Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles
Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of...
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| Veröffentlicht in: | Applied catalysis. B, Environmental Environmental, 2022-05, Vol.305, p.121038, Article 121038 |
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| creator | Lee, Jaeha Shin, Dongjae Lee, Eunwon Li, Chengbin Kim, Ji Man Han, Jeong Woo Kim, Do Heui |
| description | Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of Pt/CeO2 catalyst under the feed gas containing excess H2 (20 vol% of H2) was enhanced more than three times by forming CeO2 nano-patches on Pt nano-particles. Both in-situ diffuse reflectance infrared Fourier transform spectroscopy and density functional theory calculation results indicate that dissociated H2 on the Pt nano-particle inhibits the activity of the Pt/CeO2 catalysts by occupying the active sites (Pt nano-particle-CeO2 interface). On the other hand, thin CeO2 nano-patches on Pt nano-particle suppressed the H2 dissociation. As a result, the WGS reactivity of the active Pt nano-particle-CeO2 interface was less affected by H2, granting the catalysts the high activity under the practical reaction conditions.
[Display omitted]
•CO-FTIR band on Pt NP-CeO2 interface is assigned, which appears at ~2090 cm−1.•CeO2 nano-patches are formed on Pt NPs by controlled reductive treatment.•The LT-WGS activity of Pt NP/CeO2 is significantly inhibited by H2 in the feed.•CeO2 nano-patches inhibit the H2 activation on Pt NP as confirmed by CO-FTIR.•CeO2 nano-patches greatly enhance the LT-WGS activity under practical condition. |
| doi_str_mv | 10.1016/j.apcatb.2021.121038 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2638075552</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0926337321011632</els_id><sourcerecordid>2638075552</sourcerecordid><originalsourceid>FETCH-LOGICAL-c334t-4ebb40e1bfe21df0c5834e0759e3594410a86112cc66147334da350ac831c0f43</originalsourceid><addsrcrecordid>eNp9UUtrGzEQFqWFumn_QQ-CntfRa9fypRBMXhBIDslZaOVRLLNebaWxw_6Z_NZou8k1p4GZ7zEzHyG_OVtyxpvz_dIOzmK7FEzwJRecSf2FLLheyUpqLb-SBVuLppJyJb-THznvGWNCCr0grxddB6dgMfTPNPS70AaMaaTgPTik0dMbQWNPu_hSIRwGSBaPCeiLRUjVs80074JHmsA6DAU4lVPAcaI-4PkG7gUtu9luzEjbkfqYDpPX_0Fv-1gNFt0O8uTygB-thMF1kH-Sb952GX691zPydHX5uLmp7u6vbzcXd5WTUmGloG0VA956EHzrmau1VMBW9RpkvVaKM6sbzoVzTcPVqnC2VtbMOi25Y17JM_Jn1h1S_HeEjGYfj6kvlkY0UheluhYFpWaUSzHnBN4MKRxsGg1nZkrC7M2chJmSMHMShfZ3pkG54BQgmewC9A62IZUnm20Mnwu8Ad4ylGc</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2638075552</pqid></control><display><type>article</type><title>Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles</title><source>Elsevier ScienceDirect Journals</source><creator>Lee, Jaeha ; Shin, Dongjae ; Lee, Eunwon ; Li, Chengbin ; Kim, Ji Man ; Han, Jeong Woo ; Kim, Do Heui</creator><creatorcontrib>Lee, Jaeha ; Shin, Dongjae ; Lee, Eunwon ; Li, Chengbin ; Kim, Ji Man ; Han, Jeong Woo ; Kim, Do Heui</creatorcontrib><description>Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of Pt/CeO2 catalyst under the feed gas containing excess H2 (20 vol% of H2) was enhanced more than three times by forming CeO2 nano-patches on Pt nano-particles. Both in-situ diffuse reflectance infrared Fourier transform spectroscopy and density functional theory calculation results indicate that dissociated H2 on the Pt nano-particle inhibits the activity of the Pt/CeO2 catalysts by occupying the active sites (Pt nano-particle-CeO2 interface). On the other hand, thin CeO2 nano-patches on Pt nano-particle suppressed the H2 dissociation. As a result, the WGS reactivity of the active Pt nano-particle-CeO2 interface was less affected by H2, granting the catalysts the high activity under the practical reaction conditions.
[Display omitted]
•CO-FTIR band on Pt NP-CeO2 interface is assigned, which appears at ~2090 cm−1.•CeO2 nano-patches are formed on Pt NPs by controlled reductive treatment.•The LT-WGS activity of Pt NP/CeO2 is significantly inhibited by H2 in the feed.•CeO2 nano-patches inhibit the H2 activation on Pt NP as confirmed by CO-FTIR.•CeO2 nano-patches greatly enhance the LT-WGS activity under practical condition.</description><identifier>ISSN: 0926-3373</identifier><identifier>EISSN: 1873-3883</identifier><identifier>DOI: 10.1016/j.apcatb.2021.121038</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Catalysts ; CeO2 nano-patch ; Cerium oxides ; Density functional theory ; Excess H2 ; Fourier transforms ; In-situ diffuse reflectance infrared Fourier transform spectroscopy ; Low temperature ; Low temperature water-gas shift reaction ; Nanoparticles ; Patches (structures) ; Pt nano-particle ; Shift reaction</subject><ispartof>Applied catalysis. B, Environmental, 2022-05, Vol.305, p.121038, Article 121038</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright Elsevier BV May 15, 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c334t-4ebb40e1bfe21df0c5834e0759e3594410a86112cc66147334da350ac831c0f43</citedby><cites>FETCH-LOGICAL-c334t-4ebb40e1bfe21df0c5834e0759e3594410a86112cc66147334da350ac831c0f43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0926337321011632$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Lee, Jaeha</creatorcontrib><creatorcontrib>Shin, Dongjae</creatorcontrib><creatorcontrib>Lee, Eunwon</creatorcontrib><creatorcontrib>Li, Chengbin</creatorcontrib><creatorcontrib>Kim, Ji Man</creatorcontrib><creatorcontrib>Han, Jeong Woo</creatorcontrib><creatorcontrib>Kim, Do Heui</creatorcontrib><title>Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles</title><title>Applied catalysis. B, Environmental</title><description>Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of Pt/CeO2 catalyst under the feed gas containing excess H2 (20 vol% of H2) was enhanced more than three times by forming CeO2 nano-patches on Pt nano-particles. Both in-situ diffuse reflectance infrared Fourier transform spectroscopy and density functional theory calculation results indicate that dissociated H2 on the Pt nano-particle inhibits the activity of the Pt/CeO2 catalysts by occupying the active sites (Pt nano-particle-CeO2 interface). On the other hand, thin CeO2 nano-patches on Pt nano-particle suppressed the H2 dissociation. As a result, the WGS reactivity of the active Pt nano-particle-CeO2 interface was less affected by H2, granting the catalysts the high activity under the practical reaction conditions.
[Display omitted]
•CO-FTIR band on Pt NP-CeO2 interface is assigned, which appears at ~2090 cm−1.•CeO2 nano-patches are formed on Pt NPs by controlled reductive treatment.•The LT-WGS activity of Pt NP/CeO2 is significantly inhibited by H2 in the feed.•CeO2 nano-patches inhibit the H2 activation on Pt NP as confirmed by CO-FTIR.•CeO2 nano-patches greatly enhance the LT-WGS activity under practical condition.</description><subject>Catalysts</subject><subject>CeO2 nano-patch</subject><subject>Cerium oxides</subject><subject>Density functional theory</subject><subject>Excess H2</subject><subject>Fourier transforms</subject><subject>In-situ diffuse reflectance infrared Fourier transform spectroscopy</subject><subject>Low temperature</subject><subject>Low temperature water-gas shift reaction</subject><subject>Nanoparticles</subject><subject>Patches (structures)</subject><subject>Pt nano-particle</subject><subject>Shift reaction</subject><issn>0926-3373</issn><issn>1873-3883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9UUtrGzEQFqWFumn_QQ-CntfRa9fypRBMXhBIDslZaOVRLLNebaWxw_6Z_NZou8k1p4GZ7zEzHyG_OVtyxpvz_dIOzmK7FEzwJRecSf2FLLheyUpqLb-SBVuLppJyJb-THznvGWNCCr0grxddB6dgMfTPNPS70AaMaaTgPTik0dMbQWNPu_hSIRwGSBaPCeiLRUjVs80074JHmsA6DAU4lVPAcaI-4PkG7gUtu9luzEjbkfqYDpPX_0Fv-1gNFt0O8uTygB-thMF1kH-Sb952GX691zPydHX5uLmp7u6vbzcXd5WTUmGloG0VA956EHzrmau1VMBW9RpkvVaKM6sbzoVzTcPVqnC2VtbMOi25Y17JM_Jn1h1S_HeEjGYfj6kvlkY0UheluhYFpWaUSzHnBN4MKRxsGg1nZkrC7M2chJmSMHMShfZ3pkG54BQgmewC9A62IZUnm20Mnwu8Ad4ylGc</recordid><startdate>20220515</startdate><enddate>20220515</enddate><creator>Lee, Jaeha</creator><creator>Shin, Dongjae</creator><creator>Lee, Eunwon</creator><creator>Li, Chengbin</creator><creator>Kim, Ji Man</creator><creator>Han, Jeong Woo</creator><creator>Kim, Do Heui</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20220515</creationdate><title>Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles</title><author>Lee, Jaeha ; Shin, Dongjae ; Lee, Eunwon ; Li, Chengbin ; Kim, Ji Man ; Han, Jeong Woo ; Kim, Do Heui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-4ebb40e1bfe21df0c5834e0759e3594410a86112cc66147334da350ac831c0f43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Catalysts</topic><topic>CeO2 nano-patch</topic><topic>Cerium oxides</topic><topic>Density functional theory</topic><topic>Excess H2</topic><topic>Fourier transforms</topic><topic>In-situ diffuse reflectance infrared Fourier transform spectroscopy</topic><topic>Low temperature</topic><topic>Low temperature water-gas shift reaction</topic><topic>Nanoparticles</topic><topic>Patches (structures)</topic><topic>Pt nano-particle</topic><topic>Shift reaction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Jaeha</creatorcontrib><creatorcontrib>Shin, Dongjae</creatorcontrib><creatorcontrib>Lee, Eunwon</creatorcontrib><creatorcontrib>Li, Chengbin</creatorcontrib><creatorcontrib>Kim, Ji Man</creatorcontrib><creatorcontrib>Han, Jeong Woo</creatorcontrib><creatorcontrib>Kim, Do Heui</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Applied catalysis. B, Environmental</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Jaeha</au><au>Shin, Dongjae</au><au>Lee, Eunwon</au><au>Li, Chengbin</au><au>Kim, Ji Man</au><au>Han, Jeong Woo</au><au>Kim, Do Heui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles</atitle><jtitle>Applied catalysis. B, Environmental</jtitle><date>2022-05-15</date><risdate>2022</risdate><volume>305</volume><spage>121038</spage><pages>121038-</pages><artnum>121038</artnum><issn>0926-3373</issn><eissn>1873-3883</eissn><abstract>Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of Pt/CeO2 catalyst under the feed gas containing excess H2 (20 vol% of H2) was enhanced more than three times by forming CeO2 nano-patches on Pt nano-particles. Both in-situ diffuse reflectance infrared Fourier transform spectroscopy and density functional theory calculation results indicate that dissociated H2 on the Pt nano-particle inhibits the activity of the Pt/CeO2 catalysts by occupying the active sites (Pt nano-particle-CeO2 interface). On the other hand, thin CeO2 nano-patches on Pt nano-particle suppressed the H2 dissociation. As a result, the WGS reactivity of the active Pt nano-particle-CeO2 interface was less affected by H2, granting the catalysts the high activity under the practical reaction conditions.
[Display omitted]
•CO-FTIR band on Pt NP-CeO2 interface is assigned, which appears at ~2090 cm−1.•CeO2 nano-patches are formed on Pt NPs by controlled reductive treatment.•The LT-WGS activity of Pt NP/CeO2 is significantly inhibited by H2 in the feed.•CeO2 nano-patches inhibit the H2 activation on Pt NP as confirmed by CO-FTIR.•CeO2 nano-patches greatly enhance the LT-WGS activity under practical condition.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apcatb.2021.121038</doi></addata></record> |
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| subjects | Catalysts CeO2 nano-patch Cerium oxides Density functional theory Excess H2 Fourier transforms In-situ diffuse reflectance infrared Fourier transform spectroscopy Low temperature Low temperature water-gas shift reaction Nanoparticles Patches (structures) Pt nano-particle Shift reaction |
| title | Alleviating inhibitory effect of H2 on low-temperature water-gas shift reaction activity of Pt/CeO2 catalyst by forming CeO2 nano-patches on Pt nano-particles |
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