Korean Journal of Chemical Engineering

, Volume 19, Issue 1, pp 167–174 | Cite as

Studies on the preparation of C/SiC composite as a catalyst support by CVI in a fluidized bed reactor

  • Sung-Joo Lee
  • Mi-Hyun Kim
  • Yong-Tark Kim
  • Gui-Yung Chung
Article

Abstract

In this research, in order to improve the mechanical strength and oxidation resistance of a catalyst support, we studied the formation of SiC layer on the pore surfaces of activated carbons by permeating and depositing SiC from a reaction between hydrogen and dichlorodimethylsilane (DDS). The porous structure should be kept during deposition. A fluidized bed reactor and activated carbons of size of 20-40 mesh were used. By studying characteristics of deposits under various deposition conditions, we confirmed that the best conditions of manufacturing catalyst support are a lower pressure and a lower concentration. In this work, at the conditions of 5 torr of total pressure and 3% of DDS concentration, during the 10 hr processing time, deposition occurred on the pore walls before plugging pores. The results from the mathematical modeling were compared with the experimental results.

Key words

Fluidized Bed Reactor CVI Ceramic Composites Silicon Carbide Catalyst Support 

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Copyright information

© Korean Institute of Chemical Engineering 2002

Authors and Affiliations

  • Sung-Joo Lee
    • 1
  • Mi-Hyun Kim
    • 1
  • Yong-Tark Kim
    • 1
  • Gui-Yung Chung
    • 1
  1. 1.Department of Chemical EngineeringHongik UniversitySeoulKorea

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