Dry reforming of methane over oil palm shell activated carbon and ZSM-5 supported cobalt catalysts
- 25 May 2017
- journal article
- research article
- Published by Taylor & Francis Ltd in International Journal of Green Energy
- Vol. 14 (10), 831-838
- https://doi.org/10.1080/15435075.2017.1334659
Abstract
In this study, cobalt supported oil palm shell activated carbon (Co/OPS-AC) and ZSM-5 zeolite (Co/ZSM-5) catalysts have been prepared for dry reforming of methane. Cobalt ratios of 6.0 and 14.0 wt% were deposited via wet impregnation method to the OPS-AC and ZSM-5 catalysts. The catalysts were characterized by XRD, N2 adsorption--desorption isotherms, BET surface area, SEM, FESEM-EDX, TPR-H2, and TPD-NH3. The dry reforming of methane was performed using a micro reactor system under the condition of 10,000 ml/h.g-cat, 3 atm, CH4/CO2 ratio of 1.2:1.0 and temperature range from 923 K to 1023 K. The gaseous products were analyzed by gas chromatography (GC) with thermal conductivity detector (TCD) and further quantified to determine the conversions of CH4 and CO2, and the yields of CO and H2. Experimental results revealed both catalysts exhibited lower conversions of CO2 and CH4 with the increase in temperature from 923 K to 1023 K. The reduced conversions may be due to the formation of carboneous substance on the catalyst known as coking. Comparatively, Co/OPS-AC gave higher conversions of CO2 and CH4 as well as higher yields of H2 and CO as it has a higher surface area than Co/ZSM-5 which subsequently rendered higher activity for the reforming of methane. With the increasing cobalt loadings and reaction temperature, OPS-AC(14) catalyst exhibited improved activity and H2/CO ratio. Based on these results, cobalt supported OPS activated carbon catalyst was suggested to be more effective for CO2 and CH4 conversions.Keywords
Funding Information
- Malaysia Ministry of Higher Education under Fundamental Research Grant Scheme (Vot. No.4F160)
This publication has 15 references indexed in Scilit:
- Cationic and anionic modifications of oil palm empty fruit bunch fibers for the removal of dyes from aqueous solutionsBioresource Technology, 2012
- Investigation into the shape selectivity of zeolite catalysts for biomass conversionJournal of Catalysis, 2011
- A packed bed membrane reactor for production of biodiesel using activated carbon supported catalystBioresource Technology, 2011
- Development of dry reforming catalysts at elevated pressure: D-optimal vs. full factorial designCatalysis Today, 2011
- Synergetic effect of a mixture of activated carbon+Ni/Al2O3 used as catalysts for the CO2 reforming of CH4Applied Catalysis A: General, 2010
- An experimental investigation into the CO2 gasification of deactivated activated-carbon catalyst used for methane decomposition to produce hydrogenInternational Journal of Hydrogen Energy, 2010
- Deactivation of palm shell-based activated carbon catalyst used for hydrogen production by thermocatalytic decomposition of methaneInternational Journal of Hydrogen Energy, 2009
- Low cost removal of disperse dyes from aqueous solution using palm ashDyes and Pigments, 2007
- Kinetic studies of copper ion adsorption on palm kernel fibreJournal of Hazardous Materials, 2006
- Cobalt–magnesia catalyst by oxalate co-precipitation method for dry reforming of methane under pressureCatalysis Communications, 2004