Metal-support effects and catalytic properties of platinum supported on zinc aluminate

G. Aguilar-Ríos; M. A. Valenzuela; H. Armendariz; P. Salas; J. M. Domínguez; D. R. Acosta; I. Schifter

doi:10.1016/0926-860X(92)80245-8

Metal-support effects and catalytic properties of platinum supported on zinc aluminate

G. Aguilar-Ríos, M. A. Valenzuela, H. Armendariz, P. Salas, J. M. Domínguez, D. R. Acosta, I. Schifter

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Pt/ZnAl₂O₄ catalysts with platinum contents ranging from 0.1 to 1.17 wt.-% were characterized by temperature-programmed reduction, hydrogen chemisorption, high resolution transmission electron microscopy, electron energy loss spectroscopy and tested for isobutane dehydrogenation, using helium or hydrogen as reaction media. For low metal contents, the results suggest that platinum diffuses into the oxygen vacancies in the spinel lattice while at higher loadings, metal-metal interactions are dominant, leading to particle formation. The catalytic behaviour points to the necessity of strong Pt-H interactions to preserve activity.

Original language	English
Pages (from-to)	25-34
Number of pages	10
Journal	Applied Catalysis A: General
Volume	90
Issue number	1
DOIs	https://doi.org/10.1016/0926-860X(92)80245-8
State	Published - 21 Oct 1992
Externally published	Yes

Keywords

EELS
HRTEM
XRD)
characterization (TPR
dehydrogenation
platinum
support effects.
zinc aluminate spinel

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title = "Metal-support effects and catalytic properties of platinum supported on zinc aluminate",

abstract = "Pt/ZnAl2O4 catalysts with platinum contents ranging from 0.1 to 1.17 wt.-% were characterized by temperature-programmed reduction, hydrogen chemisorption, high resolution transmission electron microscopy, electron energy loss spectroscopy and tested for isobutane dehydrogenation, using helium or hydrogen as reaction media. For low metal contents, the results suggest that platinum diffuses into the oxygen vacancies in the spinel lattice while at higher loadings, metal-metal interactions are dominant, leading to particle formation. The catalytic behaviour points to the necessity of strong Pt-H interactions to preserve activity.",

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T1 - Metal-support effects and catalytic properties of platinum supported on zinc aluminate

AU - Aguilar-Ríos, G.

AU - Valenzuela, M. A.

AU - Armendariz, H.

AU - Salas, P.

AU - Domínguez, J. M.

AU - Acosta, D. R.

AU - Schifter, I.

PY - 1992/10/21

Y1 - 1992/10/21

N2 - Pt/ZnAl2O4 catalysts with platinum contents ranging from 0.1 to 1.17 wt.-% were characterized by temperature-programmed reduction, hydrogen chemisorption, high resolution transmission electron microscopy, electron energy loss spectroscopy and tested for isobutane dehydrogenation, using helium or hydrogen as reaction media. For low metal contents, the results suggest that platinum diffuses into the oxygen vacancies in the spinel lattice while at higher loadings, metal-metal interactions are dominant, leading to particle formation. The catalytic behaviour points to the necessity of strong Pt-H interactions to preserve activity.

AB - Pt/ZnAl2O4 catalysts with platinum contents ranging from 0.1 to 1.17 wt.-% were characterized by temperature-programmed reduction, hydrogen chemisorption, high resolution transmission electron microscopy, electron energy loss spectroscopy and tested for isobutane dehydrogenation, using helium or hydrogen as reaction media. For low metal contents, the results suggest that platinum diffuses into the oxygen vacancies in the spinel lattice while at higher loadings, metal-metal interactions are dominant, leading to particle formation. The catalytic behaviour points to the necessity of strong Pt-H interactions to preserve activity.

KW - EELS

KW - HRTEM

KW - XRD)

KW - characterization (TPR

KW - dehydrogenation

KW - platinum

KW - support effects.

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JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

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Metal-support effects and catalytic properties of platinum supported on zinc aluminate

Abstract

Keywords

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