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8387506 
Journal Article 
Effects of Bridge Structure on Stability and Catalytic Oxidation Performance of Polystyrene Microsphere Supported TEMPO 
Chen, L; Tang, J; Li, DJ; Shen, XB; Zhang, Q; Wang, JL 
2017 
Zhejiang University 
31 
4 
877-883 
Chinese 
Four catalysts (PS-O-TEMPO, PS-im-C4-TEMPO, PS-im-C6-TEMPO and PS-im-C10-TEMPO) were prepared by immobilization of 2,2,6,6-tetramethylpiperidinooxy (TEMPO) on cross-linked polystyrene microspheres via -O- and -(CH2)n-im- bonds. Chemical structures of the resultant catalysts were confirmed by flourier transform infrared spectroscopy. TEMPO loadings were calculated from element analysis results, and thermal stabilities were measured with thermal gravimetric analyzer. The swelling capacities of the microspheres were characterized with particle size analyzer. The results show that ionic liquid bridging results in higher TEMPO loading comparing to ether bonds. Moreover, PS-im-C6-TEMPO has better thermal stability and wettability, which exhibits good catalytic activity and stability when it is used in batch and fixed bed reactors for benzyl alcohol oxidation. © 2017, Editorial Board of “Journal of Chemical Engineering of Chinese Universities”. All right reserved. 
Alcohol oxidation; Batch reactor; Fixed bed reactor; Polystyrene microsphere; Supported TEMPO