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Selecteve catalytic reduction of NO with CO in the presence of oxygen

Research Project

Project/Area Number 13650841
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 触媒・化学プロセス
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

TANAKA Tsunehiro  Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (70201621)

Co-Investigator(Kenkyū-buntansha) HITOMI Yutaka  Graduate School of Engineering, Research Associate, 工学研究科, 助手 (20335186)
FUNABIKI Takuzo  Graduate School of Engineering, Professor, 工学研究科, 教授 (70026061)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsCu catalyst / alumina / NO reduction / Carbon monoxide / deNOx reaction / XAFS / ESR / auto-reduction
Research Abstract

Since an outbreak of Nox gas in high temperature burning is inevitable, the reduction and/or removal of Nox is strongly requested from the viewpoint of environmental preservation. Although there have been a series of studies aiming at reduction and/or removal of Nox exhausted from diesel engine and lean-burn engine by reduction with hydrocarbons as an reductant, yet any catalysis system has not been used in practice because of the dependence of activity upon the kind of hydrocarbon and because of the catalyst life. In the present study, we attempted to develop the Nox removal SCR system with CO as a reductant, Cu/Al203 exhibits as high catalytic activity in the presence of oxygen as Rh/A1203, a model three-way catalyst, and higher activity in the region of lean-burn than Rh/A1203. In the term of project, we have found out the correlation between catalyst state and activity in the lean-burn condition and carried out the optimization of the catalyst. Catalytic activity varied with the loading of Cu and 1 wt% loaded catalyst exhibited the highest activity. But 0.25 wt% loaded catalyst exhibited highest TOF (turn-over-frequency) . ESR and XAFS showed that Cu species which is sintered by high temperature treatment exhibits high activity for CO oxidation resulting in the prevention from NO reduction. The Cu species effective for NO reduction was found to be highly dispersed mononuclear Cu species which is dominant species in 0.25 wt% loaded catalyst TPR spectral features of this catalyst showed that this Cu species is hardly reduced and the H2 reduction at higher than 1000 K does not bring about the formation of metallic Cu but monovalent Cu. The auto-reduction of this Cu species was observed by ESR and photoluminescence and reduced Cu is easily re-oxidized by NO but hardly re-oxidized by O2.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Tomohiro Ishizuka: "Effect of Calcium Sulfate Addition on the Activity of the Absorbent for Dry Flue Gas Desulfurization"Energy & Fuels. 15. 438-443 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Cu/Al2O3(3)"Topic Catal.. 18. 113-118 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Al2O3-Supported and Cu-based Catalysts"Phys.Chem.Chem.Phys.. 4. 2449-2458 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yasutaka Nagai: "X-ray absorption fine structure analysis of local structure of CeO2-ZrO2 mixed oxides with the same composition ratio (Ce/Zr=1)"Catal.Today. 74. 225-234 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tsunehiro Tanaka: "Photoassisted NO reduction with NH3 over TiO2 photocatalyst"Chem.Commun.. 2742-2743 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田中庸裕: "SPirng-8ベンディングマグネットビームラインでのXAFS"理学電気ジャーナル. 33. 42-47 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tomohiro Ishizuka: "Effect of Calcium Sulfate Addition on the Activity of the Absorbent for Dry Flue Gas Desulfurzation"Energy & Fuels. 15. 438-443 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Cu/A1203 (3)"Topics in Catalysis. 18. 113-118 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over A1203-supported and Cu-based Catalysts"Physical Chemistry Chemical Physics. 4. 2449-2458 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yasutaka Nagai: "X-ray absorption fine structure analysis of local structure of CeO2-ZrO2 mixed oxides with the same composition ratio (Ce/Zr = 1)s"Catalysis Today. 74. 2225-2234 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tsunehiro Tanaka: "Photoassisted NO reduction with NH3 over TiO2 photocatalyst"Chemical Communications. 2742-2743 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tsunehiro Tanaka: "XAFS at the bending magnet beam line of Sping-8"The Rigaku-Denki Journal. 35. 2742-2743 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tomohiro Ishizuka: "Effect of Calcium Sulfate Addition on the Activity of the Absorbent for Dry Flue Gas Desulfurization"Energy & Fuels. 15. 438-443 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Cu/Al203 (3)"Topic Catal.. 18. 113-118 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Al203-supported and Cu-based Catalysts"Phys. Chem. Chem. Phys.. 4. 2449-2458 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yasutaka Nagai: "X-ray absorption fine structure analysis of local structure of CeO2-ZrO2 mixed oxides with the same composition ratio (Ce/Zr=1)"Catal. Today. 74. 225-234 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tsunehiro Tanaka: "Photoassisted NO reduction with NH3 over TiO2 photocatalyst"Chem. Commun.. 2742-2743 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田中庸裕: "SPirng-8ベンディングマグネットピームラインでのXAFS"理学電気ジャーナル. 33. 42-47 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Cu/Al203(3)"Topic Catal.. 18. 113-118 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tomohiro Ishizuka: "Effect of Calcium Sulfate Addition on the Activity of the Absorbent for Dry Flue Gas Desulfurization"Energy & Fuels. 15. 438-443 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Takashi Yamamoto: "NO Reduction with CO in the Presence of O2 over Al2O3-supported and Cu-based Catalysts"Phys. Chem. Chem. Phys.. 4(印刷中). (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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