Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis

The current paper reports on the kinetics of glycerol reforming over the alumina-supported Ni catalyst that was promoted with rare earth elements. The catalysts were synthesized via wet impregnation method with formulations of 3 wt% Sm-20 wt% Ni/77 wt% Al2O3. The characterizations of all the assynt...

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Main Authors:	Nor Shahirah, Mohd Nasir, Ayodele, Bamidele V., Jolius, Gimbun, Cheng, C. K.
Format:	Article
Language:	English
Published:	Department of Chemical Engineering, Diponegoro University 2016
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/1/10050-24058-1-PB.pdf

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recordtype	eprints
spelling	ump-125482019-08-28T07:03:50Z http://umpir.ump.edu.my/id/eprint/12548/ Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis Nor Shahirah, Mohd Nasir Ayodele, Bamidele V. Jolius, Gimbun Cheng, C. K. TP Chemical technology The current paper reports on the kinetics of glycerol reforming over the alumina-supported Ni catalyst that was promoted with rare earth elements. The catalysts were synthesized via wet impregnation method with formulations of 3 wt% Sm-20 wt% Ni/77 wt% Al2O3. The characterizations of all the assynthesized catalysts were carried out, viz. BET specific surface area measurements, thermogravimetri analysis for temperature-programmed calcination studies, FESEM for surface imaging, XRD to obtain diffraction patterns, XRF for elemental analysis, etc.. Reaction studies were performed in a stainless steel fixed bed reactor with reaction temperatures set at 973, 1023 and 1073 K employing weight hourly space velocity (WHSV) of 4.5×104 mL g-1 h-1. Agilent GC with TCD capillary column was used to analyze gas compositions. Results gathered showed that the BET specific surface area was 2.09 m2.g-1 for the unpromoted Ni catalyst while for the promoted catalysts, was 2.68 m2.g-1. Significantly,the BET results were supported by the FESEM images which showed promoted catalysts exhibit smaller particle size compared to the unpromoted catalyst. It can be deduced that the promoter can increase metal dispersion on alumina support, hence decreasing the size of particles. The TGA analysis consistently showed four peaks which represent water removal at temperature 373-463 K, followed by decomposition of nickel nitrate to produce nickel oxide. From reaction results for Sm promotion showed glycerol conversion, XG of 27% which was 7% higher than unpromoted catalyst. The syngas productions were produced from glycerol decomposition and created H2:CO product ratio which always lower than 2.0. The H2:CO product ratio of 3 wt% Sm promoted Ni/Al2O3 catalyst was 1.70 at reaction temperature of 973 K and glycerol partial pressure of 18 kPa and suitable enough for Fischer-Tropsch synthesis. Department of Chemical Engineering, Diponegoro University 2016 Article PeerReviewed application/pdf en cc_by_sa http://umpir.ump.edu.my/id/eprint/12548/1/10050-24058-1-PB.pdf Nor Shahirah, Mohd Nasir and Ayodele, Bamidele V. and Jolius, Gimbun and Cheng, C. K. (2016) Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (2). pp. 238-244. ISSN 1978-2993 http://dx.doi.org/10.9767/bcrec.11.2.555.238-244 DOI: 10.9767/bcrec.11.2.555.238-244
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 Nor Shahirah, Mohd Nasir Ayodele, Bamidele V. Jolius, Gimbun Cheng, C. K. Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
description	The current paper reports on the kinetics of glycerol reforming over the alumina-supported Ni catalyst that was promoted with rare earth elements. The catalysts were synthesized via wet impregnation method with formulations of 3 wt% Sm-20 wt% Ni/77 wt% Al2O3. The characterizations of all the assynthesized catalysts were carried out, viz. BET specific surface area measurements, thermogravimetri analysis for temperature-programmed calcination studies, FESEM for surface imaging, XRD to obtain diffraction patterns, XRF for elemental analysis, etc.. Reaction studies were performed in a stainless steel fixed bed reactor with reaction temperatures set at 973, 1023 and 1073 K employing weight hourly space velocity (WHSV) of 4.5×104 mL g-1 h-1. Agilent GC with TCD capillary column was used to analyze gas compositions. Results gathered showed that the BET specific surface area was 2.09 m2.g-1 for the unpromoted Ni catalyst while for the promoted catalysts, was 2.68 m2.g-1. Significantly,the BET results were supported by the FESEM images which showed promoted catalysts exhibit smaller particle size compared to the unpromoted catalyst. It can be deduced that the promoter can increase metal dispersion on alumina support, hence decreasing the size of particles. The TGA analysis consistently showed four peaks which represent water removal at temperature 373-463 K, followed by decomposition of nickel nitrate to produce nickel oxide. From reaction results for Sm promotion showed glycerol conversion, XG of 27% which was 7% higher than unpromoted catalyst. The syngas productions were produced from glycerol decomposition and created H2:CO product ratio which always lower than 2.0. The H2:CO product ratio of 3 wt% Sm promoted Ni/Al2O3 catalyst was 1.70 at reaction temperature of 973 K and glycerol partial pressure of 18 kPa and suitable enough for Fischer-Tropsch synthesis.
format	Article
author	Nor Shahirah, Mohd Nasir Ayodele, Bamidele V. Jolius, Gimbun Cheng, C. K.
author_facet	Nor Shahirah, Mohd Nasir Ayodele, Bamidele V. Jolius, Gimbun Cheng, C. K.
author_sort	Nor Shahirah, Mohd Nasir
title	Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
title_short	Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
title_full	Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
title_fullStr	Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
title_full_unstemmed	Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis
title_sort	samarium promoted ni/al2o3 catalysts for syngas production from glycerol pyrolysis
publisher	Department of Chemical Engineering, Diponegoro University
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/ http://umpir.ump.edu.my/id/eprint/12548/1/10050-24058-1-PB.pdf
first_indexed	2023-09-18T22:14:19Z
last_indexed	2023-09-18T22:14:19Z
_version_	1777415235055910912

Samarium Promoted Ni/Al2O3 Catalysts for Syngas Production from Glycerol Pyrolysis

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