Effect of A-site substitution on the simultaneous catalytic removal of NOx and soot by LaMnO3 perovskites
The simultaneous catalytic removal of NOx and soot by La1−xMxMnO3 (M = K, Sr, Pr; x = 0, 0.1, 0.2, 0.3) perovskites was investigated. The properties of the catalysts were characterized by XRD, FT-IR, BET, SEM, XPS, H2-TPR and soot-TPR. The results showed that K+, Sr2+ and Pr3+ successfully entered t...
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| Veröffentlicht in: | New journal of chemistry 2019, Vol.43 (29), p.11684-11691 |
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| container_issue | 29 |
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| container_title | New journal of chemistry |
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| creator | Zhao, Hairui Sun, Lvesheng Fu, Maochen Mao, Lei Zhao, Xuteng Zhang, Xin Xiao, Youhong Dong, Guojun |
| description | The simultaneous catalytic removal of NOx and soot by La1−xMxMnO3 (M = K, Sr, Pr; x = 0, 0.1, 0.2, 0.3) perovskites was investigated. The properties of the catalysts were characterized by XRD, FT-IR, BET, SEM, XPS, H2-TPR and soot-TPR. The results showed that K+, Sr2+ and Pr3+ successfully entered the lattice and formed a perovskite structure. The catalyst doped with K+ exhibited the most outstanding performance. The La0.8K0.2MnO3 catalyst showed the best catalytic activity with 39.07% NO conversion and 92.41% N2 selectivity; the soot burning rates reached 10% (Ti) and 50% (Tm) at 365 °C and 420 °C, respectively. More oxygen vacancies and Mn4+ ions appeared in the catalyst with the increase in K+, due to which the ratio of Oads/Olat and Mn4+/Mn3+ changed regularly; this increased the ability of removing NOx and diesel soot particles. |
| doi_str_mv | 10.1039/c9nj01444f |
| format | Article |
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The properties of the catalysts were characterized by XRD, FT-IR, BET, SEM, XPS, H2-TPR and soot-TPR. The results showed that K+, Sr2+ and Pr3+ successfully entered the lattice and formed a perovskite structure. The catalyst doped with K+ exhibited the most outstanding performance. The La0.8K0.2MnO3 catalyst showed the best catalytic activity with 39.07% NO conversion and 92.41% N2 selectivity; the soot burning rates reached 10% (Ti) and 50% (Tm) at 365 °C and 420 °C, respectively. More oxygen vacancies and Mn4+ ions appeared in the catalyst with the increase in K+, due to which the ratio of Oads/Olat and Mn4+/Mn3+ changed regularly; this increased the ability of removing NOx and diesel soot particles.</description><identifier>ISSN: 1144-0546</identifier><identifier>EISSN: 1369-9261</identifier><identifier>DOI: 10.1039/c9nj01444f</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Burning rate ; Catalysts ; Catalytic activity ; Catalytic converters ; Lanthanum compounds ; Lattice vacancies ; Manganese ions ; Nitrogen oxides ; Perovskite structure ; Perovskites ; Selectivity ; Soot ; X ray photoelectron spectroscopy</subject><ispartof>New journal of chemistry, 2019, Vol.43 (29), p.11684-11691</ispartof><rights>Copyright Royal Society of Chemistry 2019</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>314,780,784,4022,27922,27923,27924</link.rule.ids></links><search><creatorcontrib>Zhao, Hairui</creatorcontrib><creatorcontrib>Sun, Lvesheng</creatorcontrib><creatorcontrib>Fu, Maochen</creatorcontrib><creatorcontrib>Mao, Lei</creatorcontrib><creatorcontrib>Zhao, Xuteng</creatorcontrib><creatorcontrib>Zhang, Xin</creatorcontrib><creatorcontrib>Xiao, Youhong</creatorcontrib><creatorcontrib>Dong, Guojun</creatorcontrib><title>Effect of A-site substitution on the simultaneous catalytic removal of NOx and soot by LaMnO3 perovskites</title><title>New journal of chemistry</title><description>The simultaneous catalytic removal of NOx and soot by La1−xMxMnO3 (M = K, Sr, Pr; x = 0, 0.1, 0.2, 0.3) perovskites was investigated. The properties of the catalysts were characterized by XRD, FT-IR, BET, SEM, XPS, H2-TPR and soot-TPR. The results showed that K+, Sr2+ and Pr3+ successfully entered the lattice and formed a perovskite structure. The catalyst doped with K+ exhibited the most outstanding performance. The La0.8K0.2MnO3 catalyst showed the best catalytic activity with 39.07% NO conversion and 92.41% N2 selectivity; the soot burning rates reached 10% (Ti) and 50% (Tm) at 365 °C and 420 °C, respectively. More oxygen vacancies and Mn4+ ions appeared in the catalyst with the increase in K+, due to which the ratio of Oads/Olat and Mn4+/Mn3+ changed regularly; this increased the ability of removing NOx and diesel soot particles.</description><subject>Burning rate</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Catalytic converters</subject><subject>Lanthanum compounds</subject><subject>Lattice vacancies</subject><subject>Manganese ions</subject><subject>Nitrogen oxides</subject><subject>Perovskite structure</subject><subject>Perovskites</subject><subject>Selectivity</subject><subject>Soot</subject><subject>X ray photoelectron spectroscopy</subject><issn>1144-0546</issn><issn>1369-9261</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNotTstKAzEUDaJgrW78goDr0XvzmmZZSn1AtRtdlztpglOnkzrJFP17IwoHzuHAeTB2jXCLIO2ds_0OUCkVTtgEpbGVFQZPiy5mBVqZc3aR0g4AsTY4Ye0yBO8yj4HPq9Rmz9PYpNzmMbex5wX5vXjtfuwy9T6OiTvK1H3n1vHB7-ORut_wy_qLU7_lKcbMm2--oud-LfnBD_GYPkpvumRngbrkr_55yt7ul6-Lx2q1fnhazFfVAWcyVzVpt9VgkGrpaqGlJNLbBsAoBd4LW54HN6s9AoLXpCg02ioBEuvGCSOn7Oav9zDEz9GnvNnFcejL5EYII1AKbY38AUAXWMg</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>Zhao, Hairui</creator><creator>Sun, Lvesheng</creator><creator>Fu, Maochen</creator><creator>Mao, Lei</creator><creator>Zhao, Xuteng</creator><creator>Zhang, Xin</creator><creator>Xiao, Youhong</creator><creator>Dong, Guojun</creator><general>Royal Society of Chemistry</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>H9R</scope><scope>JG9</scope><scope>KA0</scope></search><sort><creationdate>2019</creationdate><title>Effect of A-site substitution on the simultaneous catalytic removal of NOx and soot by LaMnO3 perovskites</title><author>Zhao, Hairui ; Sun, Lvesheng ; Fu, Maochen ; Mao, Lei ; Zhao, Xuteng ; Zhang, Xin ; Xiao, Youhong ; Dong, Guojun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p183t-7a5cd5061a73c72533aa5db006440ee29011fc87e1010e5a4afb59420317bc263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Burning rate</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Catalytic converters</topic><topic>Lanthanum compounds</topic><topic>Lattice vacancies</topic><topic>Manganese ions</topic><topic>Nitrogen oxides</topic><topic>Perovskite structure</topic><topic>Perovskites</topic><topic>Selectivity</topic><topic>Soot</topic><topic>X ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhao, Hairui</creatorcontrib><creatorcontrib>Sun, Lvesheng</creatorcontrib><creatorcontrib>Fu, Maochen</creatorcontrib><creatorcontrib>Mao, Lei</creatorcontrib><creatorcontrib>Zhao, Xuteng</creatorcontrib><creatorcontrib>Zhang, Xin</creatorcontrib><creatorcontrib>Xiao, Youhong</creatorcontrib><creatorcontrib>Dong, Guojun</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Illustrata: Natural Sciences</collection><collection>Materials Research Database</collection><collection>ProQuest Illustrata: Technology Collection</collection><jtitle>New journal of chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhao, Hairui</au><au>Sun, Lvesheng</au><au>Fu, Maochen</au><au>Mao, Lei</au><au>Zhao, Xuteng</au><au>Zhang, Xin</au><au>Xiao, Youhong</au><au>Dong, Guojun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of A-site substitution on the simultaneous catalytic removal of NOx and soot by LaMnO3 perovskites</atitle><jtitle>New journal of chemistry</jtitle><date>2019</date><risdate>2019</risdate><volume>43</volume><issue>29</issue><spage>11684</spage><epage>11691</epage><pages>11684-11691</pages><issn>1144-0546</issn><eissn>1369-9261</eissn><abstract>The simultaneous catalytic removal of NOx and soot by La1−xMxMnO3 (M = K, Sr, Pr; x = 0, 0.1, 0.2, 0.3) perovskites was investigated. The properties of the catalysts were characterized by XRD, FT-IR, BET, SEM, XPS, H2-TPR and soot-TPR. The results showed that K+, Sr2+ and Pr3+ successfully entered the lattice and formed a perovskite structure. The catalyst doped with K+ exhibited the most outstanding performance. The La0.8K0.2MnO3 catalyst showed the best catalytic activity with 39.07% NO conversion and 92.41% N2 selectivity; the soot burning rates reached 10% (Ti) and 50% (Tm) at 365 °C and 420 °C, respectively. More oxygen vacancies and Mn4+ ions appeared in the catalyst with the increase in K+, due to which the ratio of Oads/Olat and Mn4+/Mn3+ changed regularly; this increased the ability of removing NOx and diesel soot particles.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/c9nj01444f</doi><tpages>8</tpages></addata></record> |
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| ispartof | New journal of chemistry, 2019, Vol.43 (29), p.11684-11691 |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Burning rate Catalysts Catalytic activity Catalytic converters Lanthanum compounds Lattice vacancies Manganese ions Nitrogen oxides Perovskite structure Perovskites Selectivity Soot X ray photoelectron spectroscopy |
| title | Effect of A-site substitution on the simultaneous catalytic removal of NOx and soot by LaMnO3 perovskites |
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