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

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

研究成果: ジャーナルへの寄稿学術誌査読

22 被引用数 (Scopus)


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.

ジャーナルApplied Catalysis B: Environmental
出版ステータス出版済み - 6月 8 2002

!!!All Science Journal Classification (ASJC) codes

  • 触媒
  • 環境科学一般
  • プロセス化学およびプロセス工学


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