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Temperature Effect on 1H Chemical Shift of Hydroxyl Groups in Zeolites

Research Project

Project/Area Number 24656486
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Catalyst/Resource chemical process
Research InstitutionTokyo Institute of Technology

Principal Investigator

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

Project Period (FY) 2012-04-01 – 2013-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
KeywordsH-ZSM-5 / 温度可変1H MAS NMR / ケミカルシフト / 酸強度 / ゼオライト / 酸性プロトン / 固体高分解能核磁気共鳴
Research Abstract

The influence of temperature on 1H chemical shift due to hydroxyl groups in H+-exchanged any kinds of zeolites (ZSM-5 type zeolites including silicalite, mordenite and Y zeolites) was examined by variable temperatures 1H magic-angle spinning nuclear magnetic resonance (1H MAS NMR) spectroscopy measured from 298 to 673 K. The temperature dependence of the 1H chemical shift due to the bridging hydroxyl groups was more pronounced than that due to the terminal silanol groups and also the nest silanol groups. The relationship between the 1H chemical shift and the acid strength of the hydroxyl groups in zeolites was discussed on the basis of the variable temperature 1H MAS NMR measurements of zeolites, previously reported thermal analysis data, such as the heat of NH3 adsorption measured by NH3 temperature-programmed desorption, and also the catalytic activity for the conversion of ethanol and 1-hexene.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (7 results)

All 2013 2012

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (2 results)

  • [Journal Article] Selective production of ethylene and propylene via monomolecular cracking of pentene over proton-exchanged zeolites: Pentene cracking mechanism determined by spatial volume of zeolite cavity2013

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

      Journal of Catalysis

      Volume: 302 Pages: 101-114

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shape-Selective Catalysis Determined by the Volume of a Zeolite Cavity and the Reaction Mechanism for Propylene Production by the Conversion of Butene Using a Proton-Exchanged Zeolite2012

    • Author(s)
      Yasuyoshi Iwase, Yasuharu Sakamoto, Akinobu Shiga, Akimitsu Miyaji, Ken Motokura, To-ru Koyama and Toshihide Baba
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 116 Pages: 5182-5196

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of morphology and particle size of ZSM-5 on catalytic performance for ethylene conversion and heptane cracking2012

    • Author(s)
      Jakkidi Krishna Reddy, Ken Motokura, To-ru Koyama, Akimitsu Miyaji and Toshihide Baba
    • Journal Title

      Jounal of Catalsis

      Volume: 289 Pages: 53-61

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Proton Exchange Reaction between Hydroxyl Groups in the Supercage and Those in the Sodalitecage of Y Zeolite as Studied by Variable Temperature ^1H MAS NMR2012

    • Author(s)
      Naoki Asakawa, Ken Motokura, Tatsuaki Yashima, To-ru Koyama, Toshinori O-nuki, Akimitsu Miyaji, Toshihide Baba
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 116 Pages: 17734-17738

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Temperature Effect on ^1H Chemical Shift of Hydroxyl Groups in Zeolites and their Catalytic Activities as Solid Acids2012

    • Author(s)
      Hajime Munakata, To-ru Koyama, Tatsuaki Yashima, Naoki Asakawa, Toshinori O-nuki, Ken Motokura, Akimitsu Miyaji, Toshihide Baba
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 116 Pages: 14551-4560

    • NAID

      130005453209

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Presentation] ^1H MAS NMRからみた高温におけるゼオライト水酸基の性質と酸触媒特性2013

    • Author(s)
      宗像元・小山徹・本倉健・宮地輝光・馬場俊秀
    • Organizer
      第111回触媒討論会
    • Place of Presentation
      関西大学
    • Year and Date
      2013-03-26
    • Related Report
      2013 Final Research Report
  • [Presentation] ^1H MAS NMRからみた高温におけるゼオライトの水酸基の性質と酸触媒特性2012

    • Author(s)
      宗像元,小山徹,八嶋建明,本倉健,宮地輝光,馬場俊秀
    • Organizer
      第42回石油・石油化学討論会
    • Place of Presentation
      秋田キャッスルホテル
    • Year and Date
      2012-10-11
    • Related Report
      2013 Final Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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