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Cellulose decomposition in supercritical water to recover chemicals

Research Project

Project/Area Number 07455433
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 反応・分離工学
Research InstitutionTohoku University

Principal Investigator

AZIRI Tadafumi  Tohoku Univ.Faculty of Engineering, Assoc.Prof., 工学部, 助教授 (60182995)

Co-Investigator(Kenkyū-buntansha) SMITH Richard  Tohoku Univ.Faculty of Engineering, Assoc.Prof., 工学部, 助教授 (60261583)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1996: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsSupercritical water / Biomass / cellulose / kinetics / mechanism / hydrolysis / オリゴ糖 / シミュレーション / 分解 / モンテカルロシミュレーション
Research Abstract

For the development of a new conversion process of biomass in supercritical water (SCW) to recover chemicals, basic studies on cellulose conversion in SCW were conducted. By using a slurry pomp developed, reaction of cellulose in SCW were studied in detail. In SCW reaction of cellulose, high yield of hydrolysis products was obtained. Kinetics of cellulose hydrolysis were also evaluated. The hydrolysis rate jumped up to a higher level above the critical point. This is the reason for the high yield of hydrolysis products obtained.
SCW decomposition experiments of glucose, grycelaldehyde, dihydroxyaceton, cellobiose, cellotriose, cellopentaose in SCW were conducted and the main reaction pathways of cellulose decomposition were elucidated on the basis of the results obtained. Kinetics of each reaction pathways were also evaluated. By using Monte Carlo Simulation method with the rate constants evaluated, the product distribution of the cellulose decomposition could be fairly well explained.

Report

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

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Bernard Kabymela: "Glucese decomposition in supercritical water" Industrial and Engineering Chemistry Research. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Bernard Kabymela: "Gryceraldehyde and Dihydroxyaceton decomposition in supereritical water" Industrial and Engineering Chemistry Research. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Bernard Kabymela, Tadafumi Adschiri, Kunio Arai: ""Glucose decomposition in supercritical water"" Ind.Eng.Chem.Res.(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] Bernard Kabymela, Tadafumi Adschiri, Kunio Arai: ""Gryceraldehyde and Dihydroxyacetone decomposition in supercritical water"" Ind.Eng.Chem.Res.(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] Bernard M. Kabymela at al.: "Kinetics of Glucouse Epimerization and Deco mposition in Subcritical and Supercritical Water" Industrial and Engineering Chemistry Reseach. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Bernard M. Kabymela at al.: "Degradation Kinetics of Dihydroxyacetone and Glyceraldehyde in Subcritial and Supercritical Water" Industrial and Engineering Chemistry Reseach. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2021-04-07  

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