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

Title
Hydrogen production from butane steam reforming over Ni/Ag loaded MgAl2O4 catalyst
Author(s)
강미숙정하림[정하림]
Keywords
PT-NI CATALYSTS; CARBON-DIOXIDE; NICKEL-CATALYSTS; SUPPORTED NI; METHANE; DEACTIVATION; HYDROCARBONS; CONVERSION; OXIDATION; PD/CERIA
Issue Date
201003
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS B-ENVIRONMENTAL, v.95, no.3-4, pp.446 - 455
Abstract
The intensive coke deposition and reforming at high temperature that occur in the case of the conventional Ni/gamma-Al2O4 catalyst lead to rapid catalytic deactivation and reduced H-2 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 H-2, CO, CO2, and CH4, with a small amount of C-2 similar to hydrocarbons. However, the addition of Ag reduced the degree of carbon deposition and improved the H-2 product selectivity by eliminating the formation of C-2 similar to hydrocarbons at temperatures below 750 degrees C. The catalytic performances differed according to the order in which the added metal precursors were impregnated in each step. The H-2 production was maximized at 68% over Ni(9)/Ag(1)/MgAl2O4 at 700 degrees C for 1 h and this high performance continued for up to 53 h. (C) 2010 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/22781http://dx.doi.org/10.1016/j.apcatb.2010.01.026
ISSN
0926-3373
Appears in Collections:
이과대학 > 화학생화학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE