Reduction of selenate with hydrazine monohydrate over Pt catalysts in aqueous solution

Jinxian Zhao, Hideki Matsune, Sakae Takenaka, Masahiro Kishida

Research output: Contribution to journalArticle

Abstract

This paper describes the activity of Pt catalysts supported on metal-oxides (TiO2, ZrO2 and Al2O3) for the reduction reaction of selenate with hydrazine monohydrate in aqueous solution. The Pt/TiO2 catalyst exhibited superior performance in the reduction reaction of selenate with hydrazine monohydrate, compared with the Pt/ZrO2 and Pt/Al2O3 catalysts. The deactivation of Pt/TiO2 catalyst was attributed to the coverage of Pt particles by reduction product Se metal. To overcome this problem, a Pt catalyst supported on carbon nanotubes (CNTs) coated with TiO2 (TiO2/CNT) was also prepared. The selenate conversion over the Pt/TiO2/CNT catalyst was much higher than that over the Pt/TiO2 catalyst of the same Pt loading. Incorporating CNTs significantly improved the catalytic activity and durability of the Pt catalyst for the reduction of selenate.

Original languageEnglish
Pages (from-to)963-973
Number of pages11
JournalChemical Engineering Journal
Volume308
DOIs
Publication statusPublished - Jan 15 2017

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hydrazine
Selenic Acid
selenate
Hydrazine
Carbon Nanotubes
aqueous solution
catalyst
Catalysts
Carbon nanotubes
Catalyst supports
Catalyst activity
Metals
Oxides
Durability
durability

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Reduction of selenate with hydrazine monohydrate over Pt catalysts in aqueous solution. / Zhao, Jinxian; Matsune, Hideki; Takenaka, Sakae; Kishida, Masahiro.

In: Chemical Engineering Journal, Vol. 308, 15.01.2017, p. 963-973.

Research output: Contribution to journalArticle

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