SciELO - Scientific Electronic Library Online

 
vol.44 número3ESTRUCTURA DEL BROMOHIDRATO DE 2,4-DIAMINO-5- FENILTIAZOL (AMIFENAZOL) EN DISOLUCION Y EN ESTADO SOLIDOUN NUEVO METODO DE OBTENCION DE DATOS CINETICOS PARA CRISTALIZACIÓN BATCH DESDE SOLUCIONES ACUOSAS índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Boletín de la Sociedad Chilena de Química

versión impresa ISSN 0366-1644

Resumen

PONZI, ESTHER et al. ISOMERIZACION DE a-PINENO. INFLUENCIA DE LA CONCENTRACION DE HIERRO EN OXIDO DE CIRCONIO SULFATADO. Bol. Soc. Chil. Quím. [online]. 1999, vol.44, n.3, pp. 271-277. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16441999000300004.

Sulfated catalysts of zirconium oxide (SZ) - which contained a constantmanganese amount - were promoted with iron (SFMZ) and test during the laboratory production of camphene from a-pinene. These materials were characterized by X-Ray Diffraction (XRD), surface area measurements by BET method, infrarredspectroscopy with adsorbed ammonia (FTIR), and by the 2-propanol transformation reaction, used to characterize acidic sites. At low iron concentration,the addition of Fe during catalyst preparation increases the activity of a-pinene transformation. Results from the 2-propanol dehydration reaction reveal a decrease of acidity for increasing iron concentrations. These results would indicate that the activity change is related to catalystsacididy

Palabras llave : a-pinene isomerization; sulfated zirconia; superacid.

        · resumen en Español     · texto en Español