Partial oxidation of dimethyl ether using the structured catalyst Rh/Al 2O 3/Al prepared through the anodic oxidation of aluminum

B. Y. Yu, K. H. Lee, K. Kim, D. J. Byun, H. P. Ha, J. Y. Byun

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The partial oxidation of dimethyl ether (DME) was investigated using the structured catalyst Rh/Al 2O 3/Al. The porous Al 2O 3 layer was synthesized oe n n the aluminum plate through anodic oxidation in an oxalic-acid solution. It was observed that about 20 nm nanopores were well developed in the Al 2O 3 layer. The thickness of Al 2O 3 layer can be adjusted by controlling the anodizing time and current density. After pore-widening and hot-water treatment, the Al 2O 3/Al plate was calcined at 500 °C for 3 h. The obtained γ-Al 2 10 3 had a specific surface area of 160 m 2/g, making it fit to be used as a catalyst support. A microchannel reactor was designed and fabricated to evaluate the catalytic activity of Rh/Al 2O 3/Al in the partial oxidation of DME. The structured catalyst showed an 86% maximum hydrogen yield at 450 °C. On the other hand, the maximum syngas yield by a pack-bed-type catalyst could be attained by using a more than fivefold Rh amount compared to that used in the structured Rh/Al 2O 3/Al catalyst.

Original languageEnglish
Pages (from-to)6298-6305
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number7
DOIs
Publication statusPublished - 2011 Jul

Keywords

  • Anodic Oxidation
  • DME
  • Partial-Oxidation Reforming
  • Rh/Al O /Al
  • Structured Catalyst

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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