| Attributes | Values |
|---|
| rdf:type
| |
| Description
| - The cracking of 2-methyl-2-butene was canied out as a model reaction Of C-4(+) olefins cracking by using of various zeolite and zeotype catalysts to obtain light olefins, such as ethylene and propylene. Only ZSM-5 and ZSM-11 zeolites with 10-MRP with intersecting channels and acid sites concentration ranging between 0.03 and 0.1 mmol/g exhibit high and stable selectivity to C-2-C-4 olefins at high conversion level. Active and selective catalysts were prepared by three different methods: direct synthesis of H-ZSM-5 with high Si/Al ratio, steaming of HZSM-5 and %22partial%22 ammonium ion exchange of Na-ZSM-5. Neither H-(AI)ZSM-5 with high concentration of acid sites nor H-(Fe)ZSM-5 are suitable catalysts as they catalyze hydrogen-transfer reactions yielding paraffins and aromatics, showing the importance of low concentration and high strength of acid sites for cracking activity-selectivity.
- The cracking of 2-methyl-2-butene was canied out as a model reaction Of C-4(+) olefins cracking by using of various zeolite and zeotype catalysts to obtain light olefins, such as ethylene and propylene. Only ZSM-5 and ZSM-11 zeolites with 10-MRP with intersecting channels and acid sites concentration ranging between 0.03 and 0.1 mmol/g exhibit high and stable selectivity to C-2-C-4 olefins at high conversion level. Active and selective catalysts were prepared by three different methods: direct synthesis of H-ZSM-5 with high Si/Al ratio, steaming of HZSM-5 and %22partial%22 ammonium ion exchange of Na-ZSM-5. Neither H-(AI)ZSM-5 with high concentration of acid sites nor H-(Fe)ZSM-5 are suitable catalysts as they catalyze hydrogen-transfer reactions yielding paraffins and aromatics, showing the importance of low concentration and high strength of acid sites for cracking activity-selectivity. (en)
- Bylo studováno krakování 2-metyl-2-butenu jako modelová reakce krakování C4+ olefinů s použitím různých zeolitů a zetypů za účelem získat lehké olefiny zejména ethylen a propylen. Jen zeolity ZSM-5 a ZSM-11 s protínajícími se 10-MRP a koncentrací kyselých center v rozsahu 0,03 – 0,1 mmol.g-1 vykazují vysokou a stabilní selektivitu na C2-C4 olefiny a vysokou úroveň konverze. Aktivní a selektivní katalyzátor byl připraven pomocí tří metod: přímá syntéza H-ZSM-5 s vysokým poměrem Si/Al, opracováním H-ZSM-5 nebo částečnou iontovou výměnou Na-ZSM-5 NH4+ ionty. H-(Al)ZSM-5 s vysokou koncentrací kyselých center a H-(Fe)ZSM-5 katalyzují reakce s přenosem vodíku poskytující parafíny a aromáty a nejsou tak vhodnými katalyzátory. Toto ukazuje důležitost malé koncentrace a silné kyselosti aktivních center. Vysoký výtěžek butenů v produktech indikuje, že penteny jsou krakovány v 10-MRP za vzniku objemného intermediátu karbéniového iontu vyžadujícího dostatečný prostor v kanálu zeolitu. (cs)
|
| Title
| - Cracking of pentenes to C2-C4 light olefins over zeolites and zeotypes - Role of topology and acid site strength and concentration
- Krakování pentenů na C2-C4 lehké olefiny na zeolitech a zeotypech. Role topologie a síly kyselosti a koncentrace kyselých center (cs)
- Cracking of pentenes to C2-C4 light olefins over zeolites and zeotypes - Role of topology and acid site strength and concentration (en)
|
| skos:prefLabel
| - Cracking of pentenes to C2-C4 light olefins over zeolites and zeotypes - Role of topology and acid site strength and concentration
- Krakování pentenů na C2-C4 lehké olefiny na zeolitech a zeotypech. Role topologie a síly kyselosti a koncentrace kyselých center (cs)
- Cracking of pentenes to C2-C4 light olefins over zeolites and zeotypes - Role of topology and acid site strength and concentration (en)
|
| skos:notation
| - RIV/61388955:_____/05:00028541!RIV06-AV0-61388955
|
| http://linked.open.../vavai/riv/strany
| |
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(IBS4040015), Z(AV0Z40400503)
|
| http://linked.open...iv/cisloPeriodika
| |
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/05:00028541
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - pentene cracking; zeolite topology; acid site concentration; ZSM-5 (en)
|
| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| |
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| - Applied Catalysis A - General
|
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Bortnovsky, Oleg
- Sazama, Petr
- Wichterlová, Blanka
|
| http://linked.open...n/vavai/riv/zamer
| |
| issn
| |
| number of pages
| |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)