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Preparation of structured catalysts with Ni and Ni–Rh/CeO2 catalytic layers for syngas production by biogas reforming processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
53217 46955 2016 9 PDF Available
Title
Preparation of structured catalysts with Ni and Ni–Rh/CeO2 catalytic layers for syngas production by biogas reforming processes
Abstract

•Synthesis of Ni/CeO2 and Ni–Rh/CeO2 nanopowders by solution combustion method.•Deposition on monolith and foam by support dip-coating into acid-free catalyst dispersion.•Catalytic activity towards steam reforming and oxy-steam reforming of biogas.•Slightly higher performance of NiRh-based catalyst compared to Ni-based sample.•Higher activity of foam systems compared to honeycomb structured catalysts.

Ni(7.5 wt.%)/CeO2 and Ni(7.5 wt.%)-Rh(0.5 wt.%)/CeO2 powders (previously prepared by solution combustion synthesis) were washcoated on cordierite monolith and alumina open-cell foam by means of support dip-coating into acid-free catalyst dispersion. Catalytic performances toward the steam reforming (SR) and the oxy-steam reforming (OSR) of biogas were investigated and compared at different temperatures (700–800 °C) and weight space velocities (WSV = 70,000–350,000 Nml gcat−1 h−1). Coating load was controlled by multiple depositions; homogeneous and well adherent layers were found. Catalytic tests demonstrated superior performances of the bimetallic samples (Ni–Rh/CeO2) compared to the monometallic one (Ni/CeO2), especially at high space velocity. At the same time, foam showed better performances with respect to the monolithic support toward the SR and OSR processes.

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Keywords
Structured supports; Monoliths; Foams; Washcoating; Steam reforming; Oxy-steam reforming; Nickel; Rhodium; Bimetallic catalyst
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Preparation of structured catalysts with Ni and Ni–Rh/CeO2 catalytic layers for syngas production by biogas reforming processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 273, 15 September 2016, Pages 3–11
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us