Copper Catalysts for Soot Oxidation: Alumina versus Perovskite Supports

Copper catalysts prepared using four supports (Mg- and Sr-modified Al2O3 and MgTiO3 and SrTiO3 perovskites) have been tested for soot oxidation by O2 and NO x /O2. Among the catalysts studied, Cu/SrTiO3 is the most active for soot oxidation by NO x /O2 and the support affects positively copper activ...

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Veröffentlicht in:	Environmental science & technology 2008-10, Vol.42 (20), p.7670-7675
Hauptverfasser:	López-Suárez, F. E, Bueno-López, A, Illán-Gómez, M. J, Adamski, A, Ura, B, Trawczynski, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Alumina Aluminum Oxide - chemistry Applied sciences Calcium Compounds - chemistry Catalysis Catalysts Catalytic oxidation Copper Copper - chemistry Cyclohexanols - chemistry Exact sciences and technology Hydrogen - chemistry Nitrates - chemistry Nitric Oxide - chemistry Oxidation Oxidation-Reduction Oxides - chemistry Oxygen - chemistry Perovskite Pollution Remediation and Control Technologies Soot - chemistry Spectrum Analysis Temperature Titanium - chemistry
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container_title	Environmental science & technology
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creator	López-Suárez, F. E Bueno-López, A Illán-Gómez, M. J Adamski, A Ura, B Trawczynski, J
description	Copper catalysts prepared using four supports (Mg- and Sr-modified Al2O3 and MgTiO3 and SrTiO3 perovskites) have been tested for soot oxidation by O2 and NO x /O2. Among the catalysts studied, Cu/SrTiO3 is the most active for soot oxidation by NO x /O2 and the support affects positively copper activity. With this catalyst, and under the experimental conditions used, the soot combustion by NO x /O2 presents a considerable rate from 500 °C (100 °C below the uncatalysed reaction). The Cu/SrTiO3 catalyst is also the most effective for NO x chemisorption around 425 °C. The best activity of Cu/SrTiO3 can be attributed to the improved redox properties of copper originated by Cu-support interactions. This seems to be related to the presence of weakly bound oxygen on this sample. The copper species present in the catalyst Cu/SrTiO3 can be reduced more easily than those in other supports, and for this reason, this catalyst seems to be the most effective to convert NO into NO2, which explains its highest activity for soot oxidation.
doi_str_mv	10.1021/es8009293
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E ; Bueno-López, A ; Illán-Gómez, M. J ; Adamski, A ; Ura, B ; Trawczynski, J</creator><creatorcontrib>López-Suárez, F. E ; Bueno-López, A ; Illán-Gómez, M. J ; Adamski, A ; Ura, B ; Trawczynski, J</creatorcontrib><description>Copper catalysts prepared using four supports (Mg- and Sr-modified Al2O3 and MgTiO3 and SrTiO3 perovskites) have been tested for soot oxidation by O2 and NO x /O2. Among the catalysts studied, Cu/SrTiO3 is the most active for soot oxidation by NO x /O2 and the support affects positively copper activity. With this catalyst, and under the experimental conditions used, the soot combustion by NO x /O2 presents a considerable rate from 500 °C (100 °C below the uncatalysed reaction). The Cu/SrTiO3 catalyst is also the most effective for NO x chemisorption around 425 °C. The best activity of Cu/SrTiO3 can be attributed to the improved redox properties of copper originated by Cu-support interactions. This seems to be related to the presence of weakly bound oxygen on this sample. The copper species present in the catalyst Cu/SrTiO3 can be reduced more easily than those in other supports, and for this reason, this catalyst seems to be the most effective to convert NO into NO2, which explains its highest activity for soot oxidation.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es8009293</identifier><identifier>PMID: 18983091</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Alumina ; Aluminum Oxide - chemistry ; Applied sciences ; Calcium Compounds - chemistry ; Catalysis ; Catalysts ; Catalytic oxidation ; Copper ; Copper - chemistry ; Cyclohexanols - chemistry ; Exact sciences and technology ; Hydrogen - chemistry ; Nitrates - chemistry ; Nitric Oxide - chemistry ; Oxidation ; Oxidation-Reduction ; Oxides - chemistry ; Oxygen - chemistry ; Perovskite ; Pollution ; Remediation and Control Technologies ; Soot - chemistry ; Spectrum Analysis ; Temperature ; Titanium - chemistry</subject><ispartof>Environmental science & technology, 2008-10, Vol.42 (20), p.7670-7675</ispartof><rights>Copyright © 2008 American Chemical Society</rights><rights>2009 INIST-CNRS</rights><rights>Copyright American Chemical Society Oct 15, 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a409t-3eda03a716272c1fd9921414c9bb4fd5505a8035658d1fa12aa4c2671affb95b3</citedby><cites>FETCH-LOGICAL-a409t-3eda03a716272c1fd9921414c9bb4fd5505a8035658d1fa12aa4c2671affb95b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es8009293$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es8009293$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>315,782,786,2769,27085,27933,27934,56747,56797</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20798216$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18983091$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>López-Suárez, F. E</creatorcontrib><creatorcontrib>Bueno-López, A</creatorcontrib><creatorcontrib>Illán-Gómez, M. J</creatorcontrib><creatorcontrib>Adamski, A</creatorcontrib><creatorcontrib>Ura, B</creatorcontrib><creatorcontrib>Trawczynski, J</creatorcontrib><title>Copper Catalysts for Soot Oxidation: Alumina versus Perovskite Supports</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Copper catalysts prepared using four supports (Mg- and Sr-modified Al2O3 and MgTiO3 and SrTiO3 perovskites) have been tested for soot oxidation by O2 and NO x /O2. Among the catalysts studied, Cu/SrTiO3 is the most active for soot oxidation by NO x /O2 and the support affects positively copper activity. With this catalyst, and under the experimental conditions used, the soot combustion by NO x /O2 presents a considerable rate from 500 °C (100 °C below the uncatalysed reaction). The Cu/SrTiO3 catalyst is also the most effective for NO x chemisorption around 425 °C. The best activity of Cu/SrTiO3 can be attributed to the improved redox properties of copper originated by Cu-support interactions. This seems to be related to the presence of weakly bound oxygen on this sample. The copper species present in the catalyst Cu/SrTiO3 can be reduced more easily than those in other supports, and for this reason, this catalyst seems to be the most effective to convert NO into NO2, which explains its highest activity for soot oxidation.</description><subject>Alumina</subject><subject>Aluminum Oxide - chemistry</subject><subject>Applied sciences</subject><subject>Calcium Compounds - chemistry</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Catalytic oxidation</subject><subject>Copper</subject><subject>Copper - chemistry</subject><subject>Cyclohexanols - chemistry</subject><subject>Exact sciences and technology</subject><subject>Hydrogen - chemistry</subject><subject>Nitrates - chemistry</subject><subject>Nitric Oxide - chemistry</subject><subject>Oxidation</subject><subject>Oxidation-Reduction</subject><subject>Oxides - chemistry</subject><subject>Oxygen - chemistry</subject><subject>Perovskite</subject><subject>Pollution</subject><subject>Remediation and Control Technologies</subject><subject>Soot - chemistry</subject><subject>Spectrum Analysis</subject><subject>Temperature</subject><subject>Titanium - chemistry</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpl0MFq3DAQBmBRWppt2kNfoJhCKT24nZEsW-otLElaWEhgU8hNjG0ZnHgtV2OH5O3jZJddSE5z0KefmV-Izwg_EST-8mwArLTqjViglpBqo_GtWACgSq3Kr4_EB-YbAJAKzHtxhMYaBRYX4nwZhsHHZEkjdQ88ctKEmKxDGJOL-7amsQ397-SkmzZtT8mdjzxxculjuOPbdvTJehqGEEf-KN411LH_tJvH4t_Z6dXyT7q6OP-7PFmllIEdU-VrAkUF5rKQFTa1tRIzzCpblllTaw2aDCida1NjQyiJskrmBVLTlFaX6lh83-YOMfyfPI9u03Llu456HyZ2Fp-_g5nl1xfyJkyxn5dzcwtzTTJTM_qxRVUMzNE3bojthuKDQ3BP3bp9t7P9sgucyo2vD3JX5gy-7QBxRV0Tqa9a3jsJhTUS89mlW9fy6O_37xRvXV6oQrury7XL12cary241SGXKj4c8XrBR_zdmlM</recordid><startdate>20081015</startdate><enddate>20081015</enddate><creator>López-Suárez, F. E</creator><creator>Bueno-López, A</creator><creator>Illán-Gómez, M. J</creator><creator>Adamski, A</creator><creator>Ura, B</creator><creator>Trawczynski, J</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20081015</creationdate><title>Copper Catalysts for Soot Oxidation: Alumina versus Perovskite Supports</title><author>López-Suárez, F. E ; Bueno-López, A ; Illán-Gómez, M. J ; Adamski, A ; Ura, B ; Trawczynski, J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a409t-3eda03a716272c1fd9921414c9bb4fd5505a8035658d1fa12aa4c2671affb95b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Alumina</topic><topic>Aluminum Oxide - chemistry</topic><topic>Applied sciences</topic><topic>Calcium Compounds - chemistry</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Catalytic oxidation</topic><topic>Copper</topic><topic>Copper - chemistry</topic><topic>Cyclohexanols - chemistry</topic><topic>Exact sciences and technology</topic><topic>Hydrogen - chemistry</topic><topic>Nitrates - chemistry</topic><topic>Nitric Oxide - chemistry</topic><topic>Oxidation</topic><topic>Oxidation-Reduction</topic><topic>Oxides - chemistry</topic><topic>Oxygen - chemistry</topic><topic>Perovskite</topic><topic>Pollution</topic><topic>Remediation and Control Technologies</topic><topic>Soot - chemistry</topic><topic>Spectrum Analysis</topic><topic>Temperature</topic><topic>Titanium - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>López-Suárez, F. E</creatorcontrib><creatorcontrib>Bueno-López, A</creatorcontrib><creatorcontrib>Illán-Gómez, M. J</creatorcontrib><creatorcontrib>Adamski, A</creatorcontrib><creatorcontrib>Ura, B</creatorcontrib><creatorcontrib>Trawczynski, J</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>López-Suárez, F. E</au><au>Bueno-López, A</au><au>Illán-Gómez, M. J</au><au>Adamski, A</au><au>Ura, B</au><au>Trawczynski, J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Copper Catalysts for Soot Oxidation: Alumina versus Perovskite Supports</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2008-10-15</date><risdate>2008</risdate><volume>42</volume><issue>20</issue><spage>7670</spage><epage>7675</epage><pages>7670-7675</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Copper catalysts prepared using four supports (Mg- and Sr-modified Al2O3 and MgTiO3 and SrTiO3 perovskites) have been tested for soot oxidation by O2 and NO x /O2. Among the catalysts studied, Cu/SrTiO3 is the most active for soot oxidation by NO x /O2 and the support affects positively copper activity. With this catalyst, and under the experimental conditions used, the soot combustion by NO x /O2 presents a considerable rate from 500 °C (100 °C below the uncatalysed reaction). The Cu/SrTiO3 catalyst is also the most effective for NO x chemisorption around 425 °C. The best activity of Cu/SrTiO3 can be attributed to the improved redox properties of copper originated by Cu-support interactions. This seems to be related to the presence of weakly bound oxygen on this sample. The copper species present in the catalyst Cu/SrTiO3 can be reduced more easily than those in other supports, and for this reason, this catalyst seems to be the most effective to convert NO into NO2, which explains its highest activity for soot oxidation.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>18983091</pmid><doi>10.1021/es8009293</doi><tpages>6</tpages></addata></record>
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subjects	Alumina Aluminum Oxide - chemistry Applied sciences Calcium Compounds - chemistry Catalysis Catalysts Catalytic oxidation Copper Copper - chemistry Cyclohexanols - chemistry Exact sciences and technology Hydrogen - chemistry Nitrates - chemistry Nitric Oxide - chemistry Oxidation Oxidation-Reduction Oxides - chemistry Oxygen - chemistry Perovskite Pollution Remediation and Control Technologies Soot - chemistry Spectrum Analysis Temperature Titanium - chemistry
title	Copper Catalysts for Soot Oxidation: Alumina versus Perovskite Supports
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