Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics....

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Main Authors:	Fahim, Fayaz, Long, Giang Bach, Mahadi, Bahari, Trinh, Duy Nguyen, Khanh, B. Vu, Ramesh, Kanthasamy, Chanatip, Samart, Chinh, Nguyen‐Huy, Dai‐Viet, N. Vo
Format:	Article
Language:	English
Published:	Wiley Online Library 2019
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/1/Stability%20evaluation%20of%20ethanol%20dry%20reforming%20on%20Lanthania%E2%80%90doped.pdf

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recordtype	eprints
spelling	ump-247622019-07-17T02:03:39Z http://umpir.ump.edu.my/id/eprint/24762/ Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation Fahim, Fayaz Long, Giang Bach Mahadi, Bahari Trinh, Duy Nguyen Khanh, B. Vu Ramesh, Kanthasamy Chanatip, Samart Chinh, Nguyen‐Huy Dai‐Viet, N. Vo TP Chemical technology Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics. Catalysts were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman, and X‐ray photoelectron spectroscopy (XPS) measurements whilst catalytic EDR performance of La‐promoted and unpromoted 10%Co/Al2O3 prepared via wet impregnation technique was investigated at 973 K for 72 h using a stoichiometric feed ratio (C2H5OH/CO2 = 1/1). La promoter substantially enhanced both metal dispersion and metal surface area from 0.11% to 0.64% and 0.08 to 0.43 m2 g−1, respectively. Ethanol and CO2 conversions appeared to be stable within 50 to 72 h after experiencing an initial activity drop. The conversion of C2H5OH and CO2 for La‐promoted catalyst was about 1.65 and 1.34 times greater than unpromoted counterpart in this order. The carbonaceous deposition was considerably decreased from 55.6% to 36.8% with La promotion due to La2O2CO3 intermediate formation. Additionally, 3%La‐10%Co/Al2O3 possessed greater oxygen vacancies acting as active sites for CO2adsorption and hence increasing carbon gasification. Even though graphitic and filamentous carbons were formed on used catalyst surface, La‐addition diminished graphite formation and increased the reactiveness of amorphous carbon. Wiley Online Library 2019-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24762/1/Stability%20evaluation%20of%20ethanol%20dry%20reforming%20on%20Lanthania%E2%80%90doped.pdf Fahim, Fayaz and Long, Giang Bach and Mahadi, Bahari and Trinh, Duy Nguyen and Khanh, B. Vu and Ramesh, Kanthasamy and Chanatip, Samart and Chinh, Nguyen‐Huy and Dai‐Viet, N. Vo (2019) Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation. International Journal of Energy Research, 43 (1). pp. 405-416. ISSN 0363-907X (print); 1099-114X (online) http://doi.org/10.1002/er.4274 http://doi.org/10.1002/er.4274
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 Fahim, Fayaz Long, Giang Bach Mahadi, Bahari Trinh, Duy Nguyen Khanh, B. Vu Ramesh, Kanthasamy Chanatip, Samart Chinh, Nguyen‐Huy Dai‐Viet, N. Vo Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
description	Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics. Catalysts were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman, and X‐ray photoelectron spectroscopy (XPS) measurements whilst catalytic EDR performance of La‐promoted and unpromoted 10%Co/Al2O3 prepared via wet impregnation technique was investigated at 973 K for 72 h using a stoichiometric feed ratio (C2H5OH/CO2 = 1/1). La promoter substantially enhanced both metal dispersion and metal surface area from 0.11% to 0.64% and 0.08 to 0.43 m2 g−1, respectively. Ethanol and CO2 conversions appeared to be stable within 50 to 72 h after experiencing an initial activity drop. The conversion of C2H5OH and CO2 for La‐promoted catalyst was about 1.65 and 1.34 times greater than unpromoted counterpart in this order. The carbonaceous deposition was considerably decreased from 55.6% to 36.8% with La promotion due to La2O2CO3 intermediate formation. Additionally, 3%La‐10%Co/Al2O3 possessed greater oxygen vacancies acting as active sites for CO2adsorption and hence increasing carbon gasification. Even though graphitic and filamentous carbons were formed on used catalyst surface, La‐addition diminished graphite formation and increased the reactiveness of amorphous carbon.
format	Article
author	Fahim, Fayaz Long, Giang Bach Mahadi, Bahari Trinh, Duy Nguyen Khanh, B. Vu Ramesh, Kanthasamy Chanatip, Samart Chinh, Nguyen‐Huy Dai‐Viet, N. Vo
author_facet	Fahim, Fayaz Long, Giang Bach Mahadi, Bahari Trinh, Duy Nguyen Khanh, B. Vu Ramesh, Kanthasamy Chanatip, Samart Chinh, Nguyen‐Huy Dai‐Viet, N. Vo
author_sort	Fahim, Fayaz
title	Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
title_short	Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
title_full	Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
title_fullStr	Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
title_full_unstemmed	Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
title_sort	stability evaluation of ethanol dry reforming on lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation
publisher	Wiley Online Library
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/ http://umpir.ump.edu.my/id/eprint/24762/1/Stability%20evaluation%20of%20ethanol%20dry%20reforming%20on%20Lanthania%E2%80%90doped.pdf
first_indexed	2023-09-18T22:37:40Z
last_indexed	2023-09-18T22:37:40Z
_version_	1777416704327942144

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

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