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Catalytic stability of Ni3Al powder for methane steam reforming

Paper ID Volume ID Publish Year Pages File Format Full-Text
48347 46503 2008 9 PDF Available
Title
Catalytic stability of Ni3Al powder for methane steam reforming
Abstract

We previously found catalytic activity for methane steam reforming in atomized Ni3Al powder which was pretreated by acid and subsequent alkali leaching. In this study the catalytic stability of the pretreated Ni3Al powder was investigated by isothermal test in the temperature range of 873–1173 K for 10 h. The activity was relatively stable over time at low temperatures below 973 K, especially at 873 K, where it retained the initial activity even after 10 h. However, it rapidly decreased with time at temperatures above 1073 K. Fine Ni particles, which were produced on the outer surface of Ni3Al powder during the pretreatment and served as a catalyst, survived on the surface after tests at all the temperatures. They remained almost unchanged below 973 K, leading to the good stability, while sintering and oxidation occurred at high temperatures, leading to the rapid deactivation.

Keywords
Hydrogen production; Ni3Al; Stability; Methane steam reforming
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Catalytic stability of Ni3Al powder for methane steam reforming
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 80, Issues 1–2, 15 April 2008, Pages 15–23
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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