Kim, Ghun Sik Lee, Byung Yong Accardo, Grazia Ham, Hyung Chul Moon, Jooho Yoon, Sung Pil 2024-01-19T20:02:14Z 2024-01-19T20:02:14Z 2021-09-02 2019-05-31 0378-7753 https://pubs.kist.re.kr/handle/201004/119969 The catalytic partial oxidation of methane is evaluated over a Rh (2-15 mol%)-doped Sr0.92Y0.08TiO3-delta (SYT) perovskite-based catalyst prepared by the Pechini method for fuel-cell applications. The Rh dopant replaces titanium in the SYT catalyst, resulting in a catalyst with excellent and stable catalytic performance during thermal cycling in the temperature range 600-900 degrees C and in long-term stability tests at 750 degrees C for 130 h, without deactivation due to carbon coking or sintering. A systematic round-robin characterization is carried out by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and CO chemisorption to establish the chemical and physical properties of the catalyst. Adding Rh as a dopant in the catalyst significantly promotes the catalytic activity due to the presence of exsoluted rhodium particles on the catalyst surface. Small particles (2-5 nm) of Rh on the SYT surface are observed to be evenly dispersed, without agglomeration, and the turnover frequency (TOF) of the POM reaction increased. In the long-term stability tests, catalysts are tested in direct internal reforming at an SOFC anode, achieving high methane conversion (similar to 99%) in both dry and wet conditions. English ELSEVIER PARTIAL OXIDATION BIMETALLIC CATALYSTS HYDROGEN-PRODUCTION SYNTHESIS GAS METHANE ANODES SYNGAS CARBON TEMPERATURE COKING Improved catalytic activity under internal reforming solid oxide fuel cell over new rhodium-doped perovskite catalyst Article 10.1016/j.jpowsour.2019.03.082 1 JOURNAL OF POWER SOURCES, v.423, pp.305 - 315 JOURNAL OF POWER SOURCES 423 305 315 scie scopus 000466453700037 2-s2.0-85063376116 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article PARTIAL OXIDATION BIMETALLIC CATALYSTS HYDROGEN-PRODUCTION SYNTHESIS GAS METHANE ANODES SYNGAS CARBON TEMPERATURE COKING CPOM (catalytic partial oxidation of methane) Pechini method Perovskite catalyst Synthesis gas DIR (direct internal reforming) catalyst SOFC (solid oxide fuel cell) Rh-doped Sr0.92Y0.08TiO3-delta (SYT)