Preparation and properties of carbon/zeolite composites with corrugated structure

Kiyoshi Okada, Yu Ichiro Shimizu, Yoshikazu Kameshima, Akira Nakajima

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Composites of carbon/zeolite with corrugated structures were prepared by carbonization, steam activation and/or hydrothermal treatment of corrugated paper. No zeolite formation resulted from conventional hydrothermal treatment of the carbonized and activated samples in NaOH solution but zeolite Na P1 was formed by addition of silica to the solution. By contrast, zeolites Na P1 and Na A were formed by the in-situ crystallization method (hydrothermal treatment of solid samples impregnated with NaOH solution). With higher impregnating NaOH concentrations, longer reaction times and higher reaction temperatures, the products changed to sodalite- and cancrinite-type compounds. Hydrothermal treatment was effective in increasing the specific surface area of the products by the formation of zeolite from amorphous calcium aluminosilicate, and also increased the mechanical strength by gluing together the carbon fibers in the samples. The resulting samples showed enhanced adsorption for polar molecules such as ammonia, water vapor and methanol due to the formation of composites of activated carbon with hydrophilic zeolites.

Original languageEnglish
Pages (from-to)281-291
Number of pages11
JournalJournal of Porous Materials
Volume12
Issue number4
DOIs
Publication statusPublished - Oct 1 2005
Externally publishedYes

Keywords

  • Adsorptive properties
  • Carbon/zeolite
  • Corrugate structure
  • Corrugated paper
  • Mechanical structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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