Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming

Glycerol dry reforming was performed in a packed-bed reactor containing 20 wt.% nickel catalyst employing CO2-to-C3H8O3 feed ratios of 0.6 ⩽ CGR ⩽ 5.0 and reaction temperatures between 923 and 1023 K for syngas (H2 and CO) production studies. Liquid N2 physisorption revealed a significant 32-fold in...

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Main Authors:	Hua, Chyn Lee, Kah, Weng Siew, Jolius, Gimbun, Cheng, C. K.
Format:	Article
Language:	English
Published:	Elsevier 2014
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/4/Synthesis%20and%20characterisation%20of%20cement%20clinker.pdf

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recordtype	eprints
spelling	ump-64612017-09-12T07:09:12Z http://umpir.ump.edu.my/id/eprint/6461/ Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming Hua, Chyn Lee Kah, Weng Siew Jolius, Gimbun Cheng, C. K. TP Chemical technology Glycerol dry reforming was performed in a packed-bed reactor containing 20 wt.% nickel catalyst employing CO2-to-C3H8O3 feed ratios of 0.6 ⩽ CGR ⩽ 5.0 and reaction temperatures between 923 and 1023 K for syngas (H2 and CO) production studies. Liquid N2 physisorption revealed a significant 32-fold increase in the Brunauer–Emmett–Teller (BET) specific surface area upon the incorporation of nickel metal onto the cement clinker support, which was also corroborated by field emission scanning electron microscopy (FESEM). In addition, NH3- and CO2-temperature programmed desorption (TPD) analyses exhibited the presence of a strong pair of acid (1061.4 μmol gcat−1) and basic (1.53 × 104 μmol gcat−1) sites on the catalyst. A bunsenite (NiO) species with a crystallite size of 15–18 nm and calcium silicate were successfully identified from the X-ray diffraction (XRD) pattern. Subsequently, the results appraised from the reaction studies confirmed the absence of a direct interaction between CO2 and the glycerol compound during the glycerol dry reforming and that the H2 was primarily produced from the glycerol decomposition. This finding could be ascribed to the chemisorption of both compounds at different active sites, which resulted in glycerol decomposition as the primary reaction pathway. The optimum condition for H2 production via glycerol dry reforming was at a carbon dioxide-to-glycerol ratio (CGR) of unity (at constant Pgly = 14 kPa) and 973 K. Moreover, the glycerol conversion ranged from 70% to 80% at a CGR of 1–1.67. Glycerol dry reforming was discovered to be more feasible for Fischer Tropsch synthesis, as the H2:CO product ratios were <2.0. The post-characterisation of the used catalysts confirmed the presence of whisker-type carbon, which fortunately can be easily removed via oxidation with O2. Elsevier 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6461/4/Synthesis%20and%20characterisation%20of%20cement%20clinker.pdf Hua, Chyn Lee and Kah, Weng Siew and Jolius, Gimbun and Cheng, C. K. (2014) Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming. Chemical Engineering Journal, 255. pp. 245-256. ISSN 1385-8947 http://dx.doi.org/10.1016/j.cej.2014.06.044 DOI: 10.1016/j.cej.2014.06.044
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 Hua, Chyn Lee Kah, Weng Siew Jolius, Gimbun Cheng, C. K. Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
description	Glycerol dry reforming was performed in a packed-bed reactor containing 20 wt.% nickel catalyst employing CO2-to-C3H8O3 feed ratios of 0.6 ⩽ CGR ⩽ 5.0 and reaction temperatures between 923 and 1023 K for syngas (H2 and CO) production studies. Liquid N2 physisorption revealed a significant 32-fold increase in the Brunauer–Emmett–Teller (BET) specific surface area upon the incorporation of nickel metal onto the cement clinker support, which was also corroborated by field emission scanning electron microscopy (FESEM). In addition, NH3- and CO2-temperature programmed desorption (TPD) analyses exhibited the presence of a strong pair of acid (1061.4 μmol gcat−1) and basic (1.53 × 104 μmol gcat−1) sites on the catalyst. A bunsenite (NiO) species with a crystallite size of 15–18 nm and calcium silicate were successfully identified from the X-ray diffraction (XRD) pattern. Subsequently, the results appraised from the reaction studies confirmed the absence of a direct interaction between CO2 and the glycerol compound during the glycerol dry reforming and that the H2 was primarily produced from the glycerol decomposition. This finding could be ascribed to the chemisorption of both compounds at different active sites, which resulted in glycerol decomposition as the primary reaction pathway. The optimum condition for H2 production via glycerol dry reforming was at a carbon dioxide-to-glycerol ratio (CGR) of unity (at constant Pgly = 14 kPa) and 973 K. Moreover, the glycerol conversion ranged from 70% to 80% at a CGR of 1–1.67. Glycerol dry reforming was discovered to be more feasible for Fischer Tropsch synthesis, as the H2:CO product ratios were <2.0. The post-characterisation of the used catalysts confirmed the presence of whisker-type carbon, which fortunately can be easily removed via oxidation with O2.
format	Article
author	Hua, Chyn Lee Kah, Weng Siew Jolius, Gimbun Cheng, C. K.
author_facet	Hua, Chyn Lee Kah, Weng Siew Jolius, Gimbun Cheng, C. K.
author_sort	Hua, Chyn Lee
title	Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
title_short	Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
title_full	Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
title_fullStr	Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
title_full_unstemmed	Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming
title_sort	synthesis and characterisation of cement clinker-supported nickel catalyst for glycerol dry reforming
publisher	Elsevier
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/ http://umpir.ump.edu.my/id/eprint/6461/4/Synthesis%20and%20characterisation%20of%20cement%20clinker.pdf
first_indexed	2023-09-18T22:02:13Z
last_indexed	2023-09-18T22:02:13Z
_version_	1777414473782394880

Synthesis and Characterisation of Cement Clinker-Supported Nickel Catalyst for Glycerol Dry Reforming

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