Preparation, characterization and application of platinum catalysts immobilized on clays

Research output: Article

10 Citations (Scopus)

Abstract

Clay-supported platinum catalysts were prepared by ion-exchange using cationic clays. The immobilized platinum cations were reduced by applying liquid- or gas-phase reduction procedures. The catalysts obtained were examined by X-ray diffractometry, and the results were compared with the diffractograms of the parent clays and that of a catalyst prepared by impregnation. The modifications in the diffractograms were used to estimate the fraction of metal migrated from the interlamellar space on the outer surface of the clay lamellae. The reaction rates and selectivities obtained in the hydrogenation of cinnamaldehyde and crotonaldehyde over these catalysts supported our interpretation related to the position of the metal particles.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalSolid State Ionics
Volume141-142
DOIs
Publication statusPublished - máj. 1 2001

Fingerprint

Platinum
clays
Clay
platinum
catalysts
preparation
Catalysts
2-butenal
Metals
Catalyst selectivity
metal particles
lamella
Catalyst supports
Impregnation
X ray diffraction analysis
Hydrogenation
hydrogenation
Reaction rates
Cations
Ion exchange

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

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title = "Preparation, characterization and application of platinum catalysts immobilized on clays",
abstract = "Clay-supported platinum catalysts were prepared by ion-exchange using cationic clays. The immobilized platinum cations were reduced by applying liquid- or gas-phase reduction procedures. The catalysts obtained were examined by X-ray diffractometry, and the results were compared with the diffractograms of the parent clays and that of a catalyst prepared by impregnation. The modifications in the diffractograms were used to estimate the fraction of metal migrated from the interlamellar space on the outer surface of the clay lamellae. The reaction rates and selectivities obtained in the hydrogenation of cinnamaldehyde and crotonaldehyde over these catalysts supported our interpretation related to the position of the metal particles.",
keywords = "α,β-unsaturated aldehydes, Cationic clays, Hydrogenation, Ion-exchange, Platinum, X-ray diffractometry",
author = "G. Sz{\"o}llősi and Istv{\'a}n Kun and A. Mastalir and M. Bart{\'o}k and I. D{\'e}k{\'a}ny",
year = "2001",
month = "5",
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doi = "10.1016/S0167-2738(01)00761-5",
language = "English",
volume = "141-142",
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journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",

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TY - JOUR

T1 - Preparation, characterization and application of platinum catalysts immobilized on clays

AU - Szöllősi, G.

AU - Kun, István

AU - Mastalir, A.

AU - Bartók, M.

AU - Dékány, I.

PY - 2001/5/1

Y1 - 2001/5/1

N2 - Clay-supported platinum catalysts were prepared by ion-exchange using cationic clays. The immobilized platinum cations were reduced by applying liquid- or gas-phase reduction procedures. The catalysts obtained were examined by X-ray diffractometry, and the results were compared with the diffractograms of the parent clays and that of a catalyst prepared by impregnation. The modifications in the diffractograms were used to estimate the fraction of metal migrated from the interlamellar space on the outer surface of the clay lamellae. The reaction rates and selectivities obtained in the hydrogenation of cinnamaldehyde and crotonaldehyde over these catalysts supported our interpretation related to the position of the metal particles.

AB - Clay-supported platinum catalysts were prepared by ion-exchange using cationic clays. The immobilized platinum cations were reduced by applying liquid- or gas-phase reduction procedures. The catalysts obtained were examined by X-ray diffractometry, and the results were compared with the diffractograms of the parent clays and that of a catalyst prepared by impregnation. The modifications in the diffractograms were used to estimate the fraction of metal migrated from the interlamellar space on the outer surface of the clay lamellae. The reaction rates and selectivities obtained in the hydrogenation of cinnamaldehyde and crotonaldehyde over these catalysts supported our interpretation related to the position of the metal particles.

KW - α,β-unsaturated aldehydes

KW - Cationic clays

KW - Hydrogenation

KW - Ion-exchange

KW - Platinum

KW - X-ray diffractometry

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JO - Solid State Ionics

JF - Solid State Ionics

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