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Characteristics of Dehydrogenation Catalysis at Solid-liquid Interface Kept with Any Temperature Gradient

Research Project

Project/Area Number 07650943
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 InstitutionScience University of Tokyo

Principal Investigator

SAITO Yasukazu  Sci.Univ.Tokyo, Fac.Eng.Prof., 工学部, 教授 (10010761)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsLiquid-film state / Dehydrogenation catalysis / Superheated / Temperature gradient / Solid-liquid interface / Equilibrium-conversion surplus / 2-Propanol / Cyclohexanes / 液膜型触媒反応 / 液相脱水素反応 / アセトン / シクロヘキサン / ベンゼン / ヒートポンプ / 水素輸送
Research Abstract

Carbon-supported metal catalysis dipped with insufficient amounts of organic substrates (hereafter termed as "liquid-film states") have been found to exhibit strikingly-enhanced activities of dehydrogenation under boiling conditions in comparison with those of suspended catalyst states. Following characteristics were observed at the adequate ratio of catalyst amounts to substrate amounts :
(1) The rates of evaporation from the substrate liquid phase were decreased.
(2) Temperatures of the catalyst layr were higher than that of the boiling liquid bulk.
(3) Vigorous evolution of bubbles occurred not only from the liquid bulk but also from the powder surfaces of carbon-supported catalysts.
(4) Evolved bubbles can pass through the liquid film with insufficient gas-liquid equilibration, supplying product-rich components to the gas phase.
(5) Product hydrogen were separated from the substrate vapor by fractional condensation, which resulted in no possibility of hydrogen return to the boiling reaction solution.
(6) The substrate was condensed at low temperatures and supplied directly to the catalyst, with advantageous adsorption and predominant coverage assured.
Consequently, kinetically-controlled dehydrogenation with catalysts in liquid-film states under boiling conditions undergoes at high reaction rates and one-path conversions. Product desorption from the catalyst would be coupled with the temperature gradient at the solid-liquid interface, for which common thermodynamic features are pointed out with those of "thermal diffusion" (Prigogine, 1947). Various kinds of experimental evidence were obtained for catalytic dehydrogenation of 2-propanol as well as of cyclohexanes.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 斉藤泰和・荻野英明・福嶋知之: "炭素担持微粒Pt-Ru複合金属触媒の粒径分布と粒子組成分布" 化学工学論文集. 21・6. 984-989 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 斉藤泰和・谷田部肇・荻野英明・福島知之: "沸騰・液膜条件下での2-プロパノール脱水素触媒反応の特質" 水素エネルギーシステム. 21・1. 34-61 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 斉藤泰和: "遷移金属錯体の光触媒作用" ファインケミカル. 25・14. 5-14 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 斉藤泰和: "ケミカルヒートポンプの現状と課題" 化学工学. 60・4. 255-259 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 劉純山・坂口麻美子・斉藤泰和: "デカリン脱水素/ナフタレン水素化触媒反応対を用いる水素の長期間貯蔵・長距離輸送" 水素エネルギーシステム. 22・1(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] N.Meng,S.Shinoda,Y.Saito: "Improvements on Thermol Efficiency of Chemical Heat Pump" International J.of Hydrogen Energy. 22(in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Saito, H.Ogino, T.Fukushima: "Distributions of Particle Size and Particle Composition in Carbon-supported Fine-particle Pt-Ru Composite Catalyst (Japanese)" Collected Papers on Chem.Engineering, Jpn.21 (6). 984-989 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Saito, H.Yatabe, H.Ogino, T.Fukushima: "Characteristics of 2-Propanol Dehydrogenation Catalysis under Boiling and Liquid-film Conditions (Japanese)" J.Hydrogen Energy System Soc.Jpn.21 (1). 34-41 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Saito: "Photocatalysis of Transition Metal Complexes (Japanese)" Fine Chemicals. 25 (14). 5-14 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Saito: "Present Status and Problems of Chemical Heat Pump (Japanese)" Chem.Engineering. 60 (4). 255-259 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Liu, M.Sakaguchi, Y.Saito: "Long-term Storage and Long-distance Transportation of Hydrogen by Use of Catalyst-assisted Decalin Dehydrogenation/Naphthalene Hydrogenation Pair (Japanese)" J.Hydrogen Energy System Soc.Jpn.22 (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] N.Meng, S.Shinoda, Y.Saito: "Improvement on Thermal Efficiency of Chemical Heat Pump Involving the Reaction Couple of 2-Propanol Dehydrogenation and Acetone Hydrogenation (English)" 22 (in press). 1997.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Saito: "Catalyst-assisted Chemical Heat Pump for Upgrading Low-quality Heats (English)" Transact.of ASME. 119 (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 斉藤泰和・荻野英明・福嶋知之: "炭素担持微粒Pt-Ru複合金属触媒の粒径分布と粒子組成分布" 化学工学論文集. 21・6. 984-989 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 斉藤泰和・谷田部肇・荻野英明・福嶋知之: "沸騰・液膜条件下での2-プロパノール脱水素触媒反応の特質" 水素エネルギーシステム. 21・1. 34-41 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 斉藤泰和: "遷移金属錯体の光触媒作用" ファインケミカル. 25・14. 5-14 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 斉藤泰和: "ケミカルヒートポンプの現状と課題" 化学工学. 60・4. 255-259 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 劉純山・坂口麻美子・斉藤泰和: "デカリン脱水素/ナフタレン水素化触媒反応対を用いる水素の長期間貯蔵・長距離輸送" 水素エネルギーシステム. 21・1(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Meng,S.Shinoda,Y.Saito: "Improvements on Thermal Efficiency of Chemical Heat Pump" Int.J.Hydrogen Energy. 22(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 斉藤 泰和: "液膜型脱水素触媒反応の特質" 表面. 33. 1-9 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 斉藤 泰和: "2-プロパノール/アセトン/水素系ヒートポンプシステムにおける熱効率" 水素エネルギーシステム. 20. 25-32 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 斉藤 泰和: "シクロヘキサンからの水素生成と水素輸送" 水素エネルギーシステム. 20. 17-24 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 斉藤 泰和: "炭素担持微粒Pt-Ru複合金属触媒の粒径分布と粒子組成分布" 化学工学論文集. 21. 984-989 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] N.Meng: "Improvements on Thermal Efficiency of Chemical Heat Pump" Intern. J. Hydrogen Energy. 21(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 谷田部 肇: "沸騰液膜条件下での2-プロパノール脱水素触媒反応の特質" 水素エネルギーシステム. 21(印刷中). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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