Hydrogen Production via Glycerol Dry Reforming over La-Ni/Al2O3 Catalyst

Glycerol (a bio-waste generated from biodiesel production) has been touted as a promising bio-syngas precursor via reforming route. Previous studies have indicated that carbon deposition is the major performance-limiting factor for nickel (Ni) catalyst during glycerol steam reforming. In the current...

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Bibliographic Details
Main Authors: Kah Weng Siew, Hua Chyn Lee, Jolius Gimbun, Chin Kui Cheng
Format: Article
Language:English
Published: Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) 2013-12-01
Series:Bulletin of Chemical Reaction Engineering & Catalysis
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Online Access:http://ejournal.undip.ac.id/index.php/bcrec/article/view/4874
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Summary:Glycerol (a bio-waste generated from biodiesel production) has been touted as a promising bio-syngas precursor via reforming route. Previous studies have indicated that carbon deposition is the major performance-limiting factor for nickel (Ni) catalyst during glycerol steam reforming. In the current paper, dry (CO2)-reforming of glycerol, a new reforming route was carried out over alumina (Al2O3)-supported non-promoted and lanthanum-promoted Ni catalysts. Both sets of catalysts were synthesized via wet co-impregnation procedure. The physicochemical characterization of the catalyst showed that the promoted catalyst possessed smaller metal crystallite size, hence higher metal dispersion compared to the virgin Ni/Al2O3 catalyst. This was also corroborated by the surface images captured by the FESEM analysis. In addition, BET surface area measurement gave 92.05m²/g for non-promoted Ni catalyst whilst promoted catalysts showed an average of 1 to 6% improvement depending on the La loading. Reaction studies at 873 K showed that glycerol dry reforming successfully produced H2 with glycerol conversion and H2 yield that peaked at 9.7% and 25% respectively over 2wt% La content. The optimum catalytic performance by 2%La-Ni/Al2O3 can be attributed to the larger BET surface area and smaller crystallite size that ensured accessibility of active catalytic sites.  © 2013 BCREC UNDIP. All rights reserved<p><em>Received: 12nd May 2013; Revised: 7th October 2013; Accepted: 16th October 2013</em></p><p>[<strong>How to Cite</strong>: Siew, K.W., Lee, H.C., Gimbun, J., Cheng, C.K. (2013). Hydrogen Production via Glycerol Dry Reforming over La-Ni/Al2O3 Catalyst. <strong><em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em></strong>, 8 (2): 160-166. (doi:10.9767/bcrec.8.2.4874.160-166)]</p><p>[<strong>Permalink/DOI</strong>: <a href="http://dx.doi.org/10.9767/bcrec.8.2.4874.160-166">http://dx.doi.org/10.9767/bcrec.8.2.4874.160-166</a>]</p>
ISSN:1978-2993