Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst

This paper reports on the catalytic pyrolysis of glycerol into syngas over a 3 wt%Ce-20 wt%Ni/77 wt% α-Al2O3 catalyst and at reaction temperatures of 973 K, 1023 K and 1073 K. NH3- and CO2-TPD analyses have revealed that the as-synthesized catalyst was net acidic with acid-to-basic site ratio of 1.2...

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Main Authors:	Nor Shahirah, Mohd Nasir, Jolius, Gimbun, Asmida, Ideris, Khan, Maksudur R., Cheng, C. K.
Format:	Article
Language:	English English
Published:	Elsevier 2017
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/1/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst.pdf http://umpir.ump.edu.my/id/eprint/17421/7/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst%201.pdf

id	ump-17421
recordtype	eprints
spelling	ump-174212017-12-15T01:02:07Z http://umpir.ump.edu.my/id/eprint/17421/ Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst Nor Shahirah, Mohd Nasir Jolius, Gimbun Asmida, Ideris Khan, Maksudur R. Cheng, C. K. TP Chemical technology This paper reports on the catalytic pyrolysis of glycerol into syngas over a 3 wt%Ce-20 wt%Ni/77 wt% α-Al2O3 catalyst and at reaction temperatures of 973 K, 1023 K and 1073 K. NH3- and CO2-TPD analyses have revealed that the as-synthesized catalyst was net acidic with acid-to-basic site ratio of 1.24. This provides ideal conditions for chemisorption of glycerol. In addition, the BET specific surface area was 2.89 m2 g−1. The small surface area can be attributed to the thermally stable α-Al2O3 support. In addition, the average crystallite size was 40.22 nm. The catalytic glycerol pyrolysis produced gaseous products that were comprised of H2, CO, CO2 and CH4 only with H2:CO ratios that were consistently less than 2.0. This ratio is suitable for Fischer-Tropsch synthesis. The yields of CO2 and CH4 were several folds lower than the yields of H2 and CO, indicating that the latter were from primary reaction, viz. glycerol decomposition whilst the former were from secondary competing reactions. In addition, the activation energy obtained via Langmuir-Hinshelwood model was 25.34 kJ mol−1. Used catalyst characterization showed that the carbonaceous deposit was in the forms of whisker-type. This type of carbon deposit would not physically deactivate the catalyst. Elsevier 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/17421/1/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/17421/7/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst%201.pdf Nor Shahirah, Mohd Nasir and Jolius, Gimbun and Asmida, Ideris and Khan, Maksudur R. and Cheng, C. K. (2017) Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst. Renewable Energy, 107. pp. 223-224. ISSN 0960-1481 https://doi.org/10.1016/j.renene.2017.02.002 DOI: org/10.1016/j.renene.2017.02.002
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 Jolius, Gimbun Asmida, Ideris Khan, Maksudur R. Cheng, C. K. Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
description	This paper reports on the catalytic pyrolysis of glycerol into syngas over a 3 wt%Ce-20 wt%Ni/77 wt% α-Al2O3 catalyst and at reaction temperatures of 973 K, 1023 K and 1073 K. NH3- and CO2-TPD analyses have revealed that the as-synthesized catalyst was net acidic with acid-to-basic site ratio of 1.24. This provides ideal conditions for chemisorption of glycerol. In addition, the BET specific surface area was 2.89 m2 g−1. The small surface area can be attributed to the thermally stable α-Al2O3 support. In addition, the average crystallite size was 40.22 nm. The catalytic glycerol pyrolysis produced gaseous products that were comprised of H2, CO, CO2 and CH4 only with H2:CO ratios that were consistently less than 2.0. This ratio is suitable for Fischer-Tropsch synthesis. The yields of CO2 and CH4 were several folds lower than the yields of H2 and CO, indicating that the latter were from primary reaction, viz. glycerol decomposition whilst the former were from secondary competing reactions. In addition, the activation energy obtained via Langmuir-Hinshelwood model was 25.34 kJ mol−1. Used catalyst characterization showed that the carbonaceous deposit was in the forms of whisker-type. This type of carbon deposit would not physically deactivate the catalyst.
format	Article
author	Nor Shahirah, Mohd Nasir Jolius, Gimbun Asmida, Ideris Khan, Maksudur R. Cheng, C. K.
author_facet	Nor Shahirah, Mohd Nasir Jolius, Gimbun Asmida, Ideris Khan, Maksudur R. Cheng, C. K.
author_sort	Nor Shahirah, Mohd Nasir
title	Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
title_short	Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
title_full	Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
title_fullStr	Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
title_full_unstemmed	Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst
title_sort	catalytic pyrolysis of glycerol into syngas over ceria-promoted ni/α-al2o3 catalyst
publisher	Elsevier
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/ http://umpir.ump.edu.my/id/eprint/17421/1/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst.pdf http://umpir.ump.edu.my/id/eprint/17421/7/Catalytic%20pyrolysis%20of%20glycerol%20into%20syngas%20over%20ceria-promoted%20Ni-%CE%B1-Al2O3%20catalyst%201.pdf
first_indexed	2023-09-18T22:24:02Z
last_indexed	2023-09-18T22:24:02Z
_version_	1777415846765789184

Catalytic Pyrolysis of Glycerol Into Syngas Over Ceria-promoted Ni/α-Al2O3 Catalyst

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