Suppression of carbon formation in steam reforming of methane by addition of Co into Ni/ZrO2 catalysts
- Suppression of carbon formation in steam reforming of methane by addition of Co into Ni/ZrO2 catalysts
- 하씨니; 권용채; 한종희; 윤성필; 남석우; 임태훈
- Methane; Steam Reforming; Bimetallic NiCo Alloy Catalysts
- Issue Date
- The Korean journal of chemical engineering
- VOL 27, NO 2, 480-486
- We investigated the steam reforming of methane (SRM) over various NiCo bimetallic catalysts supported
on ZrO2 to determine whether the addition of Co on the Ni catalyst suppressed carbon formation. The effect of metal
loading on SRM reaction was evaluated in a downflow tubular fixed-bed reactor under various steam-to-carbon (S/
C) ratios and temperatures. For monitoring changes in the catalysts before and after the SRM reactions, several techniques
(BET, XRD, TEM, and CHN analysis) were used. The effects of reaction temperature, gas hourly space velocity
(GHSV), and molar S/C ratios were studied in detail over the various catalyst combinations. It was found that an Nito-
Co ratio of 50 : 50 supported on ZrO2 provided the best catalytic activity, along with an absence of coking, when
operated at a temperature of 1,073 K, a GHSV of 24 L g−1 h−1, and an S/C ratio of 3 : 1.
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