

Sung Ho Kim, Ji Hye Chung, Yun Tae Kim, Jonghee Han, Sung Pil Yoon, Suk Woo Nam, Tae Hoon Lim, Ho In Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Autothermal reforming of methane, which is combined of steam reforming and partial oxidation, was carried out with a disk-type porous Ni-Cr bulk catalyst in various reaction conditions. Although high methane conversion could be obtained by controlling reaction conditions such as reaction temperature, O2/C ratio, and S/C ratio, the optimal condition for maximal H2 and CO generation was shown at a different reaction condition, because H2 and CO were products of partially oxidized methane. The activity of porous Ni-Cr bulk catalyst was well maintained for On-Off test and 260 h operation of ATR. The deactivation of a reforming catalyst has generally been caused by the carbon deposition on the active site of Ni. In the case of bulk Ni, however, the oxidation of Ni was an inevitable and severe problem in the autothermal reforming of methane. An interesting fact was observed during On-Off test, which was named a bounce phenomenon in this work. It was caused by oxidation of Ni for On-Off process and the transient reduction of the oxidized Ni catalyst in ATR reaction.

Original languageEnglish
Pages (from-to)96-102
Number of pages7
JournalCatalysis Today
Volume146
Issue number1-2
DOIs
Publication statusPublished - 2009 Aug 15

Keywords

  • ATR
  • Disk-type catalyst
  • Methane reforming
  • Ni bulk catalyst
  • On-Off test

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Kim, S. H., Chung, J. H., Kim, Y. T., Han, J., Yoon, S. P., Nam, S. W., Lim, T. H., & Lee, H. I. (2009). Disk-type porous Ni-Cr bulk catalyst for hydrogen production by autothermal reforming of methane. Catalysis Today, 146(1-2), 96-102. https://doi.org/10.1016/j.cattod.2009.01.042