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

Masaru Kagawa; Hitoshi Kawamyra; Shuji Kimura; Hiroyasu Nishiguchi; Tatsumi Ishihara; Yusaku Takita

doi:10.1252/kakoronbunshu.27.69

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

Masaru Kagawa, Hitoshi Kawamyra, Shuji Kimura, Hiroyasu Nishiguchi, Tatsumi Ishihara, Yusaku Takita

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

Abstract

Selective reduction of NO with CH₄ on platinum supported on cobalt phosphate was investigated. It was found that Pt/Co₃(PO₄)₂ exhibits the high activity to NO reduction with CH₄. NO conversion increased with increasing amount of Pt loading and it attained to a maximum activity at 1 wt% Pt. Conversion of NO was always higher than that of NO₂ on Pt/Co₃(PO₄)₂ under the same condition. This result suggested that the reduction of NO was proceeded not through the formation of NO₂ or NO₃^- as intermediate species but 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 was coexisted. Temperature programmed desorption (TPD) measurement suggested that loading Pt accelerates the dissociative adsorption of NO and weakened the adsorption of O₂. Therefore, it seems that NO decomposition on Pt/Co₃(PO₄)₂ was initiated by the dissociative adsorption of NO. Coexisting CH₄ removed the formed oxygen which strongly adsorbed on the catalyst and recovered the active site. This study reveals that Pt supporting on Co₃(PO₄)₂ is highly active for the reduction of NO with CH₄.

Original language	English
Pages (from-to)	74-75
Number of pages	2
Journal	kagaku kogaku ronbunshu
Volume	27
Issue number	1
DOIs	https://doi.org/10.1252/kakoronbunshu.27.69
Publication status	Published - Jan 1 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1252/kakoronbunshu.27.69

Fingerprint Dive into the research topics of 'Reduction of NO with CH<sub>4</sub> over platinum supported on cobalt phosphate catalyst'. Together they form a unique fingerprint.

Cite this

@article{e3dfa29cef6a4d46b2167d30c3778fff,

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

abstract = "Selective reduction of NO with CH4 on platinum supported on cobalt phosphate was investigated. It was found that Pt/Co3(PO4)2 exhibits the high activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and it attained to a maximum activity at 1 wt% Pt. Conversion of NO was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. This result suggested that the reduction of NO was proceeded not through the formation of NO2 or NO3- as intermediate species but 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 was coexisted. Temperature programmed desorption (TPD) measurement suggested that loading Pt accelerates the dissociative adsorption of NO and weakened the adsorption of O2. Therefore, it seems that NO decomposition on Pt/Co3(PO4)2 was initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen which strongly adsorbed on the catalyst and recovered the active site. This study reveals that Pt supporting on Co3(PO4)2 is highly active for the reduction of NO with CH4.",

author = "Masaru Kagawa and Hitoshi Kawamyra and Shuji Kimura and Hiroyasu Nishiguchi and Tatsumi Ishihara and Yusaku Takita",

year = "2001",

month = jan,

day = "1",

doi = "10.1252/kakoronbunshu.27.69",

language = "English",

volume = "27",

pages = "74--75",

journal = "Kagaku Kogaku Ronbunshu",

issn = "0386-216X",

publisher = "The Society of Chemical Engineers, Japan",

number = "1",

}

TY - JOUR

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

AU - Kagawa, Masaru

AU - Kawamyra, Hitoshi

AU - Kimura, Shuji

AU - Nishiguchi, Hiroyasu

AU - Ishihara, Tatsumi

AU - Takita, Yusaku

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Selective reduction of NO with CH4 on platinum supported on cobalt phosphate was investigated. It was found that Pt/Co3(PO4)2 exhibits the high activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and it attained to a maximum activity at 1 wt% Pt. Conversion of NO was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. This result suggested that the reduction of NO was proceeded not through the formation of NO2 or NO3- as intermediate species but 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 was coexisted. Temperature programmed desorption (TPD) measurement suggested that loading Pt accelerates the dissociative adsorption of NO and weakened the adsorption of O2. Therefore, it seems that NO decomposition on Pt/Co3(PO4)2 was initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen which strongly adsorbed on the catalyst and recovered the active site. This study reveals that Pt supporting on Co3(PO4)2 is highly active for the reduction of NO with CH4.

AB - Selective reduction of NO with CH4 on platinum supported on cobalt phosphate was investigated. It was found that Pt/Co3(PO4)2 exhibits the high activity to NO reduction with CH4. NO conversion increased with increasing amount of Pt loading and it attained to a maximum activity at 1 wt% Pt. Conversion of NO was always higher than that of NO2 on Pt/Co3(PO4)2 under the same condition. This result suggested that the reduction of NO was proceeded not through the formation of NO2 or NO3- as intermediate species but 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 was coexisted. Temperature programmed desorption (TPD) measurement suggested that loading Pt accelerates the dissociative adsorption of NO and weakened the adsorption of O2. Therefore, it seems that NO decomposition on Pt/Co3(PO4)2 was initiated by the dissociative adsorption of NO. Coexisting CH4 removed the formed oxygen which strongly adsorbed on the catalyst and recovered the active site. This study reveals that Pt supporting on Co3(PO4)2 is highly active for the reduction of NO with CH4.

UR - http://www.scopus.com/inward/record.url?scp=24044437896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24044437896&partnerID=8YFLogxK

U2 - 10.1252/kakoronbunshu.27.69

DO - 10.1252/kakoronbunshu.27.69

M3 - Article

AN - SCOPUS:24044437896

VL - 27

SP - 74

EP - 75

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

IS - 1