Degradation of trichloroethylene by hydrodechlorination using formic acid as hydrogen source over supported Pd catalysts

Xin Yu, Ting Wu, Xue Jing Yang, Jing Xu, Jordan Auzam, Raphael Semiat, Yi Fan Han*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

An advanced method for the degradation of trichloroethylene (TCE) over Pd/MCM-41 catalysts through a hydrogen-transfer was investigated. Formic acid (FA) was used instead of gaseous H2 as the hydrogen resource. As a model H-carrier compound, FA has proven to yield less by-products and second-hand pollution during the reaction. Several factors have been studied, including: the property of catalyst supports, Pd loading and size, temperature, initial concentrations of FA and TCE (potential impact on the reaction rates of TCE degradation), and FA decomposition. The intrinsic kinetics for TCE degradation were measured, while the apparent activation energies and the reaction orders with respect to TCE and FA were calculated through power law models. On the basis of kinetics, we assumed a plausible reaction pathway for TCE degradation in which the catalytic degradation of TCE is most likely the rate-determining step for this reaction.

Original languageEnglish
Pages (from-to)178-189
Number of pages12
JournalJournal of Hazardous Materials
Volume305
DOIs
StatePublished - 15 Mar 2016
Externally publishedYes

Keywords

  • Formic acid (FA)
  • Hydrodechlorination
  • Kinetics
  • Pd/MCM-41
  • Trichloroethylene (TCE)

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