Reduction of NO with CH4 over platinum supported on cobalt phosphate catalyst

M. Kagawa; H. Kawamura; S. Kimura; H. Nishiguchi; Tatsumi Ishihara; Y. Takita

Reduction of NO with CH₄ over platinum supported on cobalt phosphate catalyst

M. Kagawa, H. Kawamura, S. Kimura, H. Nishiguchi, Tatsumi Ishihara, Y. Takita

Research output: Contribution to journal › Article › peer-review

Abstract

A study on the selective reduction of NO with CH₄ on platinum supported on cobalt phosphate showed that Pt/Co₃(PO₄)₂ exhibited the highest activity to NO reduction with CH₄. NO conversion increased with increasing amount of Pt loading and attained a maximum activity at 1 wt % Pt. NO conversion was always higher than that of NO₂ on Pt/Co₃(PO₄)₂ under the same condition. The reduction of NO was proceeded through the direct decomposition of NO as a primary reaction. NO conversion increased with decreasing oxygen partial pressure and the high conversion of NO into N₂ was exhibited when no oxygen coexisted. TPD measurement suggested that loading Pt accelerated the dissociative adsorption of NO and weakened the O₂. Thus, NO decomposition on Pt/Co₃(PO₄)₂ seemed to be initiated by the dissociative adsorption of NO. Coexisting CH₄ removed the formed oxygen that strongly adsorbed on the catalyst and recovered the active site. Pt supporting on Co₃(PO₄)₂ was highly active for the reduction of NO with CH₄.

Original language	English
Pages (from-to)	69-75
Number of pages	7
Journal	JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume	34
Issue number	3
Publication status	Published - Mar 1 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

Cite this

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title = "Reduction of NO with CH4 over platinum supported on cobalt phosphate catalyst",

abstract = "A study on the selective reduction of NO with CH4 on platinum supported on cobalt phosphate showed that Pt/Co3(PO4)2 exhibited the highest activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and attained a maximum activity at 1 wt % Pt. NO conversion was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. The reduction of NO was proceeded through the direct decomposition of NO as a primary reaction. NO conversion increased with decreasing oxygen partial pressure and the high conversion of NO into N2 was exhibited when no oxygen coexisted. TPD measurement suggested that loading Pt accelerated the dissociative adsorption of NO and weakened the O2. Thus, NO decomposition on Pt/Co3(PO4)2 seemed to be initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen that strongly adsorbed on the catalyst and recovered the active site. Pt supporting on Co3(PO4)2 was highly active for the reduction of NO with CH4.",

author = "M. Kagawa and H. Kawamura and S. Kimura and H. Nishiguchi and Tatsumi Ishihara and Y. Takita",

year = "2001",

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journal = "Journal of Chemical Engineering of Japan",

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TY - JOUR

T1 - Reduction of NO with CH4 over platinum supported on cobalt phosphate catalyst

AU - Kagawa, M.

AU - Kawamura, H.

AU - Kimura, S.

AU - Nishiguchi, H.

AU - Ishihara, Tatsumi

AU - Takita, Y.

PY - 2001/3/1

Y1 - 2001/3/1

N2 - A study on the selective reduction of NO with CH4 on platinum supported on cobalt phosphate showed that Pt/Co3(PO4)2 exhibited the highest activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and attained a maximum activity at 1 wt % Pt. NO conversion was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. The reduction of NO was proceeded through the direct decomposition of NO as a primary reaction. NO conversion increased with decreasing oxygen partial pressure and the high conversion of NO into N2 was exhibited when no oxygen coexisted. TPD measurement suggested that loading Pt accelerated the dissociative adsorption of NO and weakened the O2. Thus, NO decomposition on Pt/Co3(PO4)2 seemed to be initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen that strongly adsorbed on the catalyst and recovered the active site. Pt supporting on Co3(PO4)2 was highly active for the reduction of NO with CH4.

AB - A study on the selective reduction of NO with CH4 on platinum supported on cobalt phosphate showed that Pt/Co3(PO4)2 exhibited the highest activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and attained a maximum activity at 1 wt % Pt. NO conversion was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. The reduction of NO was proceeded through the direct decomposition of NO as a primary reaction. NO conversion increased with decreasing oxygen partial pressure and the high conversion of NO into N2 was exhibited when no oxygen coexisted. TPD measurement suggested that loading Pt accelerated the dissociative adsorption of NO and weakened the O2. Thus, NO decomposition on Pt/Co3(PO4)2 seemed to be initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen that strongly adsorbed on the catalyst and recovered the active site. Pt supporting on Co3(PO4)2 was highly active for the reduction of NO with CH4.

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AN - SCOPUS:0035273379

SN - 0021-9592

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SP - 69

EP - 75

JO - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

IS - 3

ER -

Reduction of NO with CH₄ over platinum supported on cobalt phosphate catalyst

Abstract

All Science Journal Classification (ASJC) codes

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