Reductive and oxidative destruction of chlorinated hydrocarbons in gas-phase catalytic reactors: Packed-beds and modified fuel cells

Xiumin Ju, A. Eduardo Sáez, Wendell P. Ela, Robert G. Arnold, Eric A. Betterton, Matthew Wallen, Kate Candillo, Brian Barbaris, Ozer Orbay

Research output: Contribution to journalConference articlepeer-review

Abstract

The catalytic destruction of trichloroethylene and perchloroethylene was studied in a packed-bed reactor (Pt/alumina) and a modified fuel cell (Pt/carbon cloth) to treat soil-vapor extraction gases. Mechanisms and conditions for which reductive dehalogenation and oxidation of the targets occur when both hydrogen and oxygen are present in the reactive mixture were established. Low temperatures (< 200°C) favored reductive dehalogenation of the targets and produced ethane, while higher temperatures (between 200° and 400°C) favored oxidative dehalogenation and produced CO 2. Reductive dehalogenation of the targets was achieved in the cathode of the modified fuel cell using cell potential (0.1-0.4 v cathode relative to anode) to control the supply of hydrogen for the reaction by reformation of hydrogen gas in the cathode from protons produced in the anode. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).

Original languageEnglish (US)
Pages (from-to)ENVR-135
JournalACS National Meeting Book of Abstracts
Volume228
Issue number1
StatePublished - Oct 20 2004
EventAbstracts of Papers - 228th ACS National Meeting - Philadelphia, PA, United States
Duration: Aug 22 2004Aug 26 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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