Artículo
Skeletal isomerization of linear butenes on boron promoted ferrierite: Effect of the catalyst preparation technique
Fecha de publicación:
05/2008
Editorial:
Springer
Revista:
Catalysis Letters
ISSN:
1011-372X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Potassium and acid ferrierites were impregnated with boron species by wet and incipient wetness techniques. All samples display a medium-intensity band at 3,450-3,470 cm-1 associated to Si-OH•••O groups corresponding to boron-containing units. The 1,398-1,404 cm-1 band assigned to the B-O stretching in BO3 units does not appear on boron-potassium-ferrierite prepared by wet impregnation. Catalytic performance during the linear butene skeletal isomerization was measured. At 300 °C, boron impregnated by incipient wetness technique on acid ferrierite reduces both linear butene conversion at a short time and isobutene yield in all time range. Boron-potassium-ferrierite prepared by wet impregnation has a suitable acidity to promote isobutene production. At 450 °C, this sample shows the best performance, being the isobutene yield 1.7 times higher than the acid-ferrierite one and reaching the highest isobutene selectivity (92%). This performance is maintained with time. Both isobutene yield and by-product distribution are strongly affected by temperature; dimer intermediates are formed. Finally, both kinds of hydroxyl groups corresponding to 3,466 and 3,635 cm-1 bands influence the isobutene production whereas BO3 sites are inactive for this reaction.
Palabras clave:
Boronferrierite
,
Isobutene
,
Skeletal Isomerization
,
Wet Impregnation
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Comelli, Raul Alberto; Skeletal isomerization of linear butenes on boron promoted ferrierite: Effect of the catalyst preparation technique; Springer; Catalysis Letters; 122; 3-4; 5-2008; 302-309
Compartir
Altmétricas