Development of zirconia-based oxide sorbents for removal of NO and NO2

Izumi Matsukuma, Suzue Kikuyama, Ryuji Kikuchi, Kazunari Sasaki, Koichi Eguchi

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Zirconia-based oxide sorbents for NOx has been investigated to clarify the role of additives. Addition of yttria to Mn-Zr oxide improved the sorption capacity due to enhanced basicity and larger surface area. A Small amount of transition metal oxide as additives was effective in promoting the sorption-desorption capability. A small addition of Mn or Co to ZrO2 was effective in achieving reversible sorption and desorption of NOx due to their activity as a reduction-oxidation catalyst. These oxides were active for the oxidation of NO to nitrate ions via NO2 in an oxidizing atmosphere and reduction of nitrate ions in the presence of a gaseous reductant. The NOx sorptive capacities of Mn-containing sorbents were significantly deteriorated in dilute SO2. The NOx sorption capacity of 0.5 wt.% Co/ZrO2 was lowered only slightly in the initial stage of NO2 sorption with dilute SO2.

Original languageEnglish
Pages (from-to)107-115
Number of pages9
JournalApplied Catalysis B: Environmental
Volume37
Issue number2
DOIs
Publication statusPublished - Jun 8 2002

Fingerprint

Sorbents
Zirconia
Oxides
Sorption
sorption
oxide
Nitrates
Desorption
desorption
Ions
nitrate
Oxidation
Yttrium oxide
ion
Reducing Agents
transition element
Alkalinity
Transition metals
Thermodynamic properties
surface area

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Cite this

Development of zirconia-based oxide sorbents for removal of NO and NO2. / Matsukuma, Izumi; Kikuyama, Suzue; Kikuchi, Ryuji; Sasaki, Kazunari; Eguchi, Koichi.

In: Applied Catalysis B: Environmental, Vol. 37, No. 2, 08.06.2002, p. 107-115.

Research output: Contribution to journalArticle

Matsukuma, Izumi ; Kikuyama, Suzue ; Kikuchi, Ryuji ; Sasaki, Kazunari ; Eguchi, Koichi. / Development of zirconia-based oxide sorbents for removal of NO and NO2. In: Applied Catalysis B: Environmental. 2002 ; Vol. 37, No. 2. pp. 107-115.
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