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Materials 2014, 7(3), 2257-2272; doi:10.3390/ma7032257
Article

Investigation of the Process Conditions for Hydrogen Production by Steam Reforming of Glycerol over Ni/Al2O3 Catalyst Using Response Surface Methodology (RSM)

1,* , 1,2,* , 3
 and 1
Received: 5 December 2013; in revised form: 27 February 2014 / Accepted: 7 March 2014 / Published: 19 March 2014
(This article belongs to the Section Materials for Energy Applications)
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Abstract: In this work; a response surface methodology (RSM) was implemented to investigate the process variables in a hydrogen production system. The effects of five independent variables; namely the temperature (X1); the flow rate (X2); the catalyst weight (X3); the catalyst loading (X4) and the glycerol-water molar ratio (X5) on the H2 yield (Y1) and the conversion of glycerol to gaseous products (Y2) were explored. Using multiple regression analysis; the experimental results of the H2 yield and the glycerol conversion to gases were fit to quadratic polynomial models. The proposed mathematical models have correlated the dependent factors well within the limits that were being examined. The best values of the process variables were a temperature of approximately 600 °C; a feed flow rate of 0.05 mL/min; a catalyst weight of 0.2 g; a catalyst loading of 20% and a glycerol-water molar ratio of approximately 12; where the H2 yield was predicted to be 57.6% and the conversion of glycerol was predicted to be 75%. To validate the proposed models; statistical analysis using a two-sample t-test was performed; and the results showed that the models could predict the responses satisfactorily within the limits of the variables that were studied.
Keywords: glycerol reforming; hydrogen production; response surface methodology; nickel catalyst glycerol reforming; hydrogen production; response surface methodology; nickel catalyst
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Ebshish, A.; Yaakob, Z.; Taufiq-Yap, Y.H.; Bshish, A. Investigation of the Process Conditions for Hydrogen Production by Steam Reforming of Glycerol over Ni/Al2O3 Catalyst Using Response Surface Methodology (RSM). Materials 2014, 7, 2257-2272.

AMA Style

Ebshish A, Yaakob Z, Taufiq-Yap YH, Bshish A. Investigation of the Process Conditions for Hydrogen Production by Steam Reforming of Glycerol over Ni/Al2O3 Catalyst Using Response Surface Methodology (RSM). Materials. 2014; 7(3):2257-2272.

Chicago/Turabian Style

Ebshish, Ali; Yaakob, Zahira; Taufiq-Yap, Yun H.; Bshish, Ahmed. 2014. "Investigation of the Process Conditions for Hydrogen Production by Steam Reforming of Glycerol over Ni/Al2O3 Catalyst Using Response Surface Methodology (RSM)." Materials 7, no. 3: 2257-2272.


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