Controlling metal particle size in preparation of Pd/SiO2 catalysts

L. Guczi, A. Horváth, A. Beck, Antal Sáryány

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Palladium nanoparticles have been fabricated on Aerosil 200 support using (i) "Controlled Colloidal Synthesis", (ii) PDDA stabilized Pd sol (both liquid phase reduction with ethanol) and (iii) incipient wetness method (as reference). Oxidation/reduction treatment was employed to remove the carbonaceous impurities from the samples during which no change in the particle size was experienced. However, the turnover frequency referred to Pd surface exposed significantly changed and FTIR technique was used to monitor the alteration of Pd surface by means of CO chemisorption. It turned out that after treatment the distribution of the overlapping stretching band system of the prevailing bridge CO forms was changed indicating either a change in the face orientation of Pd crystallites, or formation of clean Pd faces in oxidation/reduction process.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalStudies in Surface Science and Catalysis
Volume145
Publication statusPublished - 2002

Fingerprint

metal particles
Carbon Monoxide
Metals
Particle size
catalysts
preparation
Catalysts
Palladium
Polymethyl Methacrylate
Chemisorption
Sols
Crystallites
Silicon Dioxide
Crystal orientation
Stretching
oxidation
Ethanol
Impurities
Nanoparticles
chemisorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Controlling metal particle size in preparation of Pd/SiO2 catalysts. / Guczi, L.; Horváth, A.; Beck, A.; Sáryány, Antal.

In: Studies in Surface Science and Catalysis, Vol. 145, 2002, p. 351-354.

Research output: Contribution to journalArticle

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