ZRO2 PROMOTED WITH SULFATE, IRON AND MANGANESE - A SOLID SUPERACID CATALYST CAPABLE OF LOW-TEMPERATURE N-BUTANE ISOMERIZATION

被引:122
作者
JATIA, A [1 ]
CHANG, C [1 ]
MACLEOD, JD [1 ]
OKUBO, T [1 ]
DAVIS, ME [1 ]
机构
[1] CALTECH,PASADENA,CA 91125
关键词
SOLID SUPERACIDS; ZIRCONIUM OXIDE; TEMPERATURE PROGRAMMED DESORPTION; SULFATED ZIRCONIA; BUTANE ISOMERIZATION;
D O I
10.1007/BF00815411
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A sulfated oxide of zirconium, iron and manganese is prepared and shown to isomerize n-butane to isobutane at 35-degrees-C with rates approximately 2-3 orders of magnitude greater than sulfated zirconia as claimed by workers at Sun Refining and Marketing Company. Temperature programmed desorption of benzene is used to investigate the acidity of this remarkable catalyst. Adsorbed benzene is oxidized to CO2 by the triply promoted oxide catalyst; CO2, SO2 and 02 are found to desorb at 525, 575 and 560-degrees-C, respectively. Sulfated zirconia does not adsorb benzene in a similar manner. The results from the temperature programmed desorption of benzene cannot be correlated with the n-butane isomerization activity.
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页码:21 / 28
页数:8
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