Dehydrochlorination and recovery of hydrochloric acid by thermal treatment of a chloride ion-intercalated hydrotalcite-like compound

Tomohito Kameda, Toshiaki Yoshioka, Kouji Watanabe, Miho Uchida, Akitsugu Okuwaki

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We examined the dehydrochlorination of a chloride ion-intercalated hydrotalcite-like compound (Cl--HT) on thermal treatment under water vapor, and the subsequent recovery of hydrochloric acid. The degree of dehydrochlorination increased with increasing temperature, partial pressure of water vapor, and time, whereas the hydrochloric acid concentration decreased with increasing partial pressure of water vapor and time. Greater than 90% dehydrochlorination and greater than 20 wt.% recovery of hydrochloric acid could be obtained by thermal treatment of Cl--HT in the conditions as follows; temperature: 550 °C, time: 0.5 h, water vapor: 7%.

Original languageEnglish
Pages (from-to)215-219
Number of pages5
JournalApplied Clay Science
Volume37
Issue number1-2
DOIs
Publication statusPublished - 2007 Jun 1

Keywords

  • Chloride ion
  • Dehydrochlorination
  • Hydrochloric acid
  • Hydrotalcite-like compound
  • Recovery
  • Thermal treatment

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Dehydrochlorination and recovery of hydrochloric acid by thermal treatment of a chloride ion-intercalated hydrotalcite-like compound'. Together they form a unique fingerprint.

  • Cite this