English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The effects of La2O3 on the structural properties of La2O3–Al2O3 prepared by the sol–gel method and on the catalytic performance of Pt/La2O3–Al2O3 towards steam reforming and partial oxidation of methane

Araujo, J., Zanchet, D., Rinaldi, R., Schuchardt, U., Hori, C., Fierro, J., et al. (2008). The effects of La2O3 on the structural properties of La2O3–Al2O3 prepared by the sol–gel method and on the catalytic performance of Pt/La2O3–Al2O3 towards steam reforming and partial oxidation of methane. Applied Catalysis B: Environmental, 84(3-4), 552-562. doi:10.1016/j.apcatb.2008.05.011.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Araujo, J.C.S.1, Author
Zanchet, D.2, Author
Rinaldi, Roberto3, 4, Author              
Schuchardt, U.4, Author
Hori, C.E.5, Author
Fierro, J.L.G.6, Author
Bueno, J.M.C.1, Author
Affiliations:
1Departament of Chemical Engineering, Universidade Federal de São Carlos, C.P. 676, 13565-905 São Carlos, SP, Brazil, ou_persistent22              
2Laboratório Nacional de Luz Síncrotron, LNLS, C.P. 6192, 13083-970 Campinas, SP, Brazil, ou_persistent22              
3Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445617              
4Institute of Chemistry, Universidade Estadual de Campinas, 13083-970 Campinas, SP, Brazil, ou_persistent22              
5FEQ, Universidade Federal de Uberlândia, Av. Joao Naves de Ávila 2121, Campus Santa Monica, Bloco 1K, 38400-902 Uberlândia, MG, Brazil, ou_persistent22              
6Institute of Catalysis and Petrochemistry, CSIC, Cantoblanco, 28049 Madrid, Spain, ou_persistent22              

Content

show
hide
Free keywords: Sol–gel; Lanthanum oxide; Platinum on alumina; CO adsorption; Steam reforming of methane; Partial oxidation of methane
 Abstract: The effect of La2O3 content on the structural properties and catalytic behavior of Pt/xLa2O3–Al2O3 catalysts in steam reforming of methane and partial oxidation of methane was investigated. There was a decrease in the density of Pt sites with the increase of La2O3 loadings according to Fourier transform infrared spectroscopy of adsorbed CO and to dehydrogenation of cyclohexane results. However, transmission electron microscopy data indicates an opposite trend. This apparent disagreement could be due to the CH4 turnover rates and specific rates of steam reforming of methane increased for higher La2O3 loadings. The Pt/Al2O3 catalyst was strongly deactivated during partial oxidation of methane, while La2O3-containing catalysts exhibited higher stability. The increase of activity observed during the reactions was ascribed to the ability of the [LaPtxO]Pt0-like species to promote the gasification of coke. This cleaning mechanism led to higher accessibility of the active sites to CH4.

Details

show
hide
Language(s): eng - English
 Dates: 2008-12-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.apcatb.2008.05.011
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Applied Catalysis B: Environmental
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 84 (3-4) Sequence Number: - Start / End Page: 552 - 562 Identifier: ISSN: 0926-3373
CoNE: https://pure.mpg.de/cone/journals/resource/954928540173