The chlorination pattern of naphthalene vapor when passed through a 1 cm particle bed of 0.5% (mass) copper (II) chloride (CuCl2) mixed with silicon dioxide (SiO2) was studied. Gas streams consisting of 92% (molar) N2, 8% O2 and 0.1% naphthalene vapor were introduced to an isothermal flow reactor containing the CuCl2/SiO2 particle bed. Chlorination of naphthalene was studied from 100 to 400 °C at a gas velocity of 2.7 cm/s. Mono through hexachlorinated naphthalene congeners were observed at 250 °C whereas a broader distribution of polychlorinated naphthalenes (PCNs) including hepta and octachlorinated naphthalenes was observed at 300 °C. PCN production was peak at 250 °C with 3.07% (molar) yield, and monochloronaphthalene (MCN) congeners were the major products at two different temperatures. In order to assess the effect of a residence time on naphthalene chlorination, an experiment was also conducted at 300 °C with a gas velocity of 0.32 cm/s. The degree of naphthalene chlorination increased as a gas velocity decreased.

Abstract
 1. Introduction
 2. Materials and Methods
  2.1. Reactor System and Operating Conditions
  2.2. Product Collection and PCN Analysis
 3. Results and Discussion
  3.1. PCNs Yields
  3.2. PCNs Homologue Distributions
 4. Conclusions
 References

• Jong-Bum Kim(Division for Industrial & Environmental Research, Korea Atomic Energy Research Institute (KAERI))
• Chang-Yong Choi(Division for Industrial & Environmental Research, Korea Atomic Energy Research Institute (KAERI))
• Seong-Ho Jang(Department of Bioenvironmental Energy, Pusan National University)
• James A. Mulholland(School of Civil and Environmental Engineering, Georgia Institute of Technology)
• Do-Hyong Kim(Land Protection Branch, Georgia Environmental Protection Division)
• Jae-Yong Ryu(Division for Industrial & Environmental Research, Korea Atomic Energy Research Institute (KAERI)) Corresponding author