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

Kah Weng Siew  -  Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan Pahang,, Malaysia
Hua Chyn Lee  -  Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan Pahang,, Malaysia
Jolius Gimbun  -  Center of Excellence for Advanced Research in Fluid Flow, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan Pahang,, Malaysia
*Chin Kui Cheng  -  Center of Excellence for Advanced Research in Fluid Flow, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan Pahang,, Malaysia
Received: 12 May 2013; Published: 1 Dec 2013.
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Abstract
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

Received: 12nd May 2013; Revised: 7th October 2013; Accepted: 16th October 2013

[How to Cite: Siew, K.W., Lee, H.C., Gimbun, J., Cheng, C.K. (2013). Hydrogen Production via Glycerol Dry Reforming over La-Ni/Al2O3 Catalyst. Bulletin of Chemical Reaction Engineering & Catalysis, 8 (2): 160-166. (doi:10.9767/bcrec.8.2.4874.160-166)]

[Permalink/DOI: http://dx.doi.org/10.9767/bcrec.8.2.4874.160-166]

Keywords: Biofuel; Dry Reforming; Glycerol; Hydrogen

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Article Info
Section: Original Research Articles
Language: EN
In 2013: BCREC Volume 8 Issue 2 Year 2013 (SCOPUS Indexed, December 2013)
Statistics: 1455 1571
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