Effects of further adding of catalysts on nanostructures of carbon aerogels

Y. N. Feng, L. Miao, M. Tanemura, S. Tanemura, K. Suzuki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Carbon aerogels were synthesized by poly-condensation of resorcinol-formaldehyde (RF) in a sodium carbonate catalyzed solution, followed by gelation and supercritical drying and carbonization in N2 gas atmosphere. A further adding of catalyst was carried out during the gelation process, in which catalysts of acetic acid and sodium carbonate were used, respectively. Experimental results showed that both the base and the acid catalysts adding can accelerate the gelation stage to about 2 h, shorter than 1 week, at the same time, the acid further adding yielded a broad pore size distribution, while the base further adding produced a sharp one. Carbonization caused no obvious change in the porosity for the acetic acid further adding sample, while the sodium carbonate catalyst further adding sample showed a sharp pore size distribution during carbonization. It was shown that the carbonization could improve the porosity and lead to the successful decrease in the bulk density.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume148
Issue number1-3
DOIs
Publication statusPublished - 2008 Feb 25
Externally publishedYes

Keywords

  • Bulk density
  • Carbon aerogels
  • Carbonization
  • Gelation process
  • Pore size distribution
  • Porosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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