Oxidation of CH<SUB>4</SUB> and CO<SUB>2</SUB> Reforming of CH<SUB>4</SUB> over Rh/ZrO<SUB>2</SUB> Catalysts with Different Metal Dispersions

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  • ITO Shin-ichi
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan
  • NAGASHIMA Ken
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan
  • ARAKI Ryo
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan
  • YARIMIZU Takayoshi
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan
  • KAMEOKA Satoshi
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan
  • KUNIMORI Kimio
    Institute of Materials Science, University of Tsukuba; Tsukuba-shi 305-8573 Japan

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Other Title
  • 分散度制御したZrO<SUB>2</SUB>担持Rh触媒によるCH<SUB>4</SUB>酸化反応およびCH<SUB>4</SUB>のCO<SUB>2</SUB>リホーミング反応
  • 分散度制御したZrO2担持Rh触媒によるCH4酸化反応およびCH4のCO2リホーミング反応
  • ブンサンド セイギョ シタ ZrO2 タンジ Rh ショクバイ ニ ヨル CH4 サンカ ハンノウ オヨビ CH4 ノ CO2 リホーミング ハンノウ
  • Oxidation of CH4 and CO2 Reforming of CH4 over Rh/ZrO2 Catalysts with Different Metal Dispersions.

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Abstract

Oxidation of CH4 under lean condition(800ppm) and CO2 reforming of CH4 were carried out using Rh/ZrO2 catalysts with different metal dispersions. It was found that both reactions showed a similar structure-sensitive behavior: The TOF decreased with increasing of Rh dispersion. It is suggested that the rate determining step is dissociative adsorption of CH4 for both reactions, and strong Rh-O bonds in smaller Rh crystallites may lead to a suppression of the dissociative adsorption of CH4 on the Rh surface.

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