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Hydrogen production from butane steam reforming over Ni/Ag loaded MgAl2O4 catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
47502 46473 2010 10 PDF Available
Title
Hydrogen production from butane steam reforming over Ni/Ag loaded MgAl2O4 catalyst
Abstract

The intensive coke deposition and reforming at high temperature that occur in the case of the conventional Ni/γ-Al2O4 catalyst lead to rapid catalytic deactivation and reduced H2 production from the hydrocarbon steam-reforming reaction. We used the impregnation approach to synthesize MgO (30 wt%) Al2O4 catalysts loaded with bimetallic Ni(15 mol%)/Ag(15 mol%) or Ag/Ni and studied the steam reforming reactions of butane over these catalysts. The Ag-loaded catalyst exhibited significantly higher reforming reactivity compared to the conventional Ni/MgAl2O4 catalyst. The main products from steam reforming over the Ni/MgAl2O4 catalyst without the Ag component were H2, CO, CO2, and CH4, with a small amount of C2 ∼ hydrocarbons. However, the addition of Ag reduced the degree of carbon deposition and improved the H2 product selectivity by eliminating the formation of C2 ∼ hydrocarbons at temperatures below 750 °C. The catalytic performances differed according to the order in which the added metal precursors were impregnated in each step. The H2 production was maximized at 68% over Ni(9)/Ag(1)/MgAl2O4 at 700 °C for 1 h and this high performance continued for up to 53 h.

Keywords
Hydrogen production; Butane steam-reforming reaction; Ag/Ni-loaded MgAl2O4; Ni/Ag-loaded MgAl2O4
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Hydrogen production from butane steam reforming over Ni/Ag loaded MgAl2O4 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 95, Issues 3–4, 6 April 2010, Pages 446–455
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