CO Oxidation on Pd/Al2O3 Catalysts under Stoichiometric Conditions
This paper deals with the CO oxidation on Pd/Al 2 O 3 catalysts under stoichiometric conditions relevant for the after-treatment of gasoline exhaust. A series of catalysts was prepared by incipient wetness impregnation, whereas the Pd load was systematically varied from 0.1 to 5 wt%. The samples wer...
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| Veröffentlicht in: | Topics in catalysis 2017-03, Vol.60 (3-5), p.260-265 |
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| container_title | Topics in catalysis |
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| creator | Phan, Dai Quy Kureti, Sven |
| description | This paper deals with the CO oxidation on Pd/Al
2
O
3
catalysts under stoichiometric conditions relevant for the after-treatment of gasoline exhaust. A series of catalysts was prepared by incipient wetness impregnation, whereas the Pd load was systematically varied from 0.1 to 5 wt%. The samples were physical-chemically characterized by using N
2
physisorption (BET, BJH), powder X-ray diffraction (PXRD), temperature programmed desorption of H
2
(HTPD), temperature programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). The performance of the powder catalysts was evaluated on a laboratory test bench employing a simple gasoline model exhaust with stoichiometric CO and O
2
fractions. From the characterization data it was deduced that the Pd dispersion of the catalysts decreases with precious metal load corresponding to increase in mean Pd particle size going up from ca. 5–12 nm. The correlation of the physical–chemical characteristics with the CO oxidation activity of the Pd/Al
2
O
3
samples clearly indicated that the catalytic efficiency was predominately driven by the number of active Pd sites, whereas no size effect of the Pd entities was found. |
| doi_str_mv | 10.1007/s11244-016-0608-9 |
| format | Article |
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2
O
3
catalysts under stoichiometric conditions relevant for the after-treatment of gasoline exhaust. A series of catalysts was prepared by incipient wetness impregnation, whereas the Pd load was systematically varied from 0.1 to 5 wt%. The samples were physical-chemically characterized by using N
2
physisorption (BET, BJH), powder X-ray diffraction (PXRD), temperature programmed desorption of H
2
(HTPD), temperature programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). The performance of the powder catalysts was evaluated on a laboratory test bench employing a simple gasoline model exhaust with stoichiometric CO and O
2
fractions. From the characterization data it was deduced that the Pd dispersion of the catalysts decreases with precious metal load corresponding to increase in mean Pd particle size going up from ca. 5–12 nm. The correlation of the physical–chemical characteristics with the CO oxidation activity of the Pd/Al
2
O
3
samples clearly indicated that the catalytic efficiency was predominately driven by the number of active Pd sites, whereas no size effect of the Pd entities was found.</description><identifier>ISSN: 1022-5528</identifier><identifier>EISSN: 1572-9028</identifier><identifier>DOI: 10.1007/s11244-016-0608-9</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Aluminum oxide ; Carbon monoxide ; Catalysis ; Catalysts ; Characterization and Evaluation of Materials ; Chemical activity ; Chemistry ; Chemistry and Materials Science ; Desorption ; Exhaust gases ; Exhaust systems ; Gasoline ; Industrial Chemistry/Chemical Engineering ; Original Paper ; Oxidation ; Palladium ; Pharmacy ; Physical Chemistry ; Size effects ; Stoichiometry ; X ray powder diffraction</subject><ispartof>Topics in catalysis, 2017-03, Vol.60 (3-5), p.260-265</ispartof><rights>Springer Science+Business Media New York 2016</rights><rights>Copyright Springer Science & Business Media 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c419t-f047e46ba5aa316f843f8436cf17523579dfbab7b18dcf4f9ea45bb6c6056dc33</citedby><cites>FETCH-LOGICAL-c419t-f047e46ba5aa316f843f8436cf17523579dfbab7b18dcf4f9ea45bb6c6056dc33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11244-016-0608-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11244-016-0608-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Phan, Dai Quy</creatorcontrib><creatorcontrib>Kureti, Sven</creatorcontrib><title>CO Oxidation on Pd/Al2O3 Catalysts under Stoichiometric Conditions</title><title>Topics in catalysis</title><addtitle>Top Catal</addtitle><description>This paper deals with the CO oxidation on Pd/Al
2
O
3
catalysts under stoichiometric conditions relevant for the after-treatment of gasoline exhaust. A series of catalysts was prepared by incipient wetness impregnation, whereas the Pd load was systematically varied from 0.1 to 5 wt%. The samples were physical-chemically characterized by using N
2
physisorption (BET, BJH), powder X-ray diffraction (PXRD), temperature programmed desorption of H
2
(HTPD), temperature programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). The performance of the powder catalysts was evaluated on a laboratory test bench employing a simple gasoline model exhaust with stoichiometric CO and O
2
fractions. From the characterization data it was deduced that the Pd dispersion of the catalysts decreases with precious metal load corresponding to increase in mean Pd particle size going up from ca. 5–12 nm. The correlation of the physical–chemical characteristics with the CO oxidation activity of the Pd/Al
2
O
3
samples clearly indicated that the catalytic efficiency was predominately driven by the number of active Pd sites, whereas no size effect of the Pd entities was found.</description><subject>Aluminum oxide</subject><subject>Carbon monoxide</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemical activity</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Desorption</subject><subject>Exhaust gases</subject><subject>Exhaust systems</subject><subject>Gasoline</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Original Paper</subject><subject>Oxidation</subject><subject>Palladium</subject><subject>Pharmacy</subject><subject>Physical Chemistry</subject><subject>Size effects</subject><subject>Stoichiometry</subject><subject>X ray powder diffraction</subject><issn>1022-5528</issn><issn>1572-9028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LxDAQhoMouK7-AG8Fz3Hznea4Fr9goYJ6Dmk-NEu3XZMuuP_elnrwIswwc3ifGXgAuMboFiMkVxljwhhEWEAkUAnVCVhgLglUiJSn444IgZyT8hxc5LxFiGCp1ALcVXVRf0dnhth3xVgvbrVuSU2LygymPeYhF4fO-VS8Dn20n7Hf-SFFW1R95-IE5UtwFkyb_dXvXIL3h_u36glu6sfnar2BlmE1wICY9Ew0hhtDsQglo1MLG7DkhHKpXGhMIxtcOhtYUN4w3jTCCsSFs5Quwc18d5_6r4PPg972h9SNLzUuS8oVFVyOKTynbOpzTj7ofYo7k44aIz2p0rMqParSkyqtRobMTB6z3YdPfy7_C_0ABYFq5w</recordid><startdate>20170301</startdate><enddate>20170301</enddate><creator>Phan, Dai Quy</creator><creator>Kureti, Sven</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20170301</creationdate><title>CO Oxidation on Pd/Al2O3 Catalysts under Stoichiometric Conditions</title><author>Phan, Dai Quy ; Kureti, Sven</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c419t-f047e46ba5aa316f843f8436cf17523579dfbab7b18dcf4f9ea45bb6c6056dc33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Aluminum oxide</topic><topic>Carbon monoxide</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemical activity</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Desorption</topic><topic>Exhaust gases</topic><topic>Exhaust systems</topic><topic>Gasoline</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Original Paper</topic><topic>Oxidation</topic><topic>Palladium</topic><topic>Pharmacy</topic><topic>Physical Chemistry</topic><topic>Size effects</topic><topic>Stoichiometry</topic><topic>X ray powder diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Phan, Dai Quy</creatorcontrib><creatorcontrib>Kureti, Sven</creatorcontrib><collection>CrossRef</collection><jtitle>Topics in catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Phan, Dai Quy</au><au>Kureti, Sven</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>CO Oxidation on Pd/Al2O3 Catalysts under Stoichiometric Conditions</atitle><jtitle>Topics in catalysis</jtitle><stitle>Top Catal</stitle><date>2017-03-01</date><risdate>2017</risdate><volume>60</volume><issue>3-5</issue><spage>260</spage><epage>265</epage><pages>260-265</pages><issn>1022-5528</issn><eissn>1572-9028</eissn><abstract>This paper deals with the CO oxidation on Pd/Al
2
O
3
catalysts under stoichiometric conditions relevant for the after-treatment of gasoline exhaust. A series of catalysts was prepared by incipient wetness impregnation, whereas the Pd load was systematically varied from 0.1 to 5 wt%. The samples were physical-chemically characterized by using N
2
physisorption (BET, BJH), powder X-ray diffraction (PXRD), temperature programmed desorption of H
2
(HTPD), temperature programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). The performance of the powder catalysts was evaluated on a laboratory test bench employing a simple gasoline model exhaust with stoichiometric CO and O
2
fractions. From the characterization data it was deduced that the Pd dispersion of the catalysts decreases with precious metal load corresponding to increase in mean Pd particle size going up from ca. 5–12 nm. The correlation of the physical–chemical characteristics with the CO oxidation activity of the Pd/Al
2
O
3
samples clearly indicated that the catalytic efficiency was predominately driven by the number of active Pd sites, whereas no size effect of the Pd entities was found.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11244-016-0608-9</doi><tpages>6</tpages></addata></record> |
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| language | eng |
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| subjects | Aluminum oxide Carbon monoxide Catalysis Catalysts Characterization and Evaluation of Materials Chemical activity Chemistry Chemistry and Materials Science Desorption Exhaust gases Exhaust systems Gasoline Industrial Chemistry/Chemical Engineering Original Paper Oxidation Palladium Pharmacy Physical Chemistry Size effects Stoichiometry X ray powder diffraction |
| title | CO Oxidation on Pd/Al2O3 Catalysts under Stoichiometric Conditions |
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