Print: | ISSN 0256-1115 |
Online: | ISSN 1975-7220 |
Korean Journal of Chemical Engineering,
Vol.16, No.3, 392-395, 1999 High Selective Skeletal Isomerization of 1-Butene over Phosphorus-Modified Silica-Alumina
Silica-alumina catalysts modified with different loadings of phosphorus have been used for the skeletal isomerization of 1-butene to investigate the effects of the phosphorus modification on the conversion of 1-butane and the selectivity for iso-butene. Increasing the Phosphorus loading led to a decrease in conversion of 1-butene over phosphorus-modified silica-alumina catalysts, while the selectivity far iso-butene increased. Silica-alumina catalyst with phosphorus of 9.8 wt% showed an extremely high selectivity for iso-butene. The results of NH3-TPD, adsorption-desorption behavior of 1-butane and TG analysis of used catalysts indicate that the considerable decrease of strong acid sites by phosphorus modification causes the high selectivity for skeletal isomerization of 1-butene.
Keywords:
1-Butane; Skeletal Isomerization; Silica-Alumina; Phosphorus Modification; Monomolecular Reaction
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