skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Evidence of alloy formation during the activation of graphite-supported palladium-cobalt catalysts

Abstract

Magnetism, XRD, and EXAFS analyses were used to study the formation of a solid solution on Pd-Co/G catalysts during reduction treatment. After reduction at 773 K, magnetic measurements revealed the formation of a Pd-Co alloy. XRD analysis in situ allowed one to follow the alloy process during the increase of the reduction temperature. The XRD results showed the presence of a heterogeneous solid solution after reduction at 773 K. Pd and Co K-edge EXAFS analysis confirmed that bimetallic particles with a palladium- and cobalt-rich phase were formed. The formation of a solid solution decreased the adsorption strength of 1,3-butadiene on new Pd sites modified by Co. Palladium-cobalt catalysts are useful for methanol and ethanol formation from synthesis gas at high pressure.

Authors:
;  [1];  [2]; ;  [3]
  1. Univ. Federal do Rio de Janeiro (Brazil)
  2. CNRS, Villeurbanne (France). Lab. d`Application de la Chimie a l`Environnement
  3. CNRS, Villeurbanne (France). Inst. de Recherches sur la Catalyse
Publication Date:
OSTI Identifier:
687724
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 186; Journal Issue: 1; Other Information: PBD: 15 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 10 SYNTHETIC FUELS; PALLADIUM; COBALT; CHEMICAL ACTIVATION; REDUCTION; PALLADIUM ALLOYS; COBALT ALLOYS; SYNTHESIS GAS; METHANOL; SYNTHESIS

Citation Formats

Noronha, F B, Schmal, M, Frety, R, Bergeret, G, and Moraweck, B. Evidence of alloy formation during the activation of graphite-supported palladium-cobalt catalysts. United States: N. p., 1999. Web. doi:10.1006/jcat.1999.2461.
Noronha, F B, Schmal, M, Frety, R, Bergeret, G, & Moraweck, B. Evidence of alloy formation during the activation of graphite-supported palladium-cobalt catalysts. United States. https://doi.org/10.1006/jcat.1999.2461
Noronha, F B, Schmal, M, Frety, R, Bergeret, G, and Moraweck, B. 1999. "Evidence of alloy formation during the activation of graphite-supported palladium-cobalt catalysts". United States. https://doi.org/10.1006/jcat.1999.2461.
@article{osti_687724,
title = {Evidence of alloy formation during the activation of graphite-supported palladium-cobalt catalysts},
author = {Noronha, F B and Schmal, M and Frety, R and Bergeret, G and Moraweck, B},
abstractNote = {Magnetism, XRD, and EXAFS analyses were used to study the formation of a solid solution on Pd-Co/G catalysts during reduction treatment. After reduction at 773 K, magnetic measurements revealed the formation of a Pd-Co alloy. XRD analysis in situ allowed one to follow the alloy process during the increase of the reduction temperature. The XRD results showed the presence of a heterogeneous solid solution after reduction at 773 K. Pd and Co K-edge EXAFS analysis confirmed that bimetallic particles with a palladium- and cobalt-rich phase were formed. The formation of a solid solution decreased the adsorption strength of 1,3-butadiene on new Pd sites modified by Co. Palladium-cobalt catalysts are useful for methanol and ethanol formation from synthesis gas at high pressure.},
doi = {10.1006/jcat.1999.2461},
url = {https://www.osti.gov/biblio/687724}, journal = {Journal of Catalysis},
number = 1,
volume = 186,
place = {United States},
year = {Sun Aug 15 00:00:00 EDT 1999},
month = {Sun Aug 15 00:00:00 EDT 1999}
}