Isomerization of n-Heptane over Pd-Loaded Silico-Alumino-Phosphate Molecular Sieves
Isomerization of n-heptane was studied on a series of bifunctional SAPO-based catalysts with contents of 0.1 wt% Pd. From results on temperature programmed desorption of NH 3 it is deduced that the different molecular sieve structures contain nearly identical amounts of silicon substituting for phos...
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| Veröffentlicht in: | Journal of Catalysis 1995-08, Vol.155 (1), p.1-11 |
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| container_end_page | 11 |
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| container_issue | 1 |
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| container_title | Journal of Catalysis |
| container_volume | 155 |
| creator | Parlitz, B. Schreier, E. Zubowa, H.L. Eckelt, R. Lieske, E. Lischke, G. Fricke, R. |
| description | Isomerization of
n-heptane was studied on a series of bifunctional SAPO-based catalysts with contents of 0.1 wt% Pd. From results on temperature programmed desorption of NH
3 it is deduced that the different molecular sieve structures contain nearly identical amounts of silicon substituting for phosphorus in the framework (0.3 to 0.5 silicon atoms per unit cell). Best activities and selectivities for branched heptane isomers are achieved with SAPO-11 and SAPO-31. SAPO-17 and SAPO-5 show substantially lower activities. With SAPO-5, there is a high cracking selectivity which is assumed to be caused by the reduced accessibility of parts of the bridged hydroxyl groups within the molecular sieve framework. Different locations of these acid sites are evidenced by infrared OH vibration spectra recorded after adsorption of
n-heptane. |
| doi_str_mv | 10.1006/jcat.1995.1182 |
| format | Article |
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n-heptane was studied on a series of bifunctional SAPO-based catalysts with contents of 0.1 wt% Pd. From results on temperature programmed desorption of NH
3 it is deduced that the different molecular sieve structures contain nearly identical amounts of silicon substituting for phosphorus in the framework (0.3 to 0.5 silicon atoms per unit cell). Best activities and selectivities for branched heptane isomers are achieved with SAPO-11 and SAPO-31. SAPO-17 and SAPO-5 show substantially lower activities. With SAPO-5, there is a high cracking selectivity which is assumed to be caused by the reduced accessibility of parts of the bridged hydroxyl groups within the molecular sieve framework. Different locations of these acid sites are evidenced by infrared OH vibration spectra recorded after adsorption of
n-heptane.</description><identifier>ISSN: 0021-9517</identifier><identifier>EISSN: 1090-2694</identifier><identifier>DOI: 10.1006/jcat.1995.1182</identifier><identifier>CODEN: JCTLA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>02 PETROLEUM ; 40 CHEMISTRY ; ALUMINIUM OXIDES ; Catalysis ; Catalysts: preparations and properties ; CATALYTIC EFFECTS ; Chemistry ; CRACKING ; Exact sciences and technology ; General and physical chemistry ; HEPTANE ; ISOMERIZATION ; MOLECULAR SIEVES ; PALLADIUM ; PHOSPHATES ; SILICON OXIDES ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Journal of Catalysis, 1995-08, Vol.155 (1), p.1-11</ispartof><rights>1995 Academic Press</rights><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-733fbc254775ea734b34c1c0bc69ea918fbb97316b19d88c09e7acb78f907a963</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0021951785711827$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3600517$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/110995$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Parlitz, B.</creatorcontrib><creatorcontrib>Schreier, E.</creatorcontrib><creatorcontrib>Zubowa, H.L.</creatorcontrib><creatorcontrib>Eckelt, R.</creatorcontrib><creatorcontrib>Lieske, E.</creatorcontrib><creatorcontrib>Lischke, G.</creatorcontrib><creatorcontrib>Fricke, R.</creatorcontrib><title>Isomerization of n-Heptane over Pd-Loaded Silico-Alumino-Phosphate Molecular Sieves</title><title>Journal of Catalysis</title><description>Isomerization of
n-heptane was studied on a series of bifunctional SAPO-based catalysts with contents of 0.1 wt% Pd. From results on temperature programmed desorption of NH
3 it is deduced that the different molecular sieve structures contain nearly identical amounts of silicon substituting for phosphorus in the framework (0.3 to 0.5 silicon atoms per unit cell). Best activities and selectivities for branched heptane isomers are achieved with SAPO-11 and SAPO-31. SAPO-17 and SAPO-5 show substantially lower activities. With SAPO-5, there is a high cracking selectivity which is assumed to be caused by the reduced accessibility of parts of the bridged hydroxyl groups within the molecular sieve framework. Different locations of these acid sites are evidenced by infrared OH vibration spectra recorded after adsorption of
n-heptane.</description><subject>02 PETROLEUM</subject><subject>40 CHEMISTRY</subject><subject>ALUMINIUM OXIDES</subject><subject>Catalysis</subject><subject>Catalysts: preparations and properties</subject><subject>CATALYTIC EFFECTS</subject><subject>Chemistry</subject><subject>CRACKING</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>HEPTANE</subject><subject>ISOMERIZATION</subject><subject>MOLECULAR SIEVES</subject><subject>PALLADIUM</subject><subject>PHOSPHATES</subject><subject>SILICON OXIDES</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>0021-9517</issn><issn>1090-2694</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNp1kM9LwzAYhoMoOKdXzxW8pib9leY4hrrBxMH0HNKvX1lG15QkG-hfb0vFm6fv8rzfy_sQcs9ZzBkrng6gQ8ylzGPOy-SCzDiTjCaFzC7JjLGEU5lzcU1uvD8wxnmelzOyW3t7RGe-dTC2i2wTdXSFfdAdRvaMLtrWdGN1jXW0M60BSxft6Wg6S7d76_u9Dhi92Rbh1Go3IHhGf0uuGt16vPu9c_L58vyxXNHN--t6udhQyJgIVKRpU0GSZ0LkqEWaVWkGHFgFhUQtedlUlRQpLyou67IEJlFoqETZSCa0LNI5eZj-Wh-M8mACwh5s1yEExYf1Mh-YeGLAWe8dNqp35qjdl-JMjdrUqE2N2tSobQg8ToFee9Bt43QHxv-l0oKxweKAlROGw8CzQTf2YwdYGzfW19b81_ADqLiAmA</recordid><startdate>19950801</startdate><enddate>19950801</enddate><creator>Parlitz, B.</creator><creator>Schreier, E.</creator><creator>Zubowa, H.L.</creator><creator>Eckelt, R.</creator><creator>Lieske, E.</creator><creator>Lischke, G.</creator><creator>Fricke, R.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19950801</creationdate><title>Isomerization of n-Heptane over Pd-Loaded Silico-Alumino-Phosphate Molecular Sieves</title><author>Parlitz, B. ; Schreier, E. ; Zubowa, H.L. ; Eckelt, R. ; Lieske, E. ; Lischke, G. ; Fricke, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-733fbc254775ea734b34c1c0bc69ea918fbb97316b19d88c09e7acb78f907a963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>02 PETROLEUM</topic><topic>40 CHEMISTRY</topic><topic>ALUMINIUM OXIDES</topic><topic>Catalysis</topic><topic>Catalysts: preparations and properties</topic><topic>CATALYTIC EFFECTS</topic><topic>Chemistry</topic><topic>CRACKING</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>HEPTANE</topic><topic>ISOMERIZATION</topic><topic>MOLECULAR SIEVES</topic><topic>PALLADIUM</topic><topic>PHOSPHATES</topic><topic>SILICON OXIDES</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Parlitz, B.</creatorcontrib><creatorcontrib>Schreier, E.</creatorcontrib><creatorcontrib>Zubowa, H.L.</creatorcontrib><creatorcontrib>Eckelt, R.</creatorcontrib><creatorcontrib>Lieske, E.</creatorcontrib><creatorcontrib>Lischke, G.</creatorcontrib><creatorcontrib>Fricke, R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of Catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Parlitz, B.</au><au>Schreier, E.</au><au>Zubowa, H.L.</au><au>Eckelt, R.</au><au>Lieske, E.</au><au>Lischke, G.</au><au>Fricke, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Isomerization of n-Heptane over Pd-Loaded Silico-Alumino-Phosphate Molecular Sieves</atitle><jtitle>Journal of Catalysis</jtitle><date>1995-08-01</date><risdate>1995</risdate><volume>155</volume><issue>1</issue><spage>1</spage><epage>11</epage><pages>1-11</pages><issn>0021-9517</issn><eissn>1090-2694</eissn><coden>JCTLA5</coden><abstract>Isomerization of
n-heptane was studied on a series of bifunctional SAPO-based catalysts with contents of 0.1 wt% Pd. From results on temperature programmed desorption of NH
3 it is deduced that the different molecular sieve structures contain nearly identical amounts of silicon substituting for phosphorus in the framework (0.3 to 0.5 silicon atoms per unit cell). Best activities and selectivities for branched heptane isomers are achieved with SAPO-11 and SAPO-31. SAPO-17 and SAPO-5 show substantially lower activities. With SAPO-5, there is a high cracking selectivity which is assumed to be caused by the reduced accessibility of parts of the bridged hydroxyl groups within the molecular sieve framework. Different locations of these acid sites are evidenced by infrared OH vibration spectra recorded after adsorption of
n-heptane.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1006/jcat.1995.1182</doi><tpages>11</tpages></addata></record> |
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| ispartof | Journal of Catalysis, 1995-08, Vol.155 (1), p.1-11 |
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| language | eng |
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| subjects | 02 PETROLEUM 40 CHEMISTRY ALUMINIUM OXIDES Catalysis Catalysts: preparations and properties CATALYTIC EFFECTS Chemistry CRACKING Exact sciences and technology General and physical chemistry HEPTANE ISOMERIZATION MOLECULAR SIEVES PALLADIUM PHOSPHATES SILICON OXIDES Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Isomerization of n-Heptane over Pd-Loaded Silico-Alumino-Phosphate Molecular Sieves |
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