Enhancement of NO-elimination activity of Co-silicate catalyst by high-temperature calcination in steam-containing air
H–Co-silicate having an MFI structure (CoMFI), calcined in steam-containing air at 800°C (CoMFI-800S), was characterized by XRD and diffuse reflectance electron absorption (EA). The calcination educed some of the Co ions from the CoMFI framework to make small clusters nearby. The CoMFI-800S performa...
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| Veröffentlicht in: | Catalysis letters 1998-01, Vol.52 (3-4), p.139-144 |
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| creator | KAGAWA, K KON, S IWAMOTO, S INUI, T |
| description | H–Co-silicate having an MFI structure (CoMFI), calcined in steam-containing air at 800°C (CoMFI-800S), was characterized by XRD and diffuse reflectance electron absorption (EA). The calcination educed some of the Co ions from the CoMFI framework to make small clusters nearby. The CoMFI-800S performance in NO elimination in the presence of excess O2 was compared with that of Co supported on siliceous MFI zeolite ([Co]SiMFI), Co supported on H–Co-silicate ([Co]CoMFI), and a physical mixture of CoMFI and [Co]SiMFI (Co+[Co]). The educed Co ions enhanced NO elimination due to the uniform and isolated dispersion of oxidized Co clusters. |
| doi_str_mv | 10.1023/A:1019096125665 |
| format | Article |
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The calcination educed some of the Co ions from the CoMFI framework to make small clusters nearby. The CoMFI-800S performance in NO elimination in the presence of excess O2 was compared with that of Co supported on siliceous MFI zeolite ([Co]SiMFI), Co supported on H–Co-silicate ([Co]CoMFI), and a physical mixture of CoMFI and [Co]SiMFI (Co+[Co]). The educed Co ions enhanced NO elimination due to the uniform and isolated dispersion of oxidized Co clusters.</description><identifier>ISSN: 1011-372X</identifier><identifier>EISSN: 1572-879X</identifier><identifier>DOI: 10.1023/A:1019096125665</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Catalysis ; Catalysts: preparations and properties ; Chemistry ; Clusters ; Exact sciences and technology ; General and physical chemistry ; High temperature ; Reflectance ; Roasting ; Theory of reactions, general kinetics. Catalysis. 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The calcination educed some of the Co ions from the CoMFI framework to make small clusters nearby. The CoMFI-800S performance in NO elimination in the presence of excess O2 was compared with that of Co supported on siliceous MFI zeolite ([Co]SiMFI), Co supported on H–Co-silicate ([Co]CoMFI), and a physical mixture of CoMFI and [Co]SiMFI (Co+[Co]). The educed Co ions enhanced NO elimination due to the uniform and isolated dispersion of oxidized Co clusters.</description><subject>Catalysis</subject><subject>Catalysts: preparations and properties</subject><subject>Chemistry</subject><subject>Clusters</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>High temperature</subject><subject>Reflectance</subject><subject>Roasting</subject><subject>Theory of reactions, general kinetics. Catalysis. 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Nomenclature, chemical documentation, computer chemistry</topic><topic>Zeolites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>KAGAWA, K</creatorcontrib><creatorcontrib>KON, S</creatorcontrib><creatorcontrib>IWAMOTO, S</creatorcontrib><creatorcontrib>INUI, T</creatorcontrib><collection>Pascal-Francis</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Catalysis letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KAGAWA, K</au><au>KON, S</au><au>IWAMOTO, S</au><au>INUI, T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhancement of NO-elimination activity of Co-silicate catalyst by high-temperature calcination in steam-containing air</atitle><jtitle>Catalysis letters</jtitle><date>1998-01-01</date><risdate>1998</risdate><volume>52</volume><issue>3-4</issue><spage>139</spage><epage>144</epage><pages>139-144</pages><issn>1011-372X</issn><eissn>1572-879X</eissn><abstract>H–Co-silicate having an MFI structure (CoMFI), calcined in steam-containing air at 800°C (CoMFI-800S), was characterized by XRD and diffuse reflectance electron absorption (EA). The calcination educed some of the Co ions from the CoMFI framework to make small clusters nearby. The CoMFI-800S performance in NO elimination in the presence of excess O2 was compared with that of Co supported on siliceous MFI zeolite ([Co]SiMFI), Co supported on H–Co-silicate ([Co]CoMFI), and a physical mixture of CoMFI and [Co]SiMFI (Co+[Co]). The educed Co ions enhanced NO elimination due to the uniform and isolated dispersion of oxidized Co clusters.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1023/A:1019096125665</doi><tpages>6</tpages></addata></record> |
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| ispartof | Catalysis letters, 1998-01, Vol.52 (3-4), p.139-144 |
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| subjects | Catalysis Catalysts: preparations and properties Chemistry Clusters Exact sciences and technology General and physical chemistry High temperature Reflectance Roasting Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Zeolites |
| title | Enhancement of NO-elimination activity of Co-silicate catalyst by high-temperature calcination in steam-containing air |
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