Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide
Cobalt-based catalysts supported on TiO 2 and ZrO 2 were studied for the oxidation of NO to NO 2 in excess oxygen. NO oxidation was studied as the first step in a two-step catalytic scheme where NO is oxidized to NO 2 and in turn NO 2 is reduced with CH 4 to N 2 under lean conditions. Catalysts were...
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| Veröffentlicht in: | Journal of catalysis 2007-04, Vol.247 (2), p.356-367 |
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| container_title | Journal of catalysis |
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| creator | Yung, Matthew M. Holmgreen, Erik M. Ozkan, Umit S. |
| description | Cobalt-based catalysts supported on TiO
2 and ZrO
2 were studied for the oxidation of NO to NO
2 in excess oxygen. NO oxidation was studied as the first step in a two-step catalytic scheme where NO is oxidized to NO
2 and in turn NO
2 is reduced with CH
4 to N
2 under lean conditions. Catalysts were prepared by sol–gel (SG) and incipient-wetness impregnation (IWI) techniques and characterized by temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). It was found the nature of the support, the synthesis technique, and the pretreatment conditions affect the catalytic activity. 10% Co/ZrO
2 catalysts prepared by IWI were found to be most active among the catalysts tested, giving the highest NO uptake capacity and the highest turnover frequency (TOF) based on NO adsorption sites. Tests with bulk Co
3O
4 also showed significant NO oxidation activity. |
| doi_str_mv | 10.1016/j.jcat.2007.02.020 |
| format | Article |
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2 and ZrO
2 were studied for the oxidation of NO to NO
2 in excess oxygen. NO oxidation was studied as the first step in a two-step catalytic scheme where NO is oxidized to NO
2 and in turn NO
2 is reduced with CH
4 to N
2 under lean conditions. Catalysts were prepared by sol–gel (SG) and incipient-wetness impregnation (IWI) techniques and characterized by temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). It was found the nature of the support, the synthesis technique, and the pretreatment conditions affect the catalytic activity. 10% Co/ZrO
2 catalysts prepared by IWI were found to be most active among the catalysts tested, giving the highest NO uptake capacity and the highest turnover frequency (TOF) based on NO adsorption sites. Tests with bulk Co
3O
4 also showed significant NO oxidation activity.</description><identifier>ISSN: 0021-9517</identifier><identifier>EISSN: 1090-2694</identifier><identifier>DOI: 10.1016/j.jcat.2007.02.020</identifier><identifier>CODEN: JCTLA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Catalysis ; Catalysts ; Chemistry ; Co 3O 4 ; Cobalt ; DRIFTS ; Exact sciences and technology ; General and physical chemistry ; Nitric oxide ; NO 2 ; NO oxidation ; NO x ; Oxidation ; Raman ; Spectrum analysis ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; TiO 2 ; TPR ; XPS ; ZrO 2</subject><ispartof>Journal of catalysis, 2007-04, Vol.247 (2), p.356-367</ispartof><rights>2007 Elsevier Inc.</rights><rights>2007 INIST-CNRS</rights><rights>Copyright © 2007 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c357t-e0482c2af381a27223c8598c0d07a34b571c0832d2f9f45cc806e142e00fc7e33</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0021951707000644$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18683532$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Yung, Matthew M.</creatorcontrib><creatorcontrib>Holmgreen, Erik M.</creatorcontrib><creatorcontrib>Ozkan, Umit S.</creatorcontrib><title>Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide</title><title>Journal of catalysis</title><description>Cobalt-based catalysts supported on TiO
2 and ZrO
2 were studied for the oxidation of NO to NO
2 in excess oxygen. NO oxidation was studied as the first step in a two-step catalytic scheme where NO is oxidized to NO
2 and in turn NO
2 is reduced with CH
4 to N
2 under lean conditions. Catalysts were prepared by sol–gel (SG) and incipient-wetness impregnation (IWI) techniques and characterized by temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). It was found the nature of the support, the synthesis technique, and the pretreatment conditions affect the catalytic activity. 10% Co/ZrO
2 catalysts prepared by IWI were found to be most active among the catalysts tested, giving the highest NO uptake capacity and the highest turnover frequency (TOF) based on NO adsorption sites. Tests with bulk Co
3O
4 also showed significant NO oxidation activity.</description><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemistry</subject><subject>Co 3O 4</subject><subject>Cobalt</subject><subject>DRIFTS</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Nitric oxide</subject><subject>NO 2</subject><subject>NO oxidation</subject><subject>NO x</subject><subject>Oxidation</subject><subject>Raman</subject><subject>Spectrum analysis</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><subject>TiO 2</subject><subject>TPR</subject><subject>XPS</subject><subject>ZrO 2</subject><issn>0021-9517</issn><issn>1090-2694</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kEFrGzEQhUVpoK6TP9CTCPS4m5G02tVCLsE0bcCQS3IW8qyUanElR5JLk19f2Q7kFhgY5vHNG-YR8o1By4D1V3M7oyktBxha4LXgE1kwGKHh_dh9JgsAzppRsuEL-ZrzDMCYlGpBwipuzLY0G5PtRKuH2b7kkmne73YxlarFQIsvJnhDTZjoq08YD4OLiZbflsZ_fjLFVyw6GnxJHo-apSUe5_hkA538UTsnZ85ss71460vyePvjYfWrWd__vFvdrBsUciiNhU5x5MYJxQwfOBeo5KgQJhiM6DZyYAhK8Im70XUSUUFvWcctgMPBCrEklyffXYrPe5uLnuM-hXpSs1F2Xc_4UCF-gjDFnJN1epf8H5NeNAN9iFXP-hCrPsSqgdeCuvT9zdlkNFuXTECf3zdVr4QUvHLXJ87WN_96m3RGbwPaySeLRU_Rf3TmP3Ldjmw</recordid><startdate>20070425</startdate><enddate>20070425</enddate><creator>Yung, Matthew M.</creator><creator>Holmgreen, Erik M.</creator><creator>Ozkan, Umit S.</creator><general>Elsevier Inc</general><general>Elsevier</general><general>Elsevier BV</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20070425</creationdate><title>Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide</title><author>Yung, Matthew M. ; Holmgreen, Erik M. ; Ozkan, Umit S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c357t-e0482c2af381a27223c8598c0d07a34b571c0832d2f9f45cc806e142e00fc7e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Catalysis</topic><topic>Catalysts</topic><topic>Chemistry</topic><topic>Co 3O 4</topic><topic>Cobalt</topic><topic>DRIFTS</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Nitric oxide</topic><topic>NO 2</topic><topic>NO oxidation</topic><topic>NO x</topic><topic>Oxidation</topic><topic>Raman</topic><topic>Spectrum analysis</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>TiO 2</topic><topic>TPR</topic><topic>XPS</topic><topic>ZrO 2</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yung, Matthew M.</creatorcontrib><creatorcontrib>Holmgreen, Erik M.</creatorcontrib><creatorcontrib>Ozkan, Umit S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yung, Matthew M.</au><au>Holmgreen, Erik M.</au><au>Ozkan, Umit S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide</atitle><jtitle>Journal of catalysis</jtitle><date>2007-04-25</date><risdate>2007</risdate><volume>247</volume><issue>2</issue><spage>356</spage><epage>367</epage><pages>356-367</pages><issn>0021-9517</issn><eissn>1090-2694</eissn><coden>JCTLA5</coden><abstract>Cobalt-based catalysts supported on TiO
2 and ZrO
2 were studied for the oxidation of NO to NO
2 in excess oxygen. NO oxidation was studied as the first step in a two-step catalytic scheme where NO is oxidized to NO
2 and in turn NO
2 is reduced with CH
4 to N
2 under lean conditions. Catalysts were prepared by sol–gel (SG) and incipient-wetness impregnation (IWI) techniques and characterized by temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). It was found the nature of the support, the synthesis technique, and the pretreatment conditions affect the catalytic activity. 10% Co/ZrO
2 catalysts prepared by IWI were found to be most active among the catalysts tested, giving the highest NO uptake capacity and the highest turnover frequency (TOF) based on NO adsorption sites. Tests with bulk Co
3O
4 also showed significant NO oxidation activity.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1016/j.jcat.2007.02.020</doi><tpages>12</tpages></addata></record> |
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| ispartof | Journal of catalysis, 2007-04, Vol.247 (2), p.356-367 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Catalysis Catalysts Chemistry Co 3O 4 Cobalt DRIFTS Exact sciences and technology General and physical chemistry Nitric oxide NO 2 NO oxidation NO x Oxidation Raman Spectrum analysis Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry TiO 2 TPR XPS ZrO 2 |
| title | Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide |
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