Analysis of chemical reaction in the voids of cokes using NMR gas imaging

Koji Saito, Kazuya Kunitomo, Kouichi Fukuda, Kenji Katoh, Ikuo Komaki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The pore structure is very critical and sensitive to react with CO2 in the case of cokes. But it is very difficult to detect the pore structure of cokes with nondestructive and high resolution because conventional porosimeter method can't detect macro pore (over 400 μm), and at the same time with destructive. We are at first demonstrating 3D-SPRITE imaging to detect the pore structure using SF4 gas, before and after CO2 reaction, (over 1 μm) with non destructive and the same pores, and then clarify the reaction mechanism. We found that the reaction rate of the cokes with CO2 depends on the pore size and the critical pore size is over 100 μm.

Original languageEnglish
Pages (from-to)651-657
Number of pages7
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume88
Issue number10
DOIs
Publication statusPublished - Oct 2002

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Pore structure
voids
Chemical reactions
chemical reactions
Gases
Nuclear magnetic resonance
porosity
Imaging techniques
nuclear magnetic resonance
Pore size
Porosimeters
gases
Reaction rates
Macros
reaction kinetics
high resolution

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Analysis of chemical reaction in the voids of cokes using NMR gas imaging. / Saito, Koji; Kunitomo, Kazuya; Fukuda, Kouichi; Katoh, Kenji; Komaki, Ikuo.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 88, No. 10, 10.2002, p. 651-657.

Research output: Contribution to journalArticle

Saito, Koji ; Kunitomo, Kazuya ; Fukuda, Kouichi ; Katoh, Kenji ; Komaki, Ikuo. / Analysis of chemical reaction in the voids of cokes using NMR gas imaging. In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 2002 ; Vol. 88, No. 10. pp. 651-657.
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