Effect of ion exchange by an organic cation on platinum immobilization on clays

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11 Citations (Scopus)

Abstract

Clay-supported platinum catalysts were prepared by ion exchange. The platinum precursor has been reduced either in the presence or in the absence of cinchonidinium cations introduced in the interlamellar space of the cationic clay. The samples were characterized by XRD and TEM. Reduction by NaBH4 in the absence of cinchonidinium cations and the subsequent introduction of this latter ensured the formation of monodispersed, small platinum crystallites immobilized mostly between the clay sheets. On the other hand, reduction in the presence of the organic cations resulted in migration of the platinum particles on the external surface of the clay.

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalReaction Kinetics and Catalysis Letters
Volume74
Issue number2
DOIs
Publication statusPublished - 2001

Fingerprint

Platinum
immobilization
clays
Cations
Ion exchange
Clay
platinum
Positive ions
cations
ions
Crystallites
crystallites
Transmission electron microscopy
catalysts
transmission electron microscopy
Catalysts
clay

Keywords

  • Cationic clay
  • Cinchonidinium cation
  • Ion exchange
  • Platinum

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

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abstract = "Clay-supported platinum catalysts were prepared by ion exchange. The platinum precursor has been reduced either in the presence or in the absence of cinchonidinium cations introduced in the interlamellar space of the cationic clay. The samples were characterized by XRD and TEM. Reduction by NaBH4 in the absence of cinchonidinium cations and the subsequent introduction of this latter ensured the formation of monodispersed, small platinum crystallites immobilized mostly between the clay sheets. On the other hand, reduction in the presence of the organic cations resulted in migration of the platinum particles on the external surface of the clay.",
keywords = "Cationic clay, Cinchonidinium cation, Ion exchange, Platinum",
author = "G. Sz{\"o}llősi and A. Mastalir and M. Bart{\'o}k",
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TY - JOUR

T1 - Effect of ion exchange by an organic cation on platinum immobilization on clays

AU - Szöllősi, G.

AU - Mastalir, A.

AU - Bartók, M.

PY - 2001

Y1 - 2001

N2 - Clay-supported platinum catalysts were prepared by ion exchange. The platinum precursor has been reduced either in the presence or in the absence of cinchonidinium cations introduced in the interlamellar space of the cationic clay. The samples were characterized by XRD and TEM. Reduction by NaBH4 in the absence of cinchonidinium cations and the subsequent introduction of this latter ensured the formation of monodispersed, small platinum crystallites immobilized mostly between the clay sheets. On the other hand, reduction in the presence of the organic cations resulted in migration of the platinum particles on the external surface of the clay.

AB - Clay-supported platinum catalysts were prepared by ion exchange. The platinum precursor has been reduced either in the presence or in the absence of cinchonidinium cations introduced in the interlamellar space of the cationic clay. The samples were characterized by XRD and TEM. Reduction by NaBH4 in the absence of cinchonidinium cations and the subsequent introduction of this latter ensured the formation of monodispersed, small platinum crystallites immobilized mostly between the clay sheets. On the other hand, reduction in the presence of the organic cations resulted in migration of the platinum particles on the external surface of the clay.

KW - Cationic clay

KW - Cinchonidinium cation

KW - Ion exchange

KW - Platinum

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