The composite solid oxide super acid Pt-SO_4 ~ ( 2 - ) / ZrO_2-Al_2O_3 catalyst was prepared and its structure surface properties and catalytic activities for n-butane isomerization reaction were investiga - ted by XRD XPS SEM FT-IR .
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Surface acidity and catalytic activity of the catalysts for xylene isomerization
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The m-diethylbenzene is produced mainly on the internal surface acid site but not by isomerization of p-diethylbenzene on the external surface . Phosphorus mainly modified surface acid site of zeolites .
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The results indicate that Cs is located at the area between Ag and u03b1 - Al2O3 . Cs can improve the selectivity through adjusting the electronic properties on the surface of catalysts inhibiting the absorbing of ethylene oxide combustion and isomerization .
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（催化剂的）表面异构