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Mechanistic Study of NOx Storage and Reduction Behavior over Pt/Alkali Metal Nitrate Nanocomposite Catalysts

Research Project

Project/Area Number 24656494
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Catalyst/Resource chemical process
Research InstitutionKanagawa University

Principal Investigator

NAITO SHUICHI  神奈川大学, 工学部, 教授 (20011710)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsNOx貯蔵量 / 完全貯蔵時間 / 相転移 / NOx貯蔵還元触媒 / カリウムチタネート / アナターゼ / ルチル / Kーチタネート / 窒素酸化物貯蔵還元触媒 / 自動車排ガス除去 / ナノ構造触媒
Research Abstract

Recently we have found that K-titanate nanobelts (KTN) possess highest capacity and excellent response for NOx storage reduction processes as supports. To investigate the mechanism of this process, we have employed various physico-chemical surface techniques such as XPS, XRD, EXAFS and FT-IR. We have also employed different crystalline structure TiO2 supports with various loading amounts of Pt and KNO3 to study the activity and selectivity controlling factors for NSR processes. We could conclude the following three factors were important as the NSR catalyst in the Pt-K/TiO2 system; (1) smaller Pt metal particles for rapid NO oxidation and KNO3 reduction, (2) facile migration of K cations from and back to the K-rich layers during NOx storage and reduction processes, (3) existence of a certain surface structure to maintain high dispersion of K cations.

Report

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

    (18 results)

All 2014 2013 2012

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (12 results)

  • [Journal Article] Aqueou phase reforming of ethanol and acetic acid over TiO_2 supported Ru catalysts2014

    • Author(s)
      T.Nazawa,Y.Mizukoshi, A.Yoshida, S. Naito
    • Journal Title

      Applied Catal B

      Volume: 146 Pages: 221-226

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Aqueous phase reforming of ethanol and acetic acid over TiO2 supported Ru catalysts2014

    • Author(s)
      T. Nozawa, Y. Mizukoshi, A. Yoshida, S. Naito
    • Journal Title

      Applied Catalysis B,

      Volume: 146 Pages: 221-226

    • DOI

      10.1016/j.apcatb.2013.06.017

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanistic study of hydrogen occulusion in hollow silica nano-spheres encapsulating iridium metal2013

    • Author(s)
      T. Miyao, A. Yoshida, H. Yamada, S. Naito
    • Journal Title

      J. Mol. Catal., A, General

      Volume: 378 Pages: 174-178

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mechanistic Study of Hydrogen Occlusion in Hollow Silica Nano-spheres Encapsulating Iridium Metal2013

    • Author(s)
      T. Miyao, A. Yoshida, H. Yamada, S. Naito
    • Journal Title

      Journal of Molecular Catalysis A: Chemical

      Volume: 378 Pages: 174-178

    • DOI

      10.1016/j.molcata.2013.06.011

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NOx storage/reduction over alkali metal nitrate impregnated titanate nanobelt catalysts and investigation of alkali metal cation migration using XPS2012

    • Author(s)
      A.Yoshida, W. Shen, T. Eda, R. Watanabe, T. Ito, S. Naito
    • Journal Title

      Catal. Today

      Volume: 174 Pages: 78-82

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] NOx storage/reduction over alkali-metal-nitrate impregnated titanate nanobelt catalysts and investigation of alkali metal cation migration using XPS2012

    • Author(s)
      A. Yoshida, W. Shen, T. Eda, R. Watanabe, T. Ito,S. Naito
    • Journal Title

      Catalysis Today

      Volume: 184 Issue: 1 Pages: 78-82

    • DOI

      10.1016/j.cattod.2011.10.018

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] ゼオライト担持Ru触媒上での酢酸水溶液からの水素生成反応におけるRu粒子径と選択性との相関2014

    • Author(s)
      野澤寿章,水越優一,吉田曉弘,内藤周弌
    • Organizer
      第114回触媒討論会
    • Place of Presentation
      ロワジールホテル(豊橋)
    • Related Report
      2013 Annual Research Report
  • [Presentation] メソポーラスセリア担持Rh触媒上でのCO水素化反応へのアルカリ金属添加効果2014

    • Author(s)
      羽毛田知輝,新垣知次,吉田曉弘,内藤周弌
    • Organizer
      第114回触媒学会
    • Place of Presentation
      ロワジールホテル(豊橋)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ナノベルト構造を持つカリウムチタネート(KTN)によるNO_x貯蔵還元反応の検討2013

    • Author(s)
      渡邊嶺,Shen Weihua,工藤祐希,高橋克明,吉田暁弘,内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Final Research Report
  • [Presentation] Ru/TiO2触媒上でのエタノール及び酢酸を反応物とした液相改質による水素生成反応の機構の検討2013

    • Author(s)
      野澤寿章, 水越優一, 吉田曉弘, 内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ナノベルト構造を持つカリウムチタネート(KTN)触媒によるNOx貯蔵還元反応の検討2013

    • Author(s)
      渡辺嶺, SHEN Weihua, 工藤祐希, 高橋克明, 吉田曉弘, 内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 規則的メソ細孔を持つアルミナ及びセリア担持Rh,Pd触媒上でのCO水素化反応2013

    • Author(s)
      新垣知次, 郷智, 羽毛田知輝, 渡邊美夫, 吉田曉弘, 内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 担持Ru触媒上での酢酸水溶液からの水素生成反応に対する担体や添加物の効果2013

    • Author(s)
      水越優一, 野澤寿章,鈴木俊裕,吉田曉弘,内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 様々な共役系高分子とMgH2による水素吸蔵材料の調製とその水素吸放出特性2013

    • Author(s)
      森吉永, 渡辺剛人, 吉原由美子, 古屋佳, 吉田曉弘, 内藤周弌
    • Organizer
      第112回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 不斉反応を指向したオリゴペプチド固定化触媒におけるメソポーラスシリカの担体特性2013

    • Author(s)
      吉田曉弘, 海老良典, 佐藤隆介, 内藤周弌
    • Organizer
      第113回触媒討論会
    • Place of Presentation
      関西大学(大阪)
    • Related Report
      2013 Annual Research Report
  • [Presentation] CeO_2及びZrO_2担持KNO_3添加Pt,Co,Cu触媒上でのNOx貯蔵還元反応2012

    • Author(s)
      伊藤哲,渡邊嶺,梶山貴大,崎山佳那子,吉田暁弘,内藤周弌
    • Organizer
      第110回触媒討論会
    • Place of Presentation
      九州大学(福岡)
    • Related Report
      2013 Final Research Report
  • [Presentation] Mechanistic study of NO_x storage and reduction behavior by in situ XPS and FT-IR over Pt/K/CeO_2 and Pt/K/ZrO_2 NSR catalysts2012

    • Author(s)
      S. Naito, W. Shen, Y, Watanabe, A. Yoshida
    • Organizer
      15^<th> International congress on catalysis
    • Place of Presentation
      Munchen (Germany)
    • Related Report
      2013 Final Research Report
  • [Presentation] CeO2及びZrO2担持KNO3添加Pt,Co,Cu触媒上でのNOx貯蔵還元反応2012

    • Author(s)
      伊藤哲,渡邊嶺,梶山貴大,崎山佳那子,吉田暁弘,内藤周弌
    • Organizer
      第110回触媒討論会
    • Place of Presentation
      九州大学(福岡)
    • Related Report
      2012 Research-status Report

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

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