OP-II-3

PP-III-3conversion for the reaction at 700°C was higher for Ni based catalysts than those ofCo based ones. Higher Ni loading from 5 to 10wt% also enhanced gas productionrate (Figure 2). Both Ni and Co catalysts exhibited significant deactivation with time.Types of supporter were significant to catalytic performance for the case of Nicatalysts. For comparison between supports with regards to carbon and hydrogenconversion using 10%wt.Ni and 10%wt.Co loading, the order was as follows:TiO 2 >Dolomite>Al 2 O 3 >no catalyst. On the other hand, for using 5%wt.Ni loading, theorder of the performance was as follows: Al 2 O 3 ≈Dolomite>TiO 2 >no catalyst. Thehighest lower heating value of product gas and H 2 to CO ratio obtained when using10%Ni/TiO 2 and 10%Ni/Al 2 O 3 , respectively (Figure 3).% C or H Conversion70605040302010H in CH4C in CH4H2COCO2a) 5%Ni% C or H Conversion70605040302010H in CH4C in CH4H2COCO2b) 10%Ni% C or H Conversion70605040302010H in CH4C in CH4H2COCO2c) 10%Co0w/ocatalystAlumina Titania Dolomite0w/ocatalystAlumina Titania Dolomite0w/ocatalystAlumina Titania DolomiteFig. 2. Effect of support on gas produced from catalytic reforming of glycerol using: (a) 5%wt.of Ni, (b) 10%wt. of Ni and (c) 10%wt. of Co.LHV (MJ/m 3 )4.54.03.53.02.52.01.51.00.50.0w/ocatalyst5%Ni10%Ni10%CoThermal(a)Alumina Titania DolomiteH 2 /CO1.751.501.251.000.750.50w/ocatalyst5%Ni10%Ni10%CoThermal(b)Alumina Titania DolomiteFig. 3. Quality of product gas: (a) lower heating value (LHV) and (b) H 2 /CO ratio from variouscatalytic reactions at 700°C.References[1]. Fernández, Y., Arenillas, A., Díez, M. A., Pis, J. J. and Menéndez, J. A., Pyrolysis of glycerol overactivated carbons for syngas production, Journal of Analytical and Applied Pyrolysis, Vol. 84(2009), pp. 145-150.[2]. Adhikari, S., Fernando, S. and Haryanto, A., Production of hydrogen by steam reforming ofglycerin over alumina-supported metal catalysts, Catalysis Today, Vol. 129 (2007), pp. 355–364.447