Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Effective parameters for DME steam reforming catalysts for the formation of $H_2$ and CO

  • Park, Sung-Yong (Graduate School of Mechanical Engineering, Chonnam National University) ;
  • Kim, Hwa-Nam (School of Mechanical Systems Engineering, Chonnam National University) ;
  • Choi, Byung-Chul (School of Mechanical Systems Engineering, Chonnam National University)
  • Received : 2010.01.21
  • Accepted : 2010.04.14
  • Published : 2010.09.25
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Abstract

Recently, DME has received attention as a clean fuel and is now considered an alternative fuel for diesel engines. DME diesels need de-NOx catalysts such as LNT (Lean NOx Trap) and SCR (Selective Catalytic Reduction) systems. DME is an attractive source of hydrogen because it can be stored easily and is a good transportation fuel. Hydrogen and CO enriched gas as a reductant was used with the LNT catalyst in order to reduce NOx emissions. The steam reforming catalyst of DME was used to formation of hydrogen. It has been reported that Cu-based catalysts have high selectivity and activity in the steam reforming of DME. This research used 600 cPsi cordierite as a catalyst, which was coated with copper. The catalysts were made via a sol-gel and impregnation methods. The formation of $H_2$ and CO under the prepared catalysts was tested by a model gas. Experimental parameters were considered; the space velocity (SV) and concentrations of $H_2O$, $O_2$, and $CO_2$ were evaluated. The Cu 30%/${\gamma}-Al_2O_3$ catalyst from the sol-gel method exhibited high and stable activity in the production of hydrogen from the steam reforming of DME. Both DME conversion and the selectivity of hydrogen were affected by SV and the concentrations of $H_2O$, $O_2$, and $CO_2$.

Keywords

Acknowledgement

Grant : Basic Science Research Program

Supported by : National Research Foundation of Korea (NRF)

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