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http://dx.doi.org/10.7316/KHNES.2014.25.2.105

Experimental Study of Hydrogen and Syngas Production over Ni/Ce-ZrO2/Al2O3 Catalysts with Additives  

Cho, Wonjun (DME Technology Research Center, KOGAS)
Yu, Hyejin (DME Technology Research Center, KOGAS)
Mo, Yonggi (DME Technology Research Center, KOGAS)
Ahn, Whaseung (Department of Chemistry and Chemical Engineering, Inha University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.25, no.2, 2014 , pp. 105-113 More about this Journal
Abstract
Performance tests on $Ni/Ce-ZrO_2/Al_2O_3$ catalysts with additives (MgO, $La_2O_3$) were investigated in the combined reforming processes (SCR, ATR, TRM) in order to produce hydrogen and carbon monoxide (it is called "syngas".). The catalyst characterization was conducted using the BET surface analyzer, X-ray diffraction (XRD), SEM, TPR and TGA. The combined reforming process was developed to adjust the syngas ratio depending on the synthetic fuel (methanol, DME and GTL) manufacturing processes. Ni-based catalysts supported on alumina has been generally recommended as a combined reforming reaction catalyst. It was found that both free NiO and complexed NiO species were responsible for the catalytic activity in the combined reforming of methane conversion, and the $Ce-ZrO_2$ binary support employed had improved the oxygen storage capacity and thermal stability. The additives, MgO and $La_2O_3$, also seemed to play an important role to prevent the formation of the carbon deposition over the catalysts. The experimental results were compared with the equilibrium data using a commercial simulation tool (PRO/II).
Keywords
Combined reforming of methane; SCR(Steam-$CO_2$ reforming); ATR(Autothermal reforming); TRM(Tri-reforming); Syngas; $Ni/Ce-ZrO_2/Al_2O_3$ catalyst;
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