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Regeneration of amorphous NiB/SiO 2 catalysts deactivated in cyclopentadiene hydrogenation
Author(s) -
Wang WeiJiang,
Li HeXing,
Deng JingFa
Publication year - 2000
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(200002)75:2<147::aid-jctb186>3.0.co;2-t
Subject(s) - selectivity , cyclopentadiene , catalysis , amorphous solid , cyclopentene , crystallization , chemistry , x ray photoelectron spectroscopy , regeneration (biology) , chemical engineering , organic chemistry , materials science , engineering , biology , microbiology and biotechnology
An amorphous NiB/SiO 2 catalyst, deactivated in the partial hydrogenation of cyclopentadiene to cyclopentene, was regenerated by an oxidation–reduction 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 first operation. © 2000 Society of Chemical Industry