Decomposition of carbon tetrachloride and mono-Chlorobenzen by using basic molten salts

Yojiro Yamauchi, Osamu Takeda, Masayoshi Hoshi, Tsutomu Yamamura, Yuzuru Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The decomposition of simple organic chlorides (carbon tetrachloride, CCl4 and mono-chlorobenzen, C6H5CI) as the imitation substances of polychlorobiphenyls (PCBs) were investigated by using basic molten salts with a low melting point and oxidizing ability in order to establish a safe, simple and highly efficient decomposition process. CCl 4 or C6H5Cl was injected together with an inert carrier gas (Ar) into basic molten salts (KOH-K2CO3) at 673-983 K, and the residual concentration in the exhaust was measured. The decomposition efficiency of CCl4 strongly depended on the reaction temperature and the immersion depth of gas injection nozzle (related to the residence time of CCl4bubble in the molten salts). The decomposition efficiency reached to very high of 99.9% with KOH-20 mol% K2CO 3at 973 K. On the other hand, the decomposition efficiency of C 6H5Cl was not so high (97%) in the inert atmosphere condition applied in this study.

Original languageEnglish
Pages (from-to)974-979
Number of pages6
Issue number12
Publication statusPublished - 2012 Dec


  • Basic molten salts
  • Carbon tetrachloride
  • Chlorobenzen
  • Waste treatment


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