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dc.contributor.author
Volpe, María Alicia  
dc.contributor.author
García, Elba Ana  
dc.date.available
2018-08-16T19:32:48Z  
dc.date.issued
2012-06  
dc.identifier.citation
Volpe, María Alicia; García, Elba Ana; The Influence of the amount and impregnation sequence of potassium on the catalytic performance of Vox/Al2O3 for the non-oxidative dehydrogenation of n-butane; Sociedade Brasileira de Química; Journal of the Brazilian Chemical Society; 23; 6; 6-2012; 1024-1032  
dc.identifier.issn
0103-5053  
dc.identifier.uri
http://hdl.handle.net/11336/55998  
dc.description.abstract
The non-oxidative dehydrogenation of n-butane was studied over potassium-promoted supported vanadium alumina catalysts (at 823 K under atmosphere pressure) to explore the Influence of the amount and the order of potassium aggregation on the catalytic activity and selectivity towards olefins. The non-oxidative dehydrogenation activity and selectivity decreased with increasing K/V molar ratio. The best catalytic performance was obtained with 1 wt.% of potassium loading and when the promoter was first aggregated in the supported vanadium alumina catalysts. The order of promoter aggregation has effects in the catalytic activity. TPR (temperature programmed reduction) data indicate that less vanadium species are accessible to the reduction when low amount (1 wt.%) of alkali metal promoter was first introduced in these samples. After regeneration treatment, these promoted catalysts did not recover the full activity. Taking in account TPR results, this catalyst deactivation may be related to the irreversible structural transformation of surface vanadium oxide species by potassium.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Sociedade Brasileira de Química  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
K Promoter  
dc.subject
Non-Oxidative Dehydrogenation of N-Butane  
dc.subject
Tpr  
dc.subject
Vanadium Oxide  
dc.subject.classification
Otras Ingeniería Química  
dc.subject.classification
Ingeniería Química  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
The Influence of the amount and impregnation sequence of potassium on the catalytic performance of Vox/Al2O3 for the non-oxidative dehydrogenation of n-butane  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-07-11T13:47:11Z  
dc.identifier.eissn
1678-4790  
dc.journal.volume
23  
dc.journal.number
6  
dc.journal.pagination
1024-1032  
dc.journal.pais
Brasil  
dc.journal.ciudad
San Pablo  
dc.description.fil
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.description.fil
Fil: García, Elba Ana. Universidad Nacional del Sur; Argentina  
dc.journal.title
Journal of the Brazilian Chemical Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1590/S0103-50532012000600005  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/rtjzxf