Tailoring the activity and selectivity of Rh/SiO2 for the selective hydrogenation of phenol by CoOx promotion
Although supported Rh nanoparticles (NPs) are one of the best catalysts for the selective hydrogenation of phenol to cyclohexanol, they still suffer from poor selectivity problems. In this study, we promoted the selectivity of Rh NPs with CoOx through an in situ transformation of the bimetallic RhCo...
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| Veröffentlicht in: | Catalysis science & technology 2022-04, Vol.12 (7), p.2257-2264 |
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| container_title | Catalysis science & technology |
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| creator | Zhang, Fei Wu, Chunzheng Wang, Shuibo Wang, Shiwei Li, Tong Zou, Laixi Yu, Hongbo Yin, Hongfeng |
| description | Although supported Rh nanoparticles (NPs) are one of the best catalysts for the selective hydrogenation of phenol to cyclohexanol, they still suffer from poor selectivity problems. In this study, we promoted the selectivity of Rh NPs with CoOx through an in situ transformation of the bimetallic RhCo NPs on SiO2. Among the obtained Rh–CoOx/SiO2 catalysts, the one with a Co/Rh molar ratio of 1/3 exhibited the highest phenol conversion (i.e., 98.1%) and the highest selectivity to cyclohexanol (i.e., 99.4%). Our study showed that CoOx promoters modified the electronic states of Rh and created new active sites at their interface, which are beneficial to the activation of phenol and the desorption of cyclohexanol. Excessive coverage of Rh by CoOx, however, would cause deactivation due to the less exposure of the Rh–CoOx interface. |
| doi_str_mv | 10.1039/d1cy02324a |
| format | Article |
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In this study, we promoted the selectivity of Rh NPs with CoOx through an in situ transformation of the bimetallic RhCo NPs on SiO2. Among the obtained Rh–CoOx/SiO2 catalysts, the one with a Co/Rh molar ratio of 1/3 exhibited the highest phenol conversion (i.e., 98.1%) and the highest selectivity to cyclohexanol (i.e., 99.4%). Our study showed that CoOx promoters modified the electronic states of Rh and created new active sites at their interface, which are beneficial to the activation of phenol and the desorption of cyclohexanol. Excessive coverage of Rh by CoOx, however, would cause deactivation due to the less exposure of the Rh–CoOx interface.</description><identifier>ISSN: 2044-4753</identifier><identifier>EISSN: 2044-4761</identifier><identifier>DOI: 10.1039/d1cy02324a</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Bimetals ; Catalysts ; Cobalt oxides ; Electron states ; Hydrogenation ; Nanoparticles ; Phenols ; Rhodium ; Selectivity ; Silicon dioxide</subject><ispartof>Catalysis science & technology, 2022-04, Vol.12 (7), p.2257-2264</ispartof><rights>Copyright Royal Society of Chemistry 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhang, Fei</creatorcontrib><creatorcontrib>Wu, Chunzheng</creatorcontrib><creatorcontrib>Wang, Shuibo</creatorcontrib><creatorcontrib>Wang, Shiwei</creatorcontrib><creatorcontrib>Li, Tong</creatorcontrib><creatorcontrib>Zou, Laixi</creatorcontrib><creatorcontrib>Yu, Hongbo</creatorcontrib><creatorcontrib>Yin, Hongfeng</creatorcontrib><title>Tailoring the activity and selectivity of Rh/SiO2 for the selective hydrogenation of phenol by CoOx promotion</title><title>Catalysis science & technology</title><description>Although supported Rh nanoparticles (NPs) are one of the best catalysts for the selective hydrogenation of phenol to cyclohexanol, they still suffer from poor selectivity problems. In this study, we promoted the selectivity of Rh NPs with CoOx through an in situ transformation of the bimetallic RhCo NPs on SiO2. Among the obtained Rh–CoOx/SiO2 catalysts, the one with a Co/Rh molar ratio of 1/3 exhibited the highest phenol conversion (i.e., 98.1%) and the highest selectivity to cyclohexanol (i.e., 99.4%). Our study showed that CoOx promoters modified the electronic states of Rh and created new active sites at their interface, which are beneficial to the activation of phenol and the desorption of cyclohexanol. Excessive coverage of Rh by CoOx, however, would cause deactivation due to the less exposure of the Rh–CoOx interface.</description><subject>Bimetals</subject><subject>Catalysts</subject><subject>Cobalt oxides</subject><subject>Electron states</subject><subject>Hydrogenation</subject><subject>Nanoparticles</subject><subject>Phenols</subject><subject>Rhodium</subject><subject>Selectivity</subject><subject>Silicon dioxide</subject><issn>2044-4753</issn><issn>2044-4761</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNo9UF1Lw0AQPETBUvviLzjwOfa-ch-PEvwoFAJan8smt2lS0lxMUjH_3lSt-zI7zLCzDCG3nN1zJt3S83xkQgoFF2QmmFKRMppf_u-xvCaLvt-zaZTjzIoZOWygqkNXNTs6lEghH6rPahgpNJ72WOOZh4K-lsu3KhW0CN2P9ywjLUffhR02MFShOVnbEptQ02ykSUi_aNuFQzhpN-SqgLrHxR_OyfvT4yZ5idbp8yp5WEctt3KINKLLwWjQaGxhrPFGoQDOHeaaMWOn9-PMOrAekDGwTsksyz1o7vMsdnJO7n7vTskfR-yH7T4cu2aK3AqttGFTXUx-AwAvXD8</recordid><startdate>20220404</startdate><enddate>20220404</enddate><creator>Zhang, Fei</creator><creator>Wu, Chunzheng</creator><creator>Wang, Shuibo</creator><creator>Wang, Shiwei</creator><creator>Li, Tong</creator><creator>Zou, Laixi</creator><creator>Yu, Hongbo</creator><creator>Yin, Hongfeng</creator><general>Royal Society of Chemistry</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20220404</creationdate><title>Tailoring the activity and selectivity of Rh/SiO2 for the selective hydrogenation of phenol by CoOx promotion</title><author>Zhang, Fei ; Wu, Chunzheng ; Wang, Shuibo ; Wang, Shiwei ; Li, Tong ; Zou, Laixi ; Yu, Hongbo ; Yin, Hongfeng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p183t-6ee9ca76a6e78f787d74e2a119ec600780495b89a8dae00a8943bbcda61dcb593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Bimetals</topic><topic>Catalysts</topic><topic>Cobalt oxides</topic><topic>Electron states</topic><topic>Hydrogenation</topic><topic>Nanoparticles</topic><topic>Phenols</topic><topic>Rhodium</topic><topic>Selectivity</topic><topic>Silicon dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Fei</creatorcontrib><creatorcontrib>Wu, Chunzheng</creatorcontrib><creatorcontrib>Wang, Shuibo</creatorcontrib><creatorcontrib>Wang, Shiwei</creatorcontrib><creatorcontrib>Li, Tong</creatorcontrib><creatorcontrib>Zou, Laixi</creatorcontrib><creatorcontrib>Yu, Hongbo</creatorcontrib><creatorcontrib>Yin, Hongfeng</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Catalysis science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Fei</au><au>Wu, Chunzheng</au><au>Wang, Shuibo</au><au>Wang, Shiwei</au><au>Li, Tong</au><au>Zou, Laixi</au><au>Yu, Hongbo</au><au>Yin, Hongfeng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tailoring the activity and selectivity of Rh/SiO2 for the selective hydrogenation of phenol by CoOx promotion</atitle><jtitle>Catalysis science & technology</jtitle><date>2022-04-04</date><risdate>2022</risdate><volume>12</volume><issue>7</issue><spage>2257</spage><epage>2264</epage><pages>2257-2264</pages><issn>2044-4753</issn><eissn>2044-4761</eissn><abstract>Although supported Rh nanoparticles (NPs) are one of the best catalysts for the selective hydrogenation of phenol to cyclohexanol, they still suffer from poor selectivity problems. In this study, we promoted the selectivity of Rh NPs with CoOx through an in situ transformation of the bimetallic RhCo NPs on SiO2. Among the obtained Rh–CoOx/SiO2 catalysts, the one with a Co/Rh molar ratio of 1/3 exhibited the highest phenol conversion (i.e., 98.1%) and the highest selectivity to cyclohexanol (i.e., 99.4%). Our study showed that CoOx promoters modified the electronic states of Rh and created new active sites at their interface, which are beneficial to the activation of phenol and the desorption of cyclohexanol. Excessive coverage of Rh by CoOx, however, would cause deactivation due to the less exposure of the Rh–CoOx interface.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d1cy02324a</doi><tpages>8</tpages></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Bimetals Catalysts Cobalt oxides Electron states Hydrogenation Nanoparticles Phenols Rhodium Selectivity Silicon dioxide |
| title | Tailoring the activity and selectivity of Rh/SiO2 for the selective hydrogenation of phenol by CoOx promotion |
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