Chemically specific surface diffusion of oxygen through a porous membrane modified with cobalt porphyrin on its pore surface

Hiroyuki Nishide, Takayuki Suzuki, Ryuji Nakagawa, Keita Itakura, Eishun Tsuchida

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Chemically specific surface diffusion of oxygen was observed on a porous glass membrane modified on its pore surface with cobalt porphyrin (CoP) which binds oxygen specifically and reversibly from air. The membrane displayed both permselectivity for oxygen and high permeability. The enhanced and specific diffusion of oxygen was mathematically analyzed with a parallel model involving surface diffusion of oxygen via CoP fixed on the pore surface and gas phase or Knudsen diffusion. α3β-CoP was characterized by larger rate constants of oxygen binding (kon) and oxygen dissociation (koff), gave a larger surface diffusion constant of oxygen (Ds ∼ 10-4 cm2 s-1), and brought about higher oxygen permeability through the membrane.

Original languageEnglish
Pages (from-to)12312-12317
Number of pages6
JournalJournal of Physical Chemistry
Volume99
Issue number32
Publication statusPublished - 1995

Fingerprint

Surface diffusion
Porphyrins
surface diffusion
Cobalt
porphyrins
cobalt
Oxygen
membranes
Membranes
porosity
oxygen
permeability
Rate constants
Gases
dissociation
vapor phases
Glass
glass
air

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Chemically specific surface diffusion of oxygen through a porous membrane modified with cobalt porphyrin on its pore surface. / Nishide, Hiroyuki; Suzuki, Takayuki; Nakagawa, Ryuji; Itakura, Keita; Tsuchida, Eishun.

In: Journal of Physical Chemistry, Vol. 99, No. 32, 1995, p. 12312-12317.

Research output: Contribution to journalArticle

Nishide, Hiroyuki ; Suzuki, Takayuki ; Nakagawa, Ryuji ; Itakura, Keita ; Tsuchida, Eishun. / Chemically specific surface diffusion of oxygen through a porous membrane modified with cobalt porphyrin on its pore surface. In: Journal of Physical Chemistry. 1995 ; Vol. 99, No. 32. pp. 12312-12317.
@article{0962378b24cd4c20a896d52653915699,
title = "Chemically specific surface diffusion of oxygen through a porous membrane modified with cobalt porphyrin on its pore surface",
abstract = "Chemically specific surface diffusion of oxygen was observed on a porous glass membrane modified on its pore surface with cobalt porphyrin (CoP) which binds oxygen specifically and reversibly from air. The membrane displayed both permselectivity for oxygen and high permeability. The enhanced and specific diffusion of oxygen was mathematically analyzed with a parallel model involving surface diffusion of oxygen via CoP fixed on the pore surface and gas phase or Knudsen diffusion. α3β-CoP was characterized by larger rate constants of oxygen binding (kon) and oxygen dissociation (koff), gave a larger surface diffusion constant of oxygen (Ds ∼ 10-4 cm2 s-1), and brought about higher oxygen permeability through the membrane.",
author = "Hiroyuki Nishide and Takayuki Suzuki and Ryuji Nakagawa and Keita Itakura and Eishun Tsuchida",
year = "1995",
language = "English",
volume = "99",
pages = "12312--12317",
journal = "Journal of Physical Chemistry",
issn = "0022-3654",
publisher = "American Chemical Society",
number = "32",

}

TY - JOUR

T1 - Chemically specific surface diffusion of oxygen through a porous membrane modified with cobalt porphyrin on its pore surface

AU - Nishide, Hiroyuki

AU - Suzuki, Takayuki

AU - Nakagawa, Ryuji

AU - Itakura, Keita

AU - Tsuchida, Eishun

PY - 1995

Y1 - 1995

N2 - Chemically specific surface diffusion of oxygen was observed on a porous glass membrane modified on its pore surface with cobalt porphyrin (CoP) which binds oxygen specifically and reversibly from air. The membrane displayed both permselectivity for oxygen and high permeability. The enhanced and specific diffusion of oxygen was mathematically analyzed with a parallel model involving surface diffusion of oxygen via CoP fixed on the pore surface and gas phase or Knudsen diffusion. α3β-CoP was characterized by larger rate constants of oxygen binding (kon) and oxygen dissociation (koff), gave a larger surface diffusion constant of oxygen (Ds ∼ 10-4 cm2 s-1), and brought about higher oxygen permeability through the membrane.

AB - Chemically specific surface diffusion of oxygen was observed on a porous glass membrane modified on its pore surface with cobalt porphyrin (CoP) which binds oxygen specifically and reversibly from air. The membrane displayed both permselectivity for oxygen and high permeability. The enhanced and specific diffusion of oxygen was mathematically analyzed with a parallel model involving surface diffusion of oxygen via CoP fixed on the pore surface and gas phase or Knudsen diffusion. α3β-CoP was characterized by larger rate constants of oxygen binding (kon) and oxygen dissociation (koff), gave a larger surface diffusion constant of oxygen (Ds ∼ 10-4 cm2 s-1), and brought about higher oxygen permeability through the membrane.

UR - http://www.scopus.com/inward/record.url?scp=33751155873&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33751155873&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33751155873

VL - 99

SP - 12312

EP - 12317

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

SN - 0022-3654

IS - 32

ER -