Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3

In recent times, glycerol has been employed as feedstock for the production of syngas (H 2 and CO) with H 2 as its main constituent. This study centers on dry reforming of glycerol over Ag-promoted Ni/Al 2 O 3 catalysts. Prior to characterization, the catalysts were synthesized using the wet impregn...

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Main Authors: Harun, N., Abidin, S.Z., Osazuwa, O.U., Taufiq-Yap, Y.H., Azizan, M.T.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.22276 /
Published: 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044949107&doi=10.1016%2fj.ijhydene.2018.03.093&partnerID=40&md5=c5b6956e7b0abcd2533216dbad9a9ba5
http://eprints.utp.edu.my/22276/
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spelling utp-eprints.222762019-02-28T02:43:15Z Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3 Harun, N. Abidin, S.Z. Osazuwa, O.U. Taufiq-Yap, Y.H. Azizan, M.T. In recent times, glycerol has been employed as feedstock for the production of syngas (H 2 and CO) with H 2 as its main constituent. This study centers on dry reforming of glycerol over Ag-promoted Ni/Al 2 O 3 catalysts. Prior to characterization, the catalysts were synthesized using the wet impregnation method. The reforming process was carried out using a fixed bed reactor at reactor operating conditions; 873�1173 K, carbon dioxide to glycerol ratio of 0.5 and gas hourly space velocity (WHSV) in the range of 14.4 � 72 L g cat �1 h �1 ). Ag (3)-Ni/Al 2 O 3 gave highest glycerol conversion and hydrogen yield of 40.7 and 32, respectively. The optimum conditions which gave highest H 2 production, minimized methane production and carbon deposition were reaction temperature of 1073 K and carbon dioxide to glycerol ratio of 1:1. This result can attributed to the small metal crystallite size characteristics possessed by Ag (3)�Ni/Al 2 O 3 , which enhanced metal dispersion in the catalyst matrix. Characterization of the spent catalyst revealed the formation of two types of carbon species; encapsulating and filamentous carbon which can be oxidized by O 2 . © 2018 Hydrogen Energy Publications LLC 2019 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044949107&doi=10.1016%2fj.ijhydene.2018.03.093&partnerID=40&md5=c5b6956e7b0abcd2533216dbad9a9ba5 Harun, N. and Abidin, S.Z. and Osazuwa, O.U. and Taufiq-Yap, Y.H. and Azizan, M.T. (2019) Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3. International Journal of Hydrogen Energy . pp. 213-225. http://eprints.utp.edu.my/22276/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description In recent times, glycerol has been employed as feedstock for the production of syngas (H 2 and CO) with H 2 as its main constituent. This study centers on dry reforming of glycerol over Ag-promoted Ni/Al 2 O 3 catalysts. Prior to characterization, the catalysts were synthesized using the wet impregnation method. The reforming process was carried out using a fixed bed reactor at reactor operating conditions; 873�1173 K, carbon dioxide to glycerol ratio of 0.5 and gas hourly space velocity (WHSV) in the range of 14.4 � 72 L g cat �1 h �1 ). Ag (3)-Ni/Al 2 O 3 gave highest glycerol conversion and hydrogen yield of 40.7 and 32, respectively. The optimum conditions which gave highest H 2 production, minimized methane production and carbon deposition were reaction temperature of 1073 K and carbon dioxide to glycerol ratio of 1:1. This result can attributed to the small metal crystallite size characteristics possessed by Ag (3)�Ni/Al 2 O 3 , which enhanced metal dispersion in the catalyst matrix. Characterization of the spent catalyst revealed the formation of two types of carbon species; encapsulating and filamentous carbon which can be oxidized by O 2 . © 2018 Hydrogen Energy Publications LLC
format Article
author Harun, N.
Abidin, S.Z.
Osazuwa, O.U.
Taufiq-Yap, Y.H.
Azizan, M.T.
spellingShingle Harun, N.
Abidin, S.Z.
Osazuwa, O.U.
Taufiq-Yap, Y.H.
Azizan, M.T.
Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
author_sort Harun, N.
title Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
title_short Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
title_full Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
title_fullStr Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
title_full_unstemmed Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al 2 O 3
title_sort hydrogen production from glycerol dry reforming over ag-promoted ni/al 2 o 3
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044949107&doi=10.1016%2fj.ijhydene.2018.03.093&partnerID=40&md5=c5b6956e7b0abcd2533216dbad9a9ba5
http://eprints.utp.edu.my/22276/
_version_ 1741196595924303872
score 11.62408

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