A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst

The current paper reports on the kinetics of syngas production from glycerol pyrolysis over the alumina-supported nickel catalyst that was promoted with samarium, a rare earth element. The catalysts were synthesized via wet-impregnation method and its physicochemical properties were subsequently cha...

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Main Authors:	Nor Shahirah, Mohd Nasir, Sureena, Abdullah, Jolius, Gimbun, Ng, Yun Hau, Cheng, C. K.
Format:	Article
Language:	English English
Published:	Elsevier 2016
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/1/Shahirah%20Paper.pdf http://umpir.ump.edu.my/id/eprint/13068/7/A%20Study%20on%20the%20Kinetics%20of%20Syngas%20Production%20from%20Glycerol%20Over%20Alumina-Supported%20Samarium%E2%80%93Nickel%20Catalyst.pdf

id	ump-13068
recordtype	eprints
spelling	ump-130682017-09-13T01:51:30Z http://umpir.ump.edu.my/id/eprint/13068/ A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst Nor Shahirah, Mohd Nasir Sureena, Abdullah Jolius, Gimbun Ng, Yun Hau Cheng, C. K. TP Chemical technology The current paper reports on the kinetics of syngas production from glycerol pyrolysis over the alumina-supported nickel catalyst that was promoted with samarium, a rare earth element. The catalysts were synthesized via wet-impregnation method and its physicochemical properties were subsequently characterized. Reaction studies were performed in a 10 mm-ID stainless steel fixed bed reactor with reaction temperatures maintained at 973, 1023 and 1073 K, respectively, employing weight-hourly-space-velocity of 4.5�104 ml g-�1 h-�1. The textural property examination showed that BET specific surface area was 2.09 m2 g-�1 for the unpromoted catalyst while the samarium promoted catalyst has 2.68 m2 g-�1. Interestingly, the results were supported by the FESEM images which showed that the promoted catalyst has smaller particle size compared to the unpromoted catalyst. Furthermore, the NH3- and CO2-TPD analyses proved that the strong and weak acid-basic sites were present. During glycerol pyrolysis, the syngas was produced directly from the glycerol decomposition. This has created H2:CO ratios that were always lower than 2.0, which is suitable for Fischer-Tropsch synthesis. The activation energy based on power law modeling for the unpromoted catalyst was 35.8 kJ mol-�1 and 23.4 kJ mol-�1 for Sm-promoted catalyst with reaction order 1.20 and 1.10, respectively. Experimental data were also fitted to the LangmuireHinshelwood model. Upon subjected to both statistical and thermodynamics consistency criteria, it can be conclusively proved that single-site mechanisms with associative adsorption of glycerol best describe the glycerol pyrolysis over both unpromoted and Sm promoted catalyst in the current work, with regression coefficient values of more than 0.9. Elsevier 2016-05-18 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/13068/1/Shahirah%20Paper.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/13068/7/A%20Study%20on%20the%20Kinetics%20of%20Syngas%20Production%20from%20Glycerol%20Over%20Alumina-Supported%20Samarium%E2%80%93Nickel%20Catalyst.pdf Nor Shahirah, Mohd Nasir and Sureena, Abdullah and Jolius, Gimbun and Ng, Yun Hau and Cheng, C. K. (2016) A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst. International Journal of Hydrogen Energy, 41 (25). pp. 10568-10577. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2016.04.193 DOI: 10.1016/j.ijhydene.2016.04.193
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Nor Shahirah, Mohd Nasir Sureena, Abdullah Jolius, Gimbun Ng, Yun Hau Cheng, C. K. A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
description	The current paper reports on the kinetics of syngas production from glycerol pyrolysis over the alumina-supported nickel catalyst that was promoted with samarium, a rare earth element. The catalysts were synthesized via wet-impregnation method and its physicochemical properties were subsequently characterized. Reaction studies were performed in a 10 mm-ID stainless steel fixed bed reactor with reaction temperatures maintained at 973, 1023 and 1073 K, respectively, employing weight-hourly-space-velocity of 4.5�104 ml g-�1 h-�1. The textural property examination showed that BET specific surface area was 2.09 m2 g-�1 for the unpromoted catalyst while the samarium promoted catalyst has 2.68 m2 g-�1. Interestingly, the results were supported by the FESEM images which showed that the promoted catalyst has smaller particle size compared to the unpromoted catalyst. Furthermore, the NH3- and CO2-TPD analyses proved that the strong and weak acid-basic sites were present. During glycerol pyrolysis, the syngas was produced directly from the glycerol decomposition. This has created H2:CO ratios that were always lower than 2.0, which is suitable for Fischer-Tropsch synthesis. The activation energy based on power law modeling for the unpromoted catalyst was 35.8 kJ mol-�1 and 23.4 kJ mol-�1 for Sm-promoted catalyst with reaction order 1.20 and 1.10, respectively. Experimental data were also fitted to the LangmuireHinshelwood model. Upon subjected to both statistical and thermodynamics consistency criteria, it can be conclusively proved that single-site mechanisms with associative adsorption of glycerol best describe the glycerol pyrolysis over both unpromoted and Sm promoted catalyst in the current work, with regression coefficient values of more than 0.9.
format	Article
author	Nor Shahirah, Mohd Nasir Sureena, Abdullah Jolius, Gimbun Ng, Yun Hau Cheng, C. K.
author_facet	Nor Shahirah, Mohd Nasir Sureena, Abdullah Jolius, Gimbun Ng, Yun Hau Cheng, C. K.
author_sort	Nor Shahirah, Mohd Nasir
title	A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
title_short	A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
title_full	A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
title_fullStr	A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
title_full_unstemmed	A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst
title_sort	study on the kinetics of syngas production from glycerol over alumina-supported samarium-nickel catalyst
publisher	Elsevier
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/ http://umpir.ump.edu.my/id/eprint/13068/1/Shahirah%20Paper.pdf http://umpir.ump.edu.my/id/eprint/13068/7/A%20Study%20on%20the%20Kinetics%20of%20Syngas%20Production%20from%20Glycerol%20Over%20Alumina-Supported%20Samarium%E2%80%93Nickel%20Catalyst.pdf
first_indexed	2023-09-18T22:15:16Z
last_indexed	2023-09-18T22:15:16Z
_version_	1777415294573084672

A Study on the Kinetics of Syngas Production from Glycerol over Alumina-Supported Samarium-Nickel Catalyst

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