Chemistry and Physics Faculty Articles

Title

Catalytic Dechlorination of Gas-Phase Perchloroethylene Under Mixed Redox Conditions

Document Type

Article

Publication Date

2-21-2008

Keywords

PCE destruction, Catalytic dechlorination, Redox conditions, Reduction, Oxidation

Publication Title

Applied Catalysis B: Environmental

ISSN

0926-3373

Volume

79

Issue/No.

1

First Page

43

Last Page

52

Peer Reviewed

1

Abstract

The validity of a new method to destroy gas-phase perchloroethylene (PCE) is demonstrated at bench scale using a fixed-bed reactor that contains a Pt/Rh catalyst. Hydrogen and oxygen were simultaneously fed to the reactor together with PCE. The conversion efficiencies of PCE were sensitive to H2/O2 ratio and reactor temperature. When the temperature was ≥400 °C and H2/O2 was ≥2.15, PCE conversion efficiency was maintained at ≥90%. No catalyst deactivation was observed for over 2 years, using only mild, convenient regeneration procedures. It is likely that PCE reduction steps precede oxidation reactions and that the importance of oxidation lies in its elimination of intermediates that would otherwise lead to catalyst poisoning. In practice, this catalytic dechlorination method holds potential for low-cost, large-scale field operation.

Comments

©2007 Elsevier B.V. All rights reserved.

DOI

10.1016/j.apcatb.2007.09.034

This document is currently not available here.

Find in your library

Share

COinS