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Regeneration of amorphous NiB/SiO2 catalysts deactivated in cyclopentadiene hydrogenation

โœ Scribed by Wei-Jiang Wang; He-Xing Li; Jing-Fa Deng

Publisher
Wiley (John Wiley & Sons)
Year
2000
Tongue
English
Weight
90 KB
Volume
75
Category
Article
ISSN
0268-2575

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โœฆ Synopsis

An amorphous NiB/SiO 2 catalyst, deactivated in the partial hydrogenation of cyclopentadiene to cyclopentene, was regenerated by an oxidationยฑreduction method. After regeneration, the activity was recovered and the selectivity almost recovered. The data of BET, H 2 uptake and XPS measurements on the regenerated catalyst are almost the same as the original counterpart. XRD and DSC tests revealed that some crystallization had occurred over the regenerated catalyst, which led to the selectivity decreasing slightly. This regeneration was repeated several times, but the structural and chemical properties were nearly the same as after the ยฎrst operation.

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