Mg–Fe Hydrotalcite as a Catalyst for the Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate
Catalysts consisting of mixed oxides of Fe3+ and Mg2+ were prepared by decarbonation of Mg–Fe hydrotalcite-like precursors. They show high activity and selectivity for the selective reduction of aromatic nitro compounds under mild reaction conditions. They are regenerable and can be recycled without...
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| Veröffentlicht in: | Journal of catalysis 2000-04, Vol.191 (2), p.467-473 |
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| container_title | Journal of catalysis |
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| creator | Kumbhar, Pramod S. Sanchez-Valente, Jaime Millet, Jean Marc M. Figueras, François |
| description | Catalysts consisting of mixed oxides of Fe3+ and Mg2+ were prepared by decarbonation of Mg–Fe hydrotalcite-like precursors. They show high activity and selectivity for the selective reduction of aromatic nitro compounds under mild reaction conditions. They are regenerable and can be recycled without any loss of activity. The solids were characterized by XRD, XPS, and Mössbauer spectroscopy. From Mössbauer spectroscopy the solid appears as a well-dispersed ferrihydrite phase supported by a MgFeO matrix, and only Fe3+ ions in ferrihydrite can be reversibly reduced by hydrazine and reoxidized by the nitro compound. This observation and the value of the slope of the Hammett plot suggest that the mechanism is similar to that reported for iron oxides. The activity is proportional to the fractional surface of iron oxide, and at equal surface area, MgFe oxides are more active than iron oxides and form negligible amounts of hydroxylamine intermediates. |
| doi_str_mv | 10.1006/jcat.2000.2827 |
| format | Article |
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They show high activity and selectivity for the selective reduction of aromatic nitro compounds under mild reaction conditions. They are regenerable and can be recycled without any loss of activity. The solids were characterized by XRD, XPS, and Mössbauer spectroscopy. From Mössbauer spectroscopy the solid appears as a well-dispersed ferrihydrite phase supported by a MgFeO matrix, and only Fe3+ ions in ferrihydrite can be reversibly reduced by hydrazine and reoxidized by the nitro compound. This observation and the value of the slope of the Hammett plot suggest that the mechanism is similar to that reported for iron oxides. The activity is proportional to the fractional surface of iron oxide, and at equal surface area, MgFe oxides are more active than iron oxides and form negligible amounts of hydroxylamine intermediates.</description><identifier>ISSN: 0021-9517</identifier><identifier>EISSN: 1090-2694</identifier><identifier>DOI: 10.1006/jcat.2000.2827</identifier><identifier>CODEN: JCTLA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Catalysis ; Catalysts: preparations and properties ; CATALYTIC EFFECTS ; CHEMICAL PREPARATION ; CHEMICAL REACTION KINETICS ; Chemical Sciences ; Chemistry ; ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ; Exact sciences and technology ; General and physical chemistry ; H-transfer catalysis ; hydrazine hydrate ; hydrotalcites ; IRON OXIDES ; MAGNESIUM OXIDES ; Mössbauer spectroscopy ; nitro aromatics ; NITRO COMPOUNDS ; SELECTIVE CATALYTIC REDUCTION ; selective hydrogenation ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Journal of catalysis, 2000-04, Vol.191 (2), p.467-473</ispartof><rights>2000 Academic Press</rights><rights>2000 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-c377t-277e87794ef0f19b6ca554793bace9f22f7734f59268bd6a60a77b523c8b44783</citedby><cites>FETCH-LOGICAL-c377t-277e87794ef0f19b6ca554793bace9f22f7734f59268bd6a60a77b523c8b44783</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1006/jcat.2000.2827$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,315,781,785,886,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1361655$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-00007009$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/20030527$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kumbhar, Pramod S.</creatorcontrib><creatorcontrib>Sanchez-Valente, Jaime</creatorcontrib><creatorcontrib>Millet, Jean Marc M.</creatorcontrib><creatorcontrib>Figueras, François</creatorcontrib><creatorcontrib>Inst. de Recherches sur la Catalyse, Villeurbanne (FR)</creatorcontrib><title>Mg–Fe Hydrotalcite as a Catalyst for the Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate</title><title>Journal of catalysis</title><description>Catalysts consisting of mixed oxides of Fe3+ and Mg2+ were prepared by decarbonation of Mg–Fe hydrotalcite-like precursors. They show high activity and selectivity for the selective reduction of aromatic nitro compounds under mild reaction conditions. They are regenerable and can be recycled without any loss of activity. The solids were characterized by XRD, XPS, and Mössbauer spectroscopy. From Mössbauer spectroscopy the solid appears as a well-dispersed ferrihydrite phase supported by a MgFeO matrix, and only Fe3+ ions in ferrihydrite can be reversibly reduced by hydrazine and reoxidized by the nitro compound. This observation and the value of the slope of the Hammett plot suggest that the mechanism is similar to that reported for iron oxides. The activity is proportional to the fractional surface of iron oxide, and at equal surface area, MgFe oxides are more active than iron oxides and form negligible amounts of hydroxylamine intermediates.</description><subject>Catalysis</subject><subject>Catalysts: preparations and properties</subject><subject>CATALYTIC EFFECTS</subject><subject>CHEMICAL PREPARATION</subject><subject>CHEMICAL REACTION KINETICS</subject><subject>Chemical Sciences</subject><subject>Chemistry</subject><subject>ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>H-transfer catalysis</subject><subject>hydrazine hydrate</subject><subject>hydrotalcites</subject><subject>IRON OXIDES</subject><subject>MAGNESIUM OXIDES</subject><subject>Mössbauer spectroscopy</subject><subject>nitro aromatics</subject><subject>NITRO COMPOUNDS</subject><subject>SELECTIVE CATALYTIC REDUCTION</subject><subject>selective hydrogenation</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>0021-9517</issn><issn>1090-2694</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNp1kMFO3DAURa0KpA7QbdeW2g2LTJ-dOI6Xo1HpIE1BQnRtvTg2YzQTj2xDNaz6D_xhv4SEVGXFyrJ17vV7h5DPDOYMoP52bzDPOQDMecPlBzJjoKDgtaqOyAyAs0IJJj-Sk5TuARgTopmRu593f_88X1i6OnQxZNwany3FRJEucbgeUqYuRJo3lt7Y7sFkH3oaHF3EsMPsDb3yOQa6DLt9eOi7RH_7vHltwyffT72Y7Rk5drhN9tO_85T8uvh-u1wV6-sfl8vFujCllLngUtpGSlVZB46ptjYoRCVV2aKxynHupCwrJxSvm7arsQaUshW8NE1bVbIpT8mXqTek7HUatzEbE_remqwHOSUILgfqfKI2uNX76HcYDzqg16vFWo9vg0WQAOqRDex8Yk0MKUXr_gcY6FG8HsWP3aBH8UPg6xTYYzK4dRF749NbqqxZLcSANRNmBx2P3sZxWtsb2_k4DtsF_94PL2eOle4</recordid><startdate>20000425</startdate><enddate>20000425</enddate><creator>Kumbhar, Pramod S.</creator><creator>Sanchez-Valente, Jaime</creator><creator>Millet, Jean Marc M.</creator><creator>Figueras, François</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>OTOTI</scope></search><sort><creationdate>20000425</creationdate><title>Mg–Fe Hydrotalcite as a Catalyst for the Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate</title><author>Kumbhar, Pramod S. ; Sanchez-Valente, Jaime ; Millet, Jean Marc M. ; Figueras, François</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c377t-277e87794ef0f19b6ca554793bace9f22f7734f59268bd6a60a77b523c8b44783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Catalysis</topic><topic>Catalysts: preparations and properties</topic><topic>CATALYTIC EFFECTS</topic><topic>CHEMICAL PREPARATION</topic><topic>CHEMICAL REACTION KINETICS</topic><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>H-transfer catalysis</topic><topic>hydrazine hydrate</topic><topic>hydrotalcites</topic><topic>IRON OXIDES</topic><topic>MAGNESIUM OXIDES</topic><topic>Mössbauer spectroscopy</topic><topic>nitro aromatics</topic><topic>NITRO COMPOUNDS</topic><topic>SELECTIVE CATALYTIC REDUCTION</topic><topic>selective hydrogenation</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kumbhar, Pramod S.</creatorcontrib><creatorcontrib>Sanchez-Valente, Jaime</creatorcontrib><creatorcontrib>Millet, Jean Marc M.</creatorcontrib><creatorcontrib>Figueras, François</creatorcontrib><creatorcontrib>Inst. de Recherches sur la Catalyse, Villeurbanne (FR)</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>Journal of catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kumbhar, Pramod S.</au><au>Sanchez-Valente, Jaime</au><au>Millet, Jean Marc M.</au><au>Figueras, François</au><aucorp>Inst. de Recherches sur la Catalyse, Villeurbanne (FR)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mg–Fe Hydrotalcite as a Catalyst for the Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate</atitle><jtitle>Journal of catalysis</jtitle><date>2000-04-25</date><risdate>2000</risdate><volume>191</volume><issue>2</issue><spage>467</spage><epage>473</epage><pages>467-473</pages><issn>0021-9517</issn><eissn>1090-2694</eissn><coden>JCTLA5</coden><abstract>Catalysts consisting of mixed oxides of Fe3+ and Mg2+ were prepared by decarbonation of Mg–Fe hydrotalcite-like precursors. They show high activity and selectivity for the selective reduction of aromatic nitro compounds under mild reaction conditions. They are regenerable and can be recycled without any loss of activity. The solids were characterized by XRD, XPS, and Mössbauer spectroscopy. From Mössbauer spectroscopy the solid appears as a well-dispersed ferrihydrite phase supported by a MgFeO matrix, and only Fe3+ ions in ferrihydrite can be reversibly reduced by hydrazine and reoxidized by the nitro compound. This observation and the value of the slope of the Hammett plot suggest that the mechanism is similar to that reported for iron oxides. The activity is proportional to the fractional surface of iron oxide, and at equal surface area, MgFe oxides are more active than iron oxides and form negligible amounts of hydroxylamine intermediates.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1006/jcat.2000.2827</doi><tpages>7</tpages></addata></record> |
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| subjects | Catalysis Catalysts: preparations and properties CATALYTIC EFFECTS CHEMICAL PREPARATION CHEMICAL REACTION KINETICS Chemical Sciences Chemistry ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION Exact sciences and technology General and physical chemistry H-transfer catalysis hydrazine hydrate hydrotalcites IRON OXIDES MAGNESIUM OXIDES Mössbauer spectroscopy nitro aromatics NITRO COMPOUNDS SELECTIVE CATALYTIC REDUCTION selective hydrogenation Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Mg–Fe Hydrotalcite as a Catalyst for the Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate |
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