EuroPt-1 after various pretreatments. Structure, surface composition and catalytic activity in methycyclopentane reactions

Edit Fueloep, Volker Gnutzmann, Z. Paál, Walter Vogel

Research output: Contribution to journalArticle

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Abstract

At 6.3% Pt/SiO2 catalyst has been pretreated in hydrogen between 483 and 973 K and in air at 723 K. Particle size distribution of platinum after various treatments was monitored by XRD; its surface composition by XPS. The removal of surface carbon is complete in oxygen atmosphere only. These results are compared with the reaction of methycyclopentane (MCP) model compound after analogous pretreatments. Ring opening is the main reaction; its selectivity is rather sensitive to catalyst pretreatment. XRD shows that the reduction of platinum is complete in hydrogen and sintering occurs likely at the highest temperatures only. The effects in selectivity are attributed, therefore, to various levels of carbon impurity as well as to slight sintering. A possible metal-support boundary effect may only manifest itself on EuroPt-1 pretreated in oxygen.

Original languageEnglish
Pages (from-to)319-336
Number of pages18
JournalApplied Catalysis
Volume66
Issue number2
Publication statusPublished - Jan 1 1990

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Surface structure
Platinum
Catalyst activity
Sintering
Hydrogen
Catalysts
Carbon
Oxygen
Catalyst selectivity
Particle size analysis
X ray photoelectron spectroscopy
Impurities
Air
Metals
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

EuroPt-1 after various pretreatments. Structure, surface composition and catalytic activity in methycyclopentane reactions. / Fueloep, Edit; Gnutzmann, Volker; Paál, Z.; Vogel, Walter.

In: Applied Catalysis, Vol. 66, No. 2, 01.01.1990, p. 319-336.

Research output: Contribution to journalArticle

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