SELECTIVE SURFACE DEALUMINATION OF ZEOLITES AND USE OF THE SURFACE-DEALUMINATED ZEOLITES

A process for the selective surface dealumination of a zeolite having a Constraint Index greater than 1 comprising contacting the zeolite with dicarboxylic acid, such as oxalic acid. The resultant surface-dealuminated zeolite exhibits improved selectivity for the conversion of cyclohexanone oxime to...

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Main Authors APELIAN, MINAS R, BELL, WELDON K, VENKAT, CHAYA R, HAAG, WERNER O, FUNG, SHIU L.A
Format Patent
LanguageEnglish
French
Published 12.11.1993
Edition5
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Summary:A process for the selective surface dealumination of a zeolite having a Constraint Index greater than 1 comprising contacting the zeolite with dicarboxylic acid, such as oxalic acid. The resultant surface-dealuminated zeolite exhibits improved selectivity for the conversion of cyclohexanone oxime to epsilon caprolactam. F-6615(6976) SELECTIVE SURFACE DEALUMINATION OF ZEOLITES AND USE OF THE SURFACE-DEALUMINATED ZEOLITES A process for the selective surface dealumination of a zeolite having a Constraint Index greater than 1 comprising contacting the zeolite with dicarboxylic acid, such as oxalic acid. The resultant surface-dealuminated zeolite exhibits improved selectivity for the conversion of cyclohexanone oxime to epsilon caprolactam.
Bibliography:Application Number: CA19932094947