Suppression of carbon formation in steam reforming of methane by addition of Co into Ni/ZrO2 catalysts

We investigated the steam reforming of methane (SRM) over various NiCo bimetallic catalysts supported on ZrO 2 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 und...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2010, 27(2), 125, pp.480-486
Main Authors: Harshini, Dasika, Kwon, Yongchai, Han, Jonghee, Yoon, Sung Pil, Nam, Suk Woo, Lim, Tae-Hoon
Format: Article
Language:English
Subjects:
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Energy
Industrial Chemistry/Chemical Engineering
Materials Science
화학공학
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Summary:We investigated the steam reforming of methane (SRM) over various NiCo bimetallic catalysts supported on ZrO 2 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 Ni- to-Co ratio of 50: 50 supported on ZrO 2 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.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-010-0095-9