Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol

The effect of ceria promotion on Co/Al2O3 catalysts for ethanol dry reforming has been investigated at stoichiometric feed composition and 973 K under atmospheric pressure. Ce-promoted catalysts were synthesized using a wet co-impregnation method and evaluated in a quartz fixed-bed reactor. X-ray di...

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Main Authors:	Fayaz, Fahim, Danh, Huong T., Nguyen-Huy, Chinh, Vu, Khanh B., Bawadi, Abdullah, Vo, Dai-Viet N.
Format:	Article
Language:	English
Published:	Elsevier Ltd 2016
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/1/Fahim_Vo_Procedia%20Engineering.pdf

id	ump-13715
recordtype	eprints
spelling	ump-137152019-10-03T07:56:47Z http://umpir.ump.edu.my/id/eprint/13715/ Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol Fayaz, Fahim Danh, Huong T. Nguyen-Huy, Chinh Vu, Khanh B. Bawadi, Abdullah Vo, Dai-Viet N. TP Chemical technology The effect of ceria promotion on Co/Al2O3 catalysts for ethanol dry reforming has been investigated at stoichiometric feed composition and 973 K under atmospheric pressure. Ce-promoted catalysts were synthesized using a wet co-impregnation method and evaluated in a quartz fixed-bed reactor. X-ray diffraction measurements indicated the formation of CeO2, Co3O4 and CoAl2O4 phases on catalyst surface. Ce-addition eased the reduction process of Co3O4 to CoO phase which was subsequently reduced to metallic Co0 form. H2 and CO yields as well as ethanol conversion increased with growing Ce loading and approached the greatest value at 3wt.%Ce followed by a considerable drop beyond this optimal Ce content. Both promoted and unpromoted catalysts were stable with time-on-stream and the improvement of catalytic performance with Ce-addition was reasonably due to the high oxygen storage capacity of CeO2 promoter which oxidizing carbonaceous species. The heterogeneous nature of deposited carbons containing carbon nanofilament and graphite on spent catalyst surface was evident by scanning electron microscopy. However, the filamentous carbon appeared to be predominant on the surface of spent catalyst in comparison with undesirable graphite responsible for catalyst deterioration. Additionally, Ce-promoted catalysts were resistant to carbon deposition. Elsevier Ltd 2016 Article PeerReviewed application/pdf en cc_by_nc_nd http://umpir.ump.edu.my/id/eprint/13715/1/Fahim_Vo_Procedia%20Engineering.pdf Fayaz, Fahim and Danh, Huong T. and Nguyen-Huy, Chinh and Vu, Khanh B. and Bawadi, Abdullah and Vo, Dai-Viet N. (2016) Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol. Procedia Engineering, 148. pp. 646-653. ISSN 1877-7058 http://dx.doi.org/10.1016/j.proeng.2016.06.530 DOI: 10.1016/j.proeng.2016.06.530
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Fayaz, Fahim Danh, Huong T. Nguyen-Huy, Chinh Vu, Khanh B. Bawadi, Abdullah Vo, Dai-Viet N. Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
description	The effect of ceria promotion on Co/Al2O3 catalysts for ethanol dry reforming has been investigated at stoichiometric feed composition and 973 K under atmospheric pressure. Ce-promoted catalysts were synthesized using a wet co-impregnation method and evaluated in a quartz fixed-bed reactor. X-ray diffraction measurements indicated the formation of CeO2, Co3O4 and CoAl2O4 phases on catalyst surface. Ce-addition eased the reduction process of Co3O4 to CoO phase which was subsequently reduced to metallic Co0 form. H2 and CO yields as well as ethanol conversion increased with growing Ce loading and approached the greatest value at 3wt.%Ce followed by a considerable drop beyond this optimal Ce content. Both promoted and unpromoted catalysts were stable with time-on-stream and the improvement of catalytic performance with Ce-addition was reasonably due to the high oxygen storage capacity of CeO2 promoter which oxidizing carbonaceous species. The heterogeneous nature of deposited carbons containing carbon nanofilament and graphite on spent catalyst surface was evident by scanning electron microscopy. However, the filamentous carbon appeared to be predominant on the surface of spent catalyst in comparison with undesirable graphite responsible for catalyst deterioration. Additionally, Ce-promoted catalysts were resistant to carbon deposition.
format	Article
author	Fayaz, Fahim Danh, Huong T. Nguyen-Huy, Chinh Vu, Khanh B. Bawadi, Abdullah Vo, Dai-Viet N.
author_facet	Fayaz, Fahim Danh, Huong T. Nguyen-Huy, Chinh Vu, Khanh B. Bawadi, Abdullah Vo, Dai-Viet N.
author_sort	Fayaz, Fahim
title	Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
title_short	Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
title_full	Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
title_fullStr	Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
title_full_unstemmed	Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol
title_sort	promotional effect of ce-dopant on al2o3-supported co catalysts for syngas production via co2 reforming of ethanol
publisher	Elsevier Ltd
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/ http://umpir.ump.edu.my/id/eprint/13715/1/Fahim_Vo_Procedia%20Engineering.pdf
first_indexed	2023-09-18T22:16:38Z
last_indexed	2023-09-18T22:16:38Z
_version_	1777415381580775424

Promotional Effect of Ce-dopant on Al2O3-supported Co Catalysts for Syngas Production via CO2 Reforming of Ethanol

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