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Development of Phototalytic Process for Selective Oxidation of Alkansor

Research Project

Project/Area Number 08555197
Research Category

Grant-in-Aid for Scientific Research (A)

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

Principal Investigator

YOSHIDA Satohiro  Kyoto University, Engineering, Professor, 工学研究科, 教授 (00025933)

Co-Investigator(Kenkyū-buntansha) TANAKA Tsunehiro  Kyoto University, Engineering, Associate Professor, 工学研究科, 助教授 (70201621)
FUNABIKI Takuzo  Kyoto University, Engineering, Associate Professor, 工学研究科, 助教授 (70026061)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1996: ¥5,500,000 (Direct Cost: ¥5,500,000)
Keywordsalkane oxidation / photocatalysis / reaction process / alkali-ion promotor / silica / vandum oxide / propane / isobutane / アルカン酸化 / バナジウム / 酸化チタン / アルカリイオン
Research Abstract

The addition of alkali ions to V_2O_5/SiO_2 enhances catalytic activity as well as changes the effective wavelengh ; excited by irradiation with the light lambda>400 nm. The reactivity of the surface species interacting with Rb ions in the photo-oxidation of isobutane has been investigated to clarify the mechanism of photooxidation of alkanes. Acetone and C_4-compounds were formed. The most striking point is the formation of tert-butyl alcohol over the Rb^+-modified catalyst. A tracer study with ^<18>O_2 showed that oxygen atoms incorporated into tert-butyl alcohol were from gaseous oxygen, whereas acetone contained ^<16>O which originated from the lattice oxygen in the catalyst. The quantum chemical calculations of the active species were carried out and we found that the position of the excited positive hole is different between alkali-ion-doped and undoped samples, which corresponds to the difference of excitation energy. The continuous flow reactor was tested for the oxidation system. The conversion was 1.2% and the selectivity to acetone was found to be 70%. The catalyst deactivation could not be seen for 8-hours duration.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Tsunehiro Tanaka: "Photo-assisted Oxidation of 2-Methylpropance over Rb^+-Modfied V_2O_5/SiO_2 Formation of 2-Methylpropan-2-ol from 2-Methylpropane and O_2" J.Chem.Soc.,Faralay Trans.92. 1975-1979 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tanaka: "XAFS Study of Niobium Oxide on Alumina" Catal.Today. 28. 71-78 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Satohiro Yoshida: "Highly Dispersed Titanium Oxide on SilLca : Preparation,Characterization by XAFS and Photocatalysis" Proc.11th Intern.Congr.Catol.871-880 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 吉田 さと弘: "高分散担持酸化物触媒のXAFS" 表面科学. 18. 21-28 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Satohiro Yoshida: "Ultra Highly Dispersed Titanium Oxide on SiLica : Effect of Precursors on the Structure and Photocatalysis" J.Phys.IV(colloque C_2). 7. 859-861 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tanaka: "Olefin Metathesis over UV-lrradiated Silica" Appl.Surf.Sci.121/122. 296-300 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Tsunehiro Tanaka: "Photo-assisted Oxidation of 2-Methyl-Propane over Rb^+-Modified V_2O_5/SiO_2, Formation of 2-Methylpropan-2-ol from 2-Methylpropane and O_2" J.Chem.Soc., Faraday Trans.92. 1975-1979 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tanaka: "XAFS Study of Niobium Oxide on Alumina" Catal.Today. 28. 71-78 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Satohiro Yoshida: "Highly Dispersed Titanium Oxide on Silica. Preparation, Characterization by XAFS and Photocatalysis" Proc.11th Intern.Congr.Catal. 871-880 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Satohiro Yoshida: "XAFS of Photocatalysts Comprized of Highly Dispersed Metal Oxides on Supports" Hyomen Kagaku. 18. 21-28 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Satohiro Yoshida: "Ultra Highly Dispersed Titanium Oxide on Silica : Effect of Precursors on the Struclure and Photocatalysis" J.Phys.IV (colloque C_2). 7. 859-861 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tanaka: "Olefin Metathesis over UV-Irradiated Silica" Appl.Surf.Sci.121/122. 296-300 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 吉田郷弘: "高分散担持酸化物触媒のXAFS" 表面科学. 18. 21-28 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Tanaka: "Olefin Metathesis over UV-lrradiated Silica" Appl.Surf.Sci.121/122. 296-300 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Takenaka: "Selective Partial Oxidation of Light Alkanes over Alkali-Ion-Modified Silica-supported Vanadium Oxides Excited with Visibb Light" Catal.Lett.44. 67-74 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Tanaka et al.: "Photoassisted Oxidation of 2-Methylpropane over Rb^+-Modified V_2O_5/SD_2" J.Chem.Soc.,Faraday Trans.92. 1975-1979 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Yoshida et al.: "Highly Dispersed Titanium Oxide on Silica" Proc.11th Intern.Congr.Catal. 871-880 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Takenaka et al.: "Selective Partial Oxidation of Light Alkanes over Alkali-Ion-Modified Silica-supporeed Vanadium Oxides Excited with Visible light" Catal.Lett.(印刷中).

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Yochida et al.: "Ultra Highly Dispersed Titanium Oxide on Silica" J.Phys.(印刷中).

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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