The role of water in ethanol oxidation over SnO2-supported molybdenum oxides
The role of water in the oxidation of ethanol to acetic acid on Sn–Mo–O catalysts was studied by catalytic test and FTIR spectroscopy of adsorbed species. The reaction showed a typical behavior of series reactions involving oxidation of ethanol to acetaldehyde and of the latter to acetic acid and CO...
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| Veröffentlicht in: | Catalysis letters 2000-01, Vol.69 (1-2), p.79-82 |
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| creator | MEDEIROSA, Paulo R. S EON, Jean G APPEL, Lucia G |
| description | The role of water in the oxidation of ethanol to acetic acid on Sn–Mo–O catalysts was studied by catalytic test and FTIR spectroscopy of adsorbed species. The reaction showed a typical behavior of series reactions involving oxidation of ethanol to acetaldehyde and of the latter to acetic acid and CO2. Addition of water to the feed gas decreased the oxidation rate and significantly increased the selectivity to acetic acid, strongly contributing to decreasing the number of secondary products. FTIR analyses showed that water promotes desorption of ethanol and carboxylates, present as bridging and monodentate species. Decreasing catalytic rate values and increasing selectivity to acetic acid in the presence of water follow from site blocking by hydroxyl groups. |
| doi_str_mv | 10.1023/A:1019093116966 |
| format | Article |
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S ; EON, Jean G ; APPEL, Lucia G</creator><creatorcontrib>MEDEIROSA, Paulo R. S ; EON, Jean G ; APPEL, Lucia G</creatorcontrib><description>The role of water in the oxidation of ethanol to acetic acid on Sn–Mo–O catalysts was studied by catalytic test and FTIR spectroscopy of adsorbed species. The reaction showed a typical behavior of series reactions involving oxidation of ethanol to acetaldehyde and of the latter to acetic acid and CO2. Addition of water to the feed gas decreased the oxidation rate and significantly increased the selectivity to acetic acid, strongly contributing to decreasing the number of secondary products. FTIR analyses showed that water promotes desorption of ethanol and carboxylates, present as bridging and monodentate species. Decreasing catalytic rate values and increasing selectivity to acetic acid in the presence of water follow from site blocking by hydroxyl groups.</description><identifier>ISSN: 1011-372X</identifier><identifier>EISSN: 1572-879X</identifier><identifier>DOI: 10.1023/A:1019093116966</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Acetaldehyde ; Acetic acid ; Acids ; Carboxylates ; Catalysis ; Catalytic reactions ; Chemistry ; Ethanol ; Exact sciences and technology ; General and physical chemistry ; Hydroxyl groups ; Infrared spectroscopy ; Molybdenum oxides ; Oxidation ; Oxidation rate ; Selectivity ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; Tin dioxide</subject><ispartof>Catalysis letters, 2000-01, Vol.69 (1-2), p.79-82</ispartof><rights>2001 INIST-CNRS</rights><rights>Catalysis Letters is a copyright of Springer, (2000). 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S</creatorcontrib><creatorcontrib>EON, Jean G</creatorcontrib><creatorcontrib>APPEL, Lucia G</creatorcontrib><title>The role of water in ethanol oxidation over SnO2-supported molybdenum oxides</title><title>Catalysis letters</title><description>The role of water in the oxidation of ethanol to acetic acid on Sn–Mo–O catalysts was studied by catalytic test and FTIR spectroscopy of adsorbed species. The reaction showed a typical behavior of series reactions involving oxidation of ethanol to acetaldehyde and of the latter to acetic acid and CO2. Addition of water to the feed gas decreased the oxidation rate and significantly increased the selectivity to acetic acid, strongly contributing to decreasing the number of secondary products. FTIR analyses showed that water promotes desorption of ethanol and carboxylates, present as bridging and monodentate species. Decreasing catalytic rate values and increasing selectivity to acetic acid in the presence of water follow from site blocking by hydroxyl groups.</description><subject>Acetaldehyde</subject><subject>Acetic acid</subject><subject>Acids</subject><subject>Carboxylates</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Chemistry</subject><subject>Ethanol</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Hydroxyl groups</subject><subject>Infrared spectroscopy</subject><subject>Molybdenum oxides</subject><subject>Oxidation</subject><subject>Oxidation rate</subject><subject>Selectivity</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><subject>Tin dioxide</subject><issn>1011-372X</issn><issn>1572-879X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpNjUtLAzEUhYMoWKtrtwHXo3k0k1x3pfiCQhdW6G7IJDd0ynQyJjNq_71FXbg6H5yPcwi55uyWMyHv5veccWAgOS-hLE_IhCstCqNhc3pkxnkhtdick4ucd4wx0BwmZLneIk2xRRoD_bQDJtp0FIet7WJL41fj7dDEjsaPY_ParUSRx76PaUBP97E91B67cf8jYr4kZ8G2Ga_-ckreHh_Wi-diuXp6WcyXhRNKDYXTyqDhTjgA5EI7zmv0wYFECcFb7Q3Y2pRovPM-MF_LWivmSkQdpKnllNz87vYpvo-Yh2oXx9QdLyshlAGYwUz9s2x2tg3Jdq7JVZ-avU2HSoMWSstvgeJdrw</recordid><startdate>20000101</startdate><enddate>20000101</enddate><creator>MEDEIROSA, Paulo R. S</creator><creator>EON, Jean G</creator><creator>APPEL, Lucia G</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20000101</creationdate><title>The role of water in ethanol oxidation over SnO2-supported molybdenum oxides</title><author>MEDEIROSA, Paulo R. 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Nomenclature, chemical documentation, computer chemistry</topic><topic>Tin dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MEDEIROSA, Paulo R. 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FTIR analyses showed that water promotes desorption of ethanol and carboxylates, present as bridging and monodentate species. Decreasing catalytic rate values and increasing selectivity to acetic acid in the presence of water follow from site blocking by hydroxyl groups.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1023/A:1019093116966</doi><tpages>4</tpages></addata></record> |
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| subjects | Acetaldehyde Acetic acid Acids Carboxylates Catalysis Catalytic reactions Chemistry Ethanol Exact sciences and technology General and physical chemistry Hydroxyl groups Infrared spectroscopy Molybdenum oxides Oxidation Oxidation rate Selectivity Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Tin dioxide |
| title | The role of water in ethanol oxidation over SnO2-supported molybdenum oxides |
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