Modification of selectivity and carbon deposition during the initial stages of the n-butane dehydrogenation over mono and bimetallic catalysts
Document title: Modification of selectivity and carbon deposition during the initial stages of the n-butane dehydrogenation over mono and bimetallic catalysts
Journal: Latin American applied research
Database: PERIÓDICA
System number: 000372222
ISSN: 0327-0793
Authors: 1
1
1
Institutions: 1Universidad Nacional del Litoral, Facultad de Ingeniería Química, Santa Fe. Argentina
Year:
Volumen: 43
Number: 2
Pages: 131-136
Country: Argentina
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The initial carbon deposition and the generation of dehydrogenating selectivity during the initial steps of the reaction are investigated for Pt and PtSn catalysts supported on pure and Na-doped alumina by using a pulse technique (injection of n-butane pulses). Results demonstrate that Pt support-ed on pure alumina is not a proper dehydrogenation catalyst. It shows a high hydrogenolytic and cracking behavior and an important carbon formation that deactivates the catalyst. However the combined presence of tin and sodium inhibits not only the car-bon deposition reactions but also the C-C breaking reactions, increasing in an important way the dehy-drogenating selectivity to the different butenes to a value about 80%
Disciplines: Química
Keyword: Química orgánica,
Butano,
Deshidrogenación,
Catalizadores bimetálicos,
Depositación de carbono
Keyword: Chemistry,
Organic chemistry,
Butane,
Dehydrogenation,
Bimetallic catalysts,
Carbon deposition
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