Abstract
Rh doped Ni and Co catalysts, Rh-M/CeO2(20 wt %)-Al 2O3 (0.2 wt % of Rh; M = Ni or Co, 20 wt %) were synthesized to produce hydrogen via autothermal reforming (ATR) of commercial gasoline at 700 oC under the conditions of a S/C ratio of 2.0, an O/C ratio of 0.84, and a gas hourly space velocity (GHSV) of 20,000 h-1. The Rh-Ni/CeO 2(20 wt %)-Al2O3 catalyst (1) exhibited excellent activities, with H2 and (H2+CO) yields of 2.04 and 2.58 mol/mol C, respectively. In addition, this catalyst proved to be highly stable over 100 h without catalyst deactivation, as evidenced by energy dispersive spectroscopy (EDX) and elemental analyses. Compared to 1, Rh-Co/CeO2(20 wt %)-Al2O3 catalyst (2) exhibited relatively low stability, and its activity decreased after 57 h. In line with this observation, elemental analyses confirmed that nearly no carbon species were formed at 1 while carbon deposits (10 wt %) were found at 2 following the reaction, which suggests that carbon coking is the main process for catalyst deactivation.
Original language | English |
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Pages (from-to) | 231-235 |
Number of pages | 5 |
Journal | Bulletin of the Korean Chemical Society |
Volume | 35 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2014 Jan 20 |
Keywords
- Autothermal reforming
- Bimetallic catalyst
- Carbon coking
- CeO-Al O Gasoline
ASJC Scopus subject areas
- Chemistry(all)