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Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading

Ethanol dry reforming has been studied over La-promoted Ni catalysts supported on Al2O3 with different promoter loadings at varying CO2 partial pressure of 20-50 kPa. Catalysts were prepared via co-impregnation technique and characterized using BET surface area, X-ray diffraction measurement, temper...

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Main Authors: Mahadi, Bahari, Goo, Boon Chin, Pham, Thong L. M., Tan, Ji Siang, Danh, Huong T., Nurul, Ainirazali, 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/13714/1/Mahadi_Vo_Procedia%20Engineering.pdf
http://umpir.ump.edu.my/id/eprint/13714/
http://dx.doi.org/10.1016/j.proeng.2016.06.531
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spelling my.ump.umpir.137142019-10-18T02:59:34Z http://umpir.ump.edu.my/id/eprint/13714/ Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading Mahadi, Bahari Goo, Boon Chin Pham, Thong L. M. Tan, Ji Siang Danh, Huong T. Nurul, Ainirazali Vo, Dai-Viet N. TP Chemical technology Ethanol dry reforming has been studied over La-promoted Ni catalysts supported on Al2O3 with different promoter loadings at varying CO2 partial pressure of 20-50 kPa. Catalysts were prepared via co-impregnation technique and characterized using BET surface area, X-ray diffraction measurement, temperature-programmed calcination and scanning electron microscopy. Doped and undoped catalysts possessed high surface area of about 86-108 m2 g-1 and La promoter was well-dispersed on support surface. Xray diffraction measurements indicated the formation of La2O3, NiO and NiAl2O4 phases in line with temperature-programmed calcination results. La-addition enhanced the dispersion of NiO particles and reduced the agglomeration of metal oxides. Both C2H5OH and CO2 conversions improved with increasing CO2 partial pressure rationally due to the growing secondary CO2 reforming of CH4 reaction. The ratio of H2/CO produced from ethanol dry reforming varied from 1.1 to 1.4 favored for usage as feedstocks of Fischer-Tropsch synthesis. The yield of H2 and CO also enhanced with increasing CO2 partial pressure whilst the optimal La loading in terms of C2H5OH conversion was observed at 3%La and catalytic activity increased with promoter addition reasonably owing to the redox properties of La promoter. CO2 reforming of ethanol reaction appeared via ethanol decomposition to CH4 intermediate product, which was subsequently converted to CO and H2 mixture through CH4 dry reforming reaction. Elsevier Ltd 2016 Article PeerReviewed application/pdf en cc_by_nc_nd http://umpir.ump.edu.my/id/eprint/13714/1/Mahadi_Vo_Procedia%20Engineering.pdf Mahadi, Bahari and Goo, Boon Chin and Pham, Thong L. M. and Tan, Ji Siang and Danh, Huong T. and Nurul, Ainirazali and Vo, Dai-Viet N. (2016) Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading. Procedia Engineering, 148. pp. 654-661. ISSN 1877-7058 http://dx.doi.org/10.1016/j.proeng.2016.06.531 DOI: 10.1016/j.proeng.2016.06.531
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Mahadi, Bahari
Goo, Boon Chin
Pham, Thong L. M.
Tan, Ji Siang
Danh, Huong T.
Nurul, Ainirazali
Vo, Dai-Viet N.
Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
description Ethanol dry reforming has been studied over La-promoted Ni catalysts supported on Al2O3 with different promoter loadings at varying CO2 partial pressure of 20-50 kPa. Catalysts were prepared via co-impregnation technique and characterized using BET surface area, X-ray diffraction measurement, temperature-programmed calcination and scanning electron microscopy. Doped and undoped catalysts possessed high surface area of about 86-108 m2 g-1 and La promoter was well-dispersed on support surface. Xray diffraction measurements indicated the formation of La2O3, NiO and NiAl2O4 phases in line with temperature-programmed calcination results. La-addition enhanced the dispersion of NiO particles and reduced the agglomeration of metal oxides. Both C2H5OH and CO2 conversions improved with increasing CO2 partial pressure rationally due to the growing secondary CO2 reforming of CH4 reaction. The ratio of H2/CO produced from ethanol dry reforming varied from 1.1 to 1.4 favored for usage as feedstocks of Fischer-Tropsch synthesis. The yield of H2 and CO also enhanced with increasing CO2 partial pressure whilst the optimal La loading in terms of C2H5OH conversion was observed at 3%La and catalytic activity increased with promoter addition reasonably owing to the redox properties of La promoter. CO2 reforming of ethanol reaction appeared via ethanol decomposition to CH4 intermediate product, which was subsequently converted to CO and H2 mixture through CH4 dry reforming reaction.
format Article
author Mahadi, Bahari
Goo, Boon Chin
Pham, Thong L. M.
Tan, Ji Siang
Danh, Huong T.
Nurul, Ainirazali
Vo, Dai-Viet N.
author_facet Mahadi, Bahari
Goo, Boon Chin
Pham, Thong L. M.
Tan, Ji Siang
Danh, Huong T.
Nurul, Ainirazali
Vo, Dai-Viet N.
author_sort Mahadi, Bahari
title Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
title_short Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
title_full Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
title_fullStr Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
title_full_unstemmed Hydrogen-rich Syngas Production from Ethanol Dry Reforming on La-doped Ni/Al2O3 Catalysts: Effect of Promoter Loading
title_sort hydrogen-rich syngas production from ethanol dry reforming on la-doped ni/al2o3 catalysts: effect of promoter loading
publisher Elsevier Ltd
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/13714/1/Mahadi_Vo_Procedia%20Engineering.pdf
http://umpir.ump.edu.my/id/eprint/13714/
http://dx.doi.org/10.1016/j.proeng.2016.06.531
_version_ 1648741076929871872
score 13.211869

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