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Proton MAS NMR measurement of acidic protons over zeolites at high temperature

Research Project

Project/Area Number 25630364
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Catalyst/Resource chemical process
Research InstitutionTokyo Institute of Technology

Principal Investigator

TOSHIHIDE Baba  東京工業大学, 総合理工学研究科(研究院), 教授 (50165057)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywordsゼオライト / 温度可変1H MAS NMR / ケミカルシフト / 酸強度 / Y型ゼオライト
Outline of Final Research Achievements

1H MAS NMR spectra of proton-exchanged zeolites were measured at high temperature up to 673 K. The proton chemical shift due to the hydroxyl groups over proton-exchanged zeolite depended on the temperature; the chemical shift inceased with inceasing the temperature up to 623 K, and was almost constant when the temperature was higher than 623 K. The difference in the chemical shift due to the change in temperature depended on the zeolite. The hydroxyl group with the stronger acid strength showed the larger chemical shift and larger change in chemical shift due to the change in temperature.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (3 results)

All 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Identification and Catalytic Behavior of Brønsted Acid Sites on Al-Containing ITQ-212013

    • Author(s)
      Akimitsu Miyaji, Yasuharu Sakamoto, Yasuyoshi Iwase, Tatsuaki Yashima, Ryutaro Koide, Ken Motokura, Toshihide Baba
    • Journal Title

      J. Phys. Chem. C

      Volume: 117 Issue: 35 Pages: 18074-18083

    • DOI

      10.1021/jp404970k

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Al-ITQ-21 ゼオライトに発現する酸性プロトンの性質2013

    • Author(s)
      宮地輝光, 小山徹, 本倉健, 馬場俊秀
    • Organizer
      第29回ゼオライト研究発表会
    • Place of Presentation
      東北大学(宮城県)
    • Related Report
      2013 Research-status Report
  • [Presentation] Al-ITQ-21に発現する酸点の位置とその触媒特性2013

    • Author(s)
      宮地輝光, 小山徹, 本倉健, 馬場俊秀
    • Organizer
      第43回石油・石油化学討論会
    • Place of Presentation
      北九州国際会議場(福岡県)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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