Choi, JS Kwon, HH Lim, TH Hong, SA Lee, HI 2024-01-21T06:31:52Z 2024-01-21T06:31:52Z 2021-09-04 2004-09-01 0920-5861 https://pubs.kist.re.kr/handle/201004/137244 As an effort to synthesize supported Ni reforming catalysts resistant to Li poisoning, which is essential in commercializing the direct internal reforming molten carbonate fuel cells (DIR-MCFC), a series of Ni catalysts supported on MgO-TiO2 composite oxides with varying ratio of Mg to Ti were prepared. Under the Li-free condition, the supported Ni reforming catalysts were active regardless of the ratio of Mg to Ti; however, when Li was introduced to the catalysts, the catalysts lost their activities with different degrees. Temperature-programmed reduction (TPR) and X-ray diffraction (XRD) results indicated that the addition of relatively small fraction of TiO2 into the NiO/MgO catalyst system was effective in obstructing the formation of NixMg1-xO solid solution and in increasing resistance to Li poisoning. The Ni catalysts supported on the composite oxides with Mg/Ti ratios of 2-7 turned out to be far more resistant to Li poisoning, showing approximately 60% of their original activities even under severe lithium carbonate condition, than the ones with other Mg/Ti ratios. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV INTERNAL REFORMING CATALYST DOPED NI/MGO CATALYSTS SOLID-SOLUTION FUEL-CELLS METHANE MECHANISM TRANSPORT OXIDATION SYSTEM SILICA Development of nickel catalyst supported on MgO-TiO2 composite oxide for DIR-MCFC Article 10.1016/j.cattod.2004.06.004 1 CATALYSIS TODAY, v.93-5, pp.553 - 560 CATALYSIS TODAY 93-5 553 560 scie scopus 000223973200078 2-s2.0-4344599721 Chemistry, Applied Chemistry, Physical Engineering, Chemical Chemistry Engineering Article; Proceedings Paper INTERNAL REFORMING CATALYST DOPED NI/MGO CATALYSTS SOLID-SOLUTION FUEL-CELLS METHANE MECHANISM TRANSPORT OXIDATION SYSTEM SILICA DIR-MCFC nickel catalyst MgO-TiO2 composite oxide metal-support interaction