Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.molcata.2012.07.003
Title: Enhanced catalytic performance of CeO 2 confined inside carbon nanotubes for dehydrogenation of ethylbenzene in the presence of CO 2
Authors: Rao, R.
Zhang, Q.
Liu, H.
Yang, H.
Ling, Q.
Yang, M.
Zhang, A.
Chen, W. 
Keywords: Carbon nanotubes
CeO 2
CO 2
Confinement
Dehydrogenation
Issue Date: Nov-2012
Citation: Rao, R., Zhang, Q., Liu, H., Yang, H., Ling, Q., Yang, M., Zhang, A., Chen, W. (2012-11). Enhanced catalytic performance of CeO 2 confined inside carbon nanotubes for dehydrogenation of ethylbenzene in the presence of CO 2. Journal of Molecular Catalysis A: Chemical 363-364 : 283-290. ScholarBank@NUS Repository. https://doi.org/10.1016/j.molcata.2012.07.003
Abstract: Carbon nanotubes (CNTs) filled with CeO 2 particles are prepared by wet impregnation assisted by capillary force. Compared to CeO 2 outside CNTs, these composites show superior catalytic performance of oxidative dehydrogenation (ODH) of ethylbenzene (EB) to styrene in the presence of CO 2. Transmission electron microscopy, temperature-programmed reduction, Raman and X-ray photoelectron spectroscopy are used to investigate the effect of CNT confinement on the catalytic performance of CeO 2 inside CNTs. The results indicate that CNT tubular structure results in strengthened interaction between CeO 2 and inner wall, which induces distortion and reducibility of CeO 2 lattices to promote the activation of surface lattice oxygen and the formation of oxygen vacancy. The activated surface oxygen and oxygen vacancy from CeO 2-CNT composites play an important role in two-step ODH reaction by promoting reverse water-gas shift reaction. In addition, CeO 2 filled into shorter CNTs exhibits higher catalytic activities due to decreasing the diffusion resistance of reactants and products in CNT channels. The fact that CeO 2-CNT composites exhibit excellent thermostability in the atmosphere of CO 2 provides a positive choice for enhancing catalytic efficiency at elevated temperature using CNTs as supports. © 2012 Elsevier B.V.
Source Title: Journal of Molecular Catalysis A: Chemical
URI: http://scholarbank.nus.edu.sg/handle/10635/93755
ISSN: 13811169
DOI: 10.1016/j.molcata.2012.07.003
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

24
checked on Sep 11, 2018

WEB OF SCIENCETM
Citations

21
checked on Sep 11, 2018

Page view(s)

31
checked on Mar 12, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.