• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2000 Fiscal Year Final Research Report Summary

Determination method of angstrom pore size distribution with molecular statistical method

Research Project

Project/Area Number 10554039
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field 機能・物性・材料
Research InstitutionCHIBA UNIVERSITY

Principal Investigator

KANEKO Katsumi  Chiba University Chemistry Professor, 理学部, 教授 (20009608)

Co-Investigator(Kenkyū-buntansha) SUZUKI Takaomi  Chiba University Chemistry Associate Professor, 理学部, 助教授 (20196835)
Project Period (FY) 1998 – 2000
KeywordsActivated carbon / Molecular sieve carbon / Gas adsorption / Density functional theory / GCMC simulation / Ultramicropores / Pore size distribution / Micropore filling
Research Abstract

The micropore structures of noncrystalline carbons were examined by high resolution molecular adsorption. In particular ultramicropore-range structures were studied carefully. The nitrogen and argon adsorption isotherms were measured over a wide relative pressure range of 10^<-9> to 1 by construction of a new adsorption equipment from ultrahigh vacuum level and high sensitive weight change system with the aid of a laser detector. This wide pressure adsorption equipment can measure the nitrogen adsorption isotherm of even ultramicroporous carbon at 77 K.We are trying to develop a new theory for analysis of these wide pressure range adsorption isotherms.
A new analytical method of a density functional theory (DFT) for calculation. of the micropore size distribution of activated carbon from the high resolution nitrogen adsorption isotherms at 77 K was developed. The DFT can give the micropore size distribution from 0.5 to several nm. Also grand canonical Monte Carlo simulation (GCMC) simulation was applied to determine the micropore size distribution of activated carbon fiber using nitroged adsorption isotherm at 77 K.In this case, the selection of the weight function still gave a serious influence on the pore size distribution and thereby the method must be improved.
The nitrogen and argon adsorption isotherms at 303 K was used for determination of ultramicropores of molecular sieve carbons with the aid of GCMC simulation. The micropore volume was determined by water vapor adsorption. The comparison of the experimental adsorption isotherm at 303 K with the GCMC simulated isotherm provides the exact ultramicropore size. This method can determine the ultramicropore size with the accuracy of 0.02 nm.

  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] K.E.Gubbins,K.Kaneko: "Structure model of porous carbons"Chem.Phys.Carbon. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Murata,K.kaneko: "Porosity evaluation of intrinsic intrapare of single wall nanohorn"Nanoletters. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Murata,K.Kaneko: "A new determination method of absolute adsorption isotherm of supercritical gases under high pressure"J.Chem.Phys.. 114. 4196-4205 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Ohba,K.Kaneko: "Relationship between PR-Plot and micropore width distribution from GCMC simulation"Carbon. 38. 1879-1902 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.E.Merrovi,K.Kaneko: "Micropore size distribution of activated carbon fiber using density functional theory"Langmuir. 16. 4300-4304 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Aoshima,K.Kaneko: "Micropore filling of supercritical Xe in micropores of activated carbon fiber"J.Colloid Interface Sci.. 222. 179-183 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 金子克美 ら: "カーボン用語辞典"アグネ承風社. 439 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 金子克美: "セラミッフ工学ハンドブック"技報党(印刷中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.J.Bandosz, K.E.Gubbins K.Kaneko et al.: "Structure models of porous carbons"Chemistry and Physics of Carbon. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Murata, K.Kaneko et al.: "Porosity evaluation of intrinsic intraparticle nanopores of single wall carbon nanohorn"Nanoletters. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Miyawaki and K.Kaneko: "Pore width dependence of the temperature change of the confined methane density in slit-shaped micropores"Chem.Phys.Lett.. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Iiyama, M.Ruike, and K.Kaneko: "Structural mechanism of water adsorption with in situ small angle X-ray scattering"Chem.Phys.Lett.. 331. 359-364 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Murata, K.Kaneko et al.: "Pore structure of single-wall carbon nanohorn aggregates"Chem.Phys.Lett.. 331. 14-20 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Murata and K.Kaneko: "A new determination method of absolute adsorption isotherm of supercritical gases under high pressure with a special relevance to DFT theory"J.Chem.Phys.. 114. 4196-4205 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ohkubo, C.-M.Yang K.Kaneko et al.: "High-temperature treatment effect of microporous carbon on ordered structure of confined SO_2"Chem.Phys.Lett.. 329. 71-75 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.Li and K.Kaneko: "Molecular geometry sensitive filling in semi-rectangular micropores of organic-inorganic hybrid crystals"J.Phys.Chem.. 104 (38). 8940-8945 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ohba, T.Suzuki, K.Kaneko: "Preformed monolayer-induced filling of molecules in micropores"Chem.Phys.Lett.. 326. 158-162 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ohba, T.Suzuki, K.Kaneko: "Relationship between DR-plot and micropore width distribution from GCMC simulation"Carbon. 38. 1879-1902 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.E.-Merraoui, M.Aoshima, K.Kaneko: "Micropore size distribution of activated carbon fiber using the density functional theory and other methods"Langmuir. 16 (9). 4300-4304 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Murata and K.Kaneko: "Nano-range interfacial layer upon high pressure adsorption of surpercritical gases"Chem.Phys.Lett.. 321 (5). 342-348 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Suzuki, R.Kobori, K.Kaneko: "Grand Canonical Monte Carlo Simultion-Assisted pore width determination of molecular sieve carbons by use of ambient temperature N_2 adsorption"Carbon. 38. 623-641 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Aoshima, K.Fukasawa, K.Kaneko: "Micropore filling of supercritical Xe in micropores of activated carbon fibers"J.Colloid Interface Sci. 222. 179-183 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2002-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi