Effect of MnOx in the catalytic stabilization of Co2MnO4 spinel during the ethanol steam reforming reaction

Title
Effect of MnOx in the catalytic stabilization of Co2MnO4 spinel during the ethanol steam reforming reaction
Author(s)
강미숙곽병섭이가영박선민[박선민]
Keywords
HYDROTALCITE-LIKE PRECURSORS; SUPPORTED COBALT CATALYSTS; HYDROGEN-PRODUCTION; NI/AL2O3 CATALYSTS; CO INTERACTION; STABILITY; METHANE; AL; DECOMPOSITION; PERFORMANCE
Issue Date
201508
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS A-GENERAL, v.503, pp.165 - 175
Abstract
Co-based spinel-structured Co2MnO4 was assessed as a catalyst for the ethanol steam reforming reaction. Ethanol conversion over spinet-structured Co2MnO4/SBA-15 was comparable to that over CoxOy/SBA-15 and CoxOy/MnxOy/SBA-15 after a reduction treatment. The spinel structure of Co2MnO4 exhibited extremely stable performance until 71 h, whereas the catalytic activities of the CoxOy/SBA-15 and CoxOy/MnxOy/SBA-15 were reduced by carbon deposition involving different reforming mechanisms. The catalytic stability for the reforming reaction was closely related to the stability of the cobalt oxidation states through the assistance of manganese oxides and its spinet structure. The Co2MnO4/SBA-15 exhibited the highest activity for the reforming reaction at 700 degrees C. Cobalt in the spinel structure of Co2MnO4 is believed to make a major contribution to the absolute catalytic activity because there is little or no catalytic deactivation induced by aggregation between their particles compared to the impregnated cobalt ingredients. On the other hand, manganese oxide in the spinel structure of Co2MnO4 was suggested to provide oxygen to the cobalt catalytic active sites, resulting in increases in hydrogen production and the suppression of CO generation. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31395http://dx.doi.org/10.1016/j.apcata.2015.06.037
ISSN
0926-860X
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > 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