Kim, Sung Ho Chung, Ji Hye Kim, Yun Tae Han, Jonghee Yoon, Sung Pil Nam, Suk-Woo Lim, Tae-Hoon Lee, Ho-In 2024-01-20T21:01:33Z 2024-01-20T21:01:33Z 2021-09-03 2009-08-15 0920-5861 https://pubs.kist.re.kr/handle/201004/132235 Autothermal reforming of methane, which is combined of steam reforming and partial oxidation, was carried out with a disk-type porous Ni-Cr bulk catalyst in various reaction conditions. Although high methane conversion could be obtained by controlling reaction conditions such as reaction temperature, O-2/C ratio, and S/C ratio, the optimal condition for maximal H-2 and CO generation was shown at a different reaction condition, because H-2 and CO were products of partially oxidized methane. The activity of porous Ni-Cr bulk catalyst was well maintained for On-Off test and 260 h operation of ATR. The deactivation of a reforming catalyst has generally been caused by the carbon deposition on the active site of Ni. In the case of bulk Ni, however, the oxidation of Ni was an inevitable and severe problem in the autothermal reforming of methane. An interesting fact was observed during On-Off test, which was named a bounce phenomenon in this work. It was caused by oxidation of Ni for On-Off process and the transient reduction of the oxidized Ni catalyst in ATR reaction. (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV WATER-GAS SHIFT CARBON DEPOSITION NICKEL-CATALYSTS SOLID-SOLUTION CO REACTOR OXIDATION SYNGAS Disk-type porous Ni-Cr bulk catalyst for hydrogen production by autothermal reforming of methane Article 10.1016/j.cattod.2009.01.042 1 CATALYSIS TODAY, v.146, no.1-2, pp.96 - 102 CATALYSIS TODAY 146 1-2 96 102 scie scopus 000269659000017 2-s2.0-67849088707 Chemistry, Applied Chemistry, Physical Engineering, Chemical Chemistry Engineering Article; Proceedings Paper WATER-GAS SHIFT CARBON DEPOSITION NICKEL-CATALYSTS SOLID-SOLUTION CO REACTOR OXIDATION SYNGAS Disk-type catalyst Ni bulk catalyst ATR Methane reforming On-Off test