Ethylcyclopentane ring opening reaction over PtGe/Al2O 3 catalysts prepared by controlled surface reaction

A. Serge Ello, L. Pirault-Roy, A. Wootsch, Z. Paál

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Platinum catalysts supported on non-acidic Pt/Al2O3 materials have been prepared in addition Ge amounts corresponding nominally to 1/8; (Ge1/8;);1/2 (Ge1/2); 1(Ge1) and 2 (Ge2) monolayers by controlled surface reaction of Ge(n-C4H9)4. These catalysts were characterized by electron microscopy (TEM), FTIR of CO and H2 chemisorption and ethylcyclopentane ring opening test has been done. This reaction test gives selective or non selective ring opening products. Bimetallic catalysts PtGe1ZAl2O3 and PtGe2/Al 2O3 have lead to a non selective hydrogenolyse similar to platinum monometallic catalyst Pt/Al2O3. In the case of PtGe1/Al2O3 catalyst, we observed a good agreement with statistic values at low temperature but it evolved differently comparatively to Pt/Al2O3 catalyst when temperature enhanced. The difference of products selectivity has been explained by the resistance of the active sites to disturbance of the temperature when adding small amount in comparison with high amount of germanium.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalPhysical and Chemical News
Volume47
Publication statusPublished - 2009

Fingerprint

Surface reactions
Catalyst
surface reactions
Ring
catalysts
Catalysts
rings
Platinum
Germanium
platinum
Hydrogenolysis
hydrogenolysis
Carbon Monoxide
Chemisorption
Catalyst supports
Electron Microscopy
Temperature
Electron microscopy
products
Selectivity

Keywords

  • Ethylcyclopentane ring opening
  • Organometallic grafting
  • Pt
  • Pt-Ge catalysts

ASJC Scopus subject areas

  • Chemistry(all)
  • Physics and Astronomy(all)
  • Mathematical Physics

Cite this

Ethylcyclopentane ring opening reaction over PtGe/Al2O 3 catalysts prepared by controlled surface reaction. / Serge Ello, A.; Pirault-Roy, L.; Wootsch, A.; Paál, Z.

In: Physical and Chemical News, Vol. 47, 2009, p. 103-109.

Research output: Contribution to journalArticle

@article{3a262b0053b946a6ba5384ab1adc1455,
title = "Ethylcyclopentane ring opening reaction over PtGe/Al2O 3 catalysts prepared by controlled surface reaction",
abstract = "Platinum catalysts supported on non-acidic Pt/Al2O3 materials have been prepared in addition Ge amounts corresponding nominally to 1/8; (Ge1/8;);1/2 (Ge1/2); 1(Ge1) and 2 (Ge2) monolayers by controlled surface reaction of Ge(n-C4H9)4. These catalysts were characterized by electron microscopy (TEM), FTIR of CO and H2 chemisorption and ethylcyclopentane ring opening test has been done. This reaction test gives selective or non selective ring opening products. Bimetallic catalysts PtGe1ZAl2O3 and PtGe2/Al 2O3 have lead to a non selective hydrogenolyse similar to platinum monometallic catalyst Pt/Al2O3. In the case of PtGe1/Al2O3 catalyst, we observed a good agreement with statistic values at low temperature but it evolved differently comparatively to Pt/Al2O3 catalyst when temperature enhanced. The difference of products selectivity has been explained by the resistance of the active sites to disturbance of the temperature when adding small amount in comparison with high amount of germanium.",
keywords = "Ethylcyclopentane ring opening, Organometallic grafting, Pt, Pt-Ge catalysts",
author = "{Serge Ello}, A. and L. Pirault-Roy and A. Wootsch and Z. Pa{\'a}l",
year = "2009",
language = "English",
volume = "47",
pages = "103--109",
journal = "Physical and Chemical News",
issn = "1114-3800",
publisher = "Best Edition",

}

TY - JOUR

T1 - Ethylcyclopentane ring opening reaction over PtGe/Al2O 3 catalysts prepared by controlled surface reaction

AU - Serge Ello, A.

AU - Pirault-Roy, L.

AU - Wootsch, A.

AU - Paál, Z.

PY - 2009

Y1 - 2009

N2 - Platinum catalysts supported on non-acidic Pt/Al2O3 materials have been prepared in addition Ge amounts corresponding nominally to 1/8; (Ge1/8;);1/2 (Ge1/2); 1(Ge1) and 2 (Ge2) monolayers by controlled surface reaction of Ge(n-C4H9)4. These catalysts were characterized by electron microscopy (TEM), FTIR of CO and H2 chemisorption and ethylcyclopentane ring opening test has been done. This reaction test gives selective or non selective ring opening products. Bimetallic catalysts PtGe1ZAl2O3 and PtGe2/Al 2O3 have lead to a non selective hydrogenolyse similar to platinum monometallic catalyst Pt/Al2O3. In the case of PtGe1/Al2O3 catalyst, we observed a good agreement with statistic values at low temperature but it evolved differently comparatively to Pt/Al2O3 catalyst when temperature enhanced. The difference of products selectivity has been explained by the resistance of the active sites to disturbance of the temperature when adding small amount in comparison with high amount of germanium.

AB - Platinum catalysts supported on non-acidic Pt/Al2O3 materials have been prepared in addition Ge amounts corresponding nominally to 1/8; (Ge1/8;);1/2 (Ge1/2); 1(Ge1) and 2 (Ge2) monolayers by controlled surface reaction of Ge(n-C4H9)4. These catalysts were characterized by electron microscopy (TEM), FTIR of CO and H2 chemisorption and ethylcyclopentane ring opening test has been done. This reaction test gives selective or non selective ring opening products. Bimetallic catalysts PtGe1ZAl2O3 and PtGe2/Al 2O3 have lead to a non selective hydrogenolyse similar to platinum monometallic catalyst Pt/Al2O3. In the case of PtGe1/Al2O3 catalyst, we observed a good agreement with statistic values at low temperature but it evolved differently comparatively to Pt/Al2O3 catalyst when temperature enhanced. The difference of products selectivity has been explained by the resistance of the active sites to disturbance of the temperature when adding small amount in comparison with high amount of germanium.

KW - Ethylcyclopentane ring opening

KW - Organometallic grafting

KW - Pt

KW - Pt-Ge catalysts

UR - http://www.scopus.com/inward/record.url?scp=76949083205&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=76949083205&partnerID=8YFLogxK

M3 - Article

VL - 47

SP - 103

EP - 109

JO - Physical and Chemical News

JF - Physical and Chemical News

SN - 1114-3800

ER -