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High Selective Skeletal Isomerization of 1-Butene over Phosphorus-Modified Silica-Alumina
Dept. of Chem. Tech. & The Research Institute for Catalysis, Chonnam National University, Kwangju 500-757, Korea 1Dept. of Petro. Industry, Kwangyang College, Kwangyang, Chonnam 545-800, Korea
gseo@chonnam.chonnam.ac.kr
Korean Journal of Chemical Engineering, May 1999, 16(3), 392-395(4), 10.1007/BF02707131
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Abstract
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.
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References
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Seo G, Kim NH, Lee YH, Kim JH, Catal. Lett., 57(4), 209 (1999)
