Direct Conversion of Blast Furnace Gas to Dimethyl Ether over Cu-ZnO-Ga2O3/.GAMMA.-Al2O3 Hybrid Catalyst: Optimum Mass Ratio of the Catalyst.

• Machida Satoshi

  Graduate School, Tohoku University

• Akiyama Tomohiro

  Institute for Advanced Materials Processing, Tohoku University

• Muramatsu Atsushi

  Institute for Advanced Materials Processing, Tohoku University

• Yagi Jun-ichiro

  Institute for Advanced Materials Processing, Tohoku University

抄録

The objective of this study is to develop a catalyst in a packed-bed reactor for direct synthesis of dimethyl ether ((CH₃)₂O, DME) from blast furnace offgas (CO-CO₂-H₂-N₂, BFG). Physically-admixed (hybrid) catalysts of Cu-ZnO-Ga₂O₃ for CH₃OH synthesis and γ-Al₂O₃ for its dehydration were experimentally studied, in which the influence of mixing ratio of the two catalysts on both yield and selectivity of DME was mainly examined for the same catalyst mass. The results showed that the developed hybrid catalyst is very effective in producing DME directly from BFG without equilibrium limit of methanol. Interestingly, the yield of DME had a significant dependence of mixing ratio, and the hybrid catalyst with only 5 mass% γ-Al₂O₃ showed the highest yield with 99.3 % selectivity of DME+methanol. This implies that methanol formation governs the rate of this series reaction (BFG→CH₃OH→DME) due to fast dehydration of methanol to DME.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 37 (5), 531-535, 1997

  一般社団法人 日本鉄鋼協会

キーワード

• ironmaking
• blast furnace
• dimethyl ether
• methanol
• catalyst
• γ-Al₂O₃
• dehydration

詳細情報

• CRID: 1390282681429546496
• NII論文ID: 10002455848
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.37.531
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/37/5/37_5_531/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可