Catalytic dechlorination of aromatic chlorides with noble-metal catalysts under mild conditions: Approach to practical use

Yuji Ukisu, Satoshi Kameoka, Tatsuo Miyadera

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

Catalytic dechlorination of aromatic chlorides was carried out in a solution of NaOH in 2-propanol with a carbon-supported Rh-based catalyst (Rh-Pt/C) at temperatures below 35°C. It was found that the dechlorination rate of aromatic chlorides (chlorobenzene, p-chlorotoluene, and 4-chlorobiphenyl) is strongly dependent upon the substituents. The dechlorination rate is hardly affected by the presence of water (ca. 10%), even under aerobic conditions, although the catalytic activity is suppressed significantly in the presence of acetone (ca. 5%). The catalyst life was evaluated both in a batch system and in a continuous-flow system. The catalytic activity gradually decreased, probably because of an accumulation of NaCl on the catalyst surface. The deactivated catalyst could be reactivated by washing it with water. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)97-104
Number of pages8
JournalApplied Catalysis B: Environmental
Volume27
Issue number2
DOIs
Publication statusPublished - 2000 Jul 17
Externally publishedYes

Keywords

  • Aromatic Chloride
  • Catalyst life
  • Dechlorination
  • Noble-metal catalyst

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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