Steam reforming of liquid petroleum gas over Mn-promoted Ni/γ-Al2O3 catalysts

• Published in: The Korean journal of chemical engineering 2010, 27(4), 127, pp.1132-1138
• Main Authors: Park, Jae Hyun, Lee, Doohwan, Lee, Hyun Chul, Park, Eun Duck
• Format: Article
• Language: English
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Reaction Engineering; 화학공학
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-010-0212-9

Three different Mn-promoted Ni/ γ -Al 2 O 3 catalysts, Mn/Ni/ γ -Al 2 O 3 , Mn-Ni/ γ -Al 2 O 3 and Ni/Mn/ γ -Al 2 O 3 , were prepared and applied to the steam reforming of liquid petroleum gas (LPG) mainly composed of propane and butane. For comparison, Ni/ γ -Al 2 O 3 catalysts containing different amount of Ni were also examined. In the case of the Ni/ γ -Al 2 O 3 catalysts, 4.1 wt% Ni/ γ -Al 2 O 3 showed the stable catalytic activity with the least amount of coke formation. Among the various Mn-promoted Ni/ γ -Al 2 O 3 catalysts, Mn/Ni/ γ -Al 2 O 3 showed the stable catalytic activity with the least amount of coke formation. It also exhibited a similar H 2 formation rate compared with Ni/ γ -Al 2 O 3 . Several characterization techniques—N 2 adsorption/desorption, X-ray diffraction (XRD), CO chemisorptions, temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and CHNS analysis—were employed to characterize the catalysts. The catalytic activity increased with increasing amount of chemisorbed CO for the Mn-promoted Ni/ γ -Al 2 O 3 catalysts. The highest proportion of Mn 4+ species was observed for the most stable catalyst.