Reduction and catalytic behaviour of heterobimetallic copper–lanthanide oxides
The reduction of the heterobimetallic copper–lanthanide oxides 2CuO·CeO 2 and 3CuO·Ln 2CuO 4 (Ln = La, Pr, Nd) was studied by H 2-TG/DTA and H 2-TPR. All systems exhibit two main reduction steps accompanied by mass losses in the temperature range 20–1000 °C. The first step was attributed to CuO redu...
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| Veröffentlicht in: | Journal of alloys and compounds 2008-09, Vol.464 (1), p.399-406 |
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| container_title | Journal of alloys and compounds |
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| creator | Branco, Joaquim Badalo Ballivet-Tkatchenko, Danielle Matos, António Pires de |
| description | The reduction of the heterobimetallic copper–lanthanide oxides 2CuO·CeO
2 and 3CuO·Ln
2CuO
4 (Ln
=
La, Pr, Nd) was studied by H
2-TG/DTA and H
2-TPR. All systems exhibit two main reduction steps accompanied by mass losses in the temperature range 20–1000
°C. The first step was attributed to CuO reduction, whereas the second step is due either to copper reduction in the Ln
2CuO
4 phase with the concomitant formation of Ln
2O
3 or to the surface reduction of CeO
2. The products were characterized by XRD, SEM, EDX, and BET techniques and are better described as supported copper type materials. They were active for the mesityl oxide (4-methyl-2-penten-2-one) gas phase hydrogenation. |
| doi_str_mv | 10.1016/j.jallcom.2007.10.001 |
| format | Article |
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2 and 3CuO·Ln
2CuO
4 (Ln
=
La, Pr, Nd) was studied by H
2-TG/DTA and H
2-TPR. All systems exhibit two main reduction steps accompanied by mass losses in the temperature range 20–1000
°C. The first step was attributed to CuO reduction, whereas the second step is due either to copper reduction in the Ln
2CuO
4 phase with the concomitant formation of Ln
2O
3 or to the surface reduction of CeO
2. The products were characterized by XRD, SEM, EDX, and BET techniques and are better described as supported copper type materials. They were active for the mesityl oxide (4-methyl-2-penten-2-one) gas phase hydrogenation.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2007.10.001</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Catalysis ; Chemical Sciences ; Chemistry ; Exact sciences and technology ; General and physical chemistry ; Heterobimetallic copper–lanthanide oxides ; Inorganic chemistry ; Intermetallic compounds ; Mesityl oxide hydrogenation ; Reduction studies ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Journal of alloys and compounds, 2008-09, Vol.464 (1), p.399-406</ispartof><rights>2007 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-35d250eae784ae052fef3a01be9dec770a4c9f8eb7bd8504f2f3fb945ec5f9203</citedby><cites>FETCH-LOGICAL-c404t-35d250eae784ae052fef3a01be9dec770a4c9f8eb7bd8504f2f3fb945ec5f9203</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2007.10.001$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20659968$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-00469885$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Branco, Joaquim Badalo</creatorcontrib><creatorcontrib>Ballivet-Tkatchenko, Danielle</creatorcontrib><creatorcontrib>Matos, António Pires de</creatorcontrib><title>Reduction and catalytic behaviour of heterobimetallic copper–lanthanide oxides</title><title>Journal of alloys and compounds</title><description>The reduction of the heterobimetallic copper–lanthanide oxides 2CuO·CeO
2 and 3CuO·Ln
2CuO
4 (Ln
=
La, Pr, Nd) was studied by H
2-TG/DTA and H
2-TPR. All systems exhibit two main reduction steps accompanied by mass losses in the temperature range 20–1000
°C. The first step was attributed to CuO reduction, whereas the second step is due either to copper reduction in the Ln
2CuO
4 phase with the concomitant formation of Ln
2O
3 or to the surface reduction of CeO
2. The products were characterized by XRD, SEM, EDX, and BET techniques and are better described as supported copper type materials. They were active for the mesityl oxide (4-methyl-2-penten-2-one) gas phase hydrogenation.</description><subject>Catalysis</subject><subject>Chemical Sciences</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heterobimetallic copper–lanthanide oxides</subject><subject>Inorganic chemistry</subject><subject>Intermetallic compounds</subject><subject>Mesityl oxide hydrogenation</subject><subject>Reduction studies</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkM9qGzEQh0VpoG7SRyjspYUe1h2tVrvSqYSQJgVDQmnPYlY7wjLyypXWJrn1HfqGfZLK2OTaiwS_-eYPH2PvOSw58O7zZrnBEGzcLhuAvmRLAP6KLbjqRd12nX7NFqAbWSuh1Bv2NucNFEILvmCP32nc29nHqcJprCzOGJ5nb6uB1njwcZ-q6Ko1zZTi4LdUyqFUbdztKP39_SfgNK9x8iNV8am8-YpdOAyZ3p3_S_bz6-2Pm_t69XD37eZ6VdsW2rkWcmwkEFKvWiSQjSMnEPhAeiTb94Ct1U7R0A-jktC6xgk36FaSlU43IC7Zp9PcNQazS36L6dlE9Ob-emWOGUDbaaXkgRf244ndpfhrT3k2W58thXI8xX02QnKuhJQFlCfQpphzIvcymYM5ujYbc3Ztjq6PcTFZ-j6cF2C2GFzCyfr80txAJ7XuVOG-nDgqZg6eksnW02Rp9InsbMbo_7PpHxJ1mZw</recordid><startdate>20080922</startdate><enddate>20080922</enddate><creator>Branco, Joaquim Badalo</creator><creator>Ballivet-Tkatchenko, Danielle</creator><creator>Matos, António Pires de</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8G</scope><scope>JG9</scope><scope>1XC</scope></search><sort><creationdate>20080922</creationdate><title>Reduction and catalytic behaviour of heterobimetallic copper–lanthanide oxides</title><author>Branco, Joaquim Badalo ; Ballivet-Tkatchenko, Danielle ; Matos, António Pires de</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-35d250eae784ae052fef3a01be9dec770a4c9f8eb7bd8504f2f3fb945ec5f9203</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Catalysis</topic><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Heterobimetallic copper–lanthanide oxides</topic><topic>Inorganic chemistry</topic><topic>Intermetallic compounds</topic><topic>Mesityl oxide hydrogenation</topic><topic>Reduction studies</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Branco, Joaquim Badalo</creatorcontrib><creatorcontrib>Ballivet-Tkatchenko, Danielle</creatorcontrib><creatorcontrib>Matos, António Pires de</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Branco, Joaquim Badalo</au><au>Ballivet-Tkatchenko, Danielle</au><au>Matos, António Pires de</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reduction and catalytic behaviour of heterobimetallic copper–lanthanide oxides</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2008-09-22</date><risdate>2008</risdate><volume>464</volume><issue>1</issue><spage>399</spage><epage>406</epage><pages>399-406</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The reduction of the heterobimetallic copper–lanthanide oxides 2CuO·CeO
2 and 3CuO·Ln
2CuO
4 (Ln
=
La, Pr, Nd) was studied by H
2-TG/DTA and H
2-TPR. All systems exhibit two main reduction steps accompanied by mass losses in the temperature range 20–1000
°C. The first step was attributed to CuO reduction, whereas the second step is due either to copper reduction in the Ln
2CuO
4 phase with the concomitant formation of Ln
2O
3 or to the surface reduction of CeO
2. The products were characterized by XRD, SEM, EDX, and BET techniques and are better described as supported copper type materials. They were active for the mesityl oxide (4-methyl-2-penten-2-one) gas phase hydrogenation.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2007.10.001</doi><tpages>8</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Catalysis Chemical Sciences Chemistry Exact sciences and technology General and physical chemistry Heterobimetallic copper–lanthanide oxides Inorganic chemistry Intermetallic compounds Mesityl oxide hydrogenation Reduction studies Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Reduction and catalytic behaviour of heterobimetallic copper–lanthanide oxides |
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