Seo, Hyun Ook Sim, Jong Ki Kim, Kwang-Dae Kim, Young Dok Lim, Dong Chan Kim, Sang Hoon 2024-01-20T13:03:13Z 2024-01-20T13:03:13Z 2021-09-01 2013-01-31 0926-860X https://pubs.kist.re.kr/handle/201004/128430 TiO2-Ni inverse catalysts were prepared using an atomic layer deposition (ALD) process, and catalytic CO2 reforming of methane (CRM) reactions over the catalysts (either bare Ni or TiO2 coated-Ni particles) were performed using a continuous flow reactor at 800 degrees C. The TiO2-Ni inverse catalyst had a higher catalytic reactivity at the initial stage of the CRM reaction at 800 degrees C compared to that of bare Ni catalysts. Moreover, the high activity of the TiO2-Ni catalyst was maintained over 65 h of the CRM reaction at 800 degrees C, whereas deactivation of the bare Ni surface began within 1 h under the same conditions. Surface analysis using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy showed that deposition of graphitic carbon was effectively suppressed in the presence of TiO2 nanoparticles on the Ni surface, thereby improving the catalytic activity and stability of the TiO2-Ni catalytic system. We suggest that utilizing the decorative effect of oxide nanoparticles on the surface of metal catalyst has great potential for the development of metal-based catalysts with high stability and reactivity. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV NICKEL BIMETALLIC CATALYSTS TITANIA-SUPPORTED COBALT CO OXIDATION CH4 CO/TIO2 NANOPARTICLES DEPOSITION BEHAVIOR PT/ZRO2 SYNGAS Carbon dioxide reforming of methane to synthesis gas over a TiO2-Ni inverse catalyst Article 10.1016/j.apcata.2012.10.037 1 APPLIED CATALYSIS A-GENERAL, v.451, pp.43 - 49 APPLIED CATALYSIS A-GENERAL 451 43 49 scie scopus 000315069200007 2-s2.0-84873319992 Chemistry, Physical Environmental Sciences Chemistry Environmental Sciences & Ecology Article NICKEL BIMETALLIC CATALYSTS TITANIA-SUPPORTED COBALT CO OXIDATION CH4 CO/TIO2 NANOPARTICLES DEPOSITION BEHAVIOR PT/ZRO2 SYNGAS CO2 reforming of methane Hydrogen Ni Inverse catalyst TiO2