Activated carbon cloth-supported Pd-Cu catalyst: Application for continuous water denitrification

Uri Matatov-Meytal, Moshe Sheintuch*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Pd-Cu catalysts supported on woven fibrous cloths have been tested for continuous nitrate hydrogenation in water. The results demonstrate that activated carbon cloth (ACC) is an adequate support for the Pd-Cu bimetallic catalysts giving better activity and selectivity than that of supports like glass fibers cloth (GFC) and GFCs coated with Al2O3 or SnO2, which were also studied. A series of 2% Pd-Cu/ACC catalysts were prepared by selective deposition of Cu on Pd/ACC and examined at steady state in a continuous three-phase radial flow reactor. The activity and selectivity of the bimetallic catalysts depend on the Cu:Pd ratio and the metal loading. The beneficial effect of copper on nitrate hydrogenation activity with a Pd-Cu/ACC catalyst is probably related to the formation of an active Pd-Cu ensembles working as active sites for nitrate-to-nitrite reduction. The maximal nitrate conversion was achieved with 0.6 wt.% Cu-2 wt.% Pd/ACC catalyst showing a 92% selectivity towards gaseous products.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalCatalysis Today
Volume102-103
DOIs
StatePublished - 2005
Externally publishedYes

Keywords

  • Activated carbon cloth
  • Liquid-phase hydrogenation
  • Nitrate
  • Pd-Cu catalyst

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