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6067045 
Journal Article 
Synthesis and characterization of mesoporous alumina with nickel incorporated for use in the partial oxidation of methane into synthesis gas 
Kim, P; Kim, Y; Kim, H; Song, IK; Yi, J 
2004 
1 
Applied Catalysis A: General
ISSN: 0926-860X
EISSN: 1873-3875 
Elsevier 
272 
1-2 
157-166 
WOS:000223592700018 
Mesoporous alumina catalysts that incorporate nickel (Ni-Alumina) with different Ni/Al molar ratios of 1:2, 1:5 and 1:10 were synthesized by a one-step sol–gel method using lauric acid as a template. The prepared Ni-Alumina catalysts showed a relatively high surface area with a narrow pore size distribution after calcination at 700°C; these effects were independent of the Ni/Al molar ratio. Although weak interactions between nickel oxide and alumina were observed in the Ni-Alumina catalysts with increasing the amounts of nickel precursor, nickel catalysts finely dispersed on an alumina support were obtained in all cases. The Ni-Alumina catalysts were found to be highly active in the partial oxidation of methane. For the purposes of comparison, a nickel catalyst impregnated on a commercially available alumina support was prepared (Ni-IMP). Various characterization results showed that the 1:10 Ni-Alumina catalyst had stronger metal-support interactions and a more favorable catalyst structure for obtaining finely dispersed nickel particles, compared to the Ni-IMP catalyst. The deactivation of catalysts examined in this work was not due to catalyst sintering, but mainly to the carbon deposition. The Ni-Alumina catalyst having smaller nickel particles and lower levels of carbon deposition had a more stable catalytic activity than the Ni-IMP catalyst. 
nickel catalyst; incorporation; mesoporous alumina; metal-support interaction; partial oxidation of methane; synthesis gas