Size-dependent sulfur poisoning of silica-supported monodisperse Pt nanoparticle hydrogenation catalysts

Lyndsey M. Baldyga; Selasi O. Blavo; Chun Hong Kuo; Chia Kuang Tsung; John N. Kuhn

doi:10.1021/cs300625m

Size-dependent sulfur poisoning of silica-supported monodisperse Pt nanoparticle hydrogenation catalysts

Lyndsey M. Baldyga, Selasi O. Blavo, Chun Hong Kuo, Chia Kuang Tsung, John N. Kuhn^*

^*Corresponding author for this work

National Yang Ming Chiao Tung University

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

32 Scopus citations

Abstract

Colloidal techniques were used to synthesize monodisperse Pt nanoparticles of four distinct sizes between 2 and 7 nm before immobilization onto silica. Ethylene hydrogenation demonstrated structure-insensitive behavior with TOFs of ∼12 s^-1 before poisoning. With thiophene being a strong binding adsorbate, TOFs decreased by orders of magnitude, and the poisoning-induced antipathetic structure sensitivity because thiophene adsorbed more strongly to the coordinatively unsaturated, as compared with coordinatively saturated, surfaces, and the degree of saturation increased with decreasing Pt size. This effort is part of a broader study in which structure sensitivity is analyzed for adsorbates in complex reaction networks.

Original language	English
Pages (from-to)	2626-2629
Number of pages	4
Journal	ACS Catalysis
Volume	2
Issue number	12
DOIs	https://doi.org/10.1021/cs300625m
State	Published - 7 Dec 2012

Keywords

colloidal synthesis with size control
platinum
structure sensitivity
sulfur poisoning

Access to Document

10.1021/cs300625m

Cite this

@article{3cc33c93e00b48b39ede5a6b4156ef01,

title = "Size-dependent sulfur poisoning of silica-supported monodisperse Pt nanoparticle hydrogenation catalysts",

abstract = "Colloidal techniques were used to synthesize monodisperse Pt nanoparticles of four distinct sizes between 2 and 7 nm before immobilization onto silica. Ethylene hydrogenation demonstrated structure-insensitive behavior with TOFs of ∼12 s-1 before poisoning. With thiophene being a strong binding adsorbate, TOFs decreased by orders of magnitude, and the poisoning-induced antipathetic structure sensitivity because thiophene adsorbed more strongly to the coordinatively unsaturated, as compared with coordinatively saturated, surfaces, and the degree of saturation increased with decreasing Pt size. This effort is part of a broader study in which structure sensitivity is analyzed for adsorbates in complex reaction networks.",

keywords = "colloidal synthesis with size control, platinum, structure sensitivity, sulfur poisoning",

author = "Baldyga, {Lyndsey M.} and Blavo, {Selasi O.} and Kuo, {Chun Hong} and Tsung, {Chia Kuang} and Kuhn, {John N.}",

year = "2012",

month = dec,

day = "7",

doi = "10.1021/cs300625m",

language = "English",

volume = "2",

pages = "2626--2629",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Size-dependent sulfur poisoning of silica-supported monodisperse Pt nanoparticle hydrogenation catalysts

AU - Baldyga, Lyndsey M.

AU - Blavo, Selasi O.

AU - Kuo, Chun Hong

AU - Tsung, Chia Kuang

AU - Kuhn, John N.

PY - 2012/12/7

Y1 - 2012/12/7

N2 - Colloidal techniques were used to synthesize monodisperse Pt nanoparticles of four distinct sizes between 2 and 7 nm before immobilization onto silica. Ethylene hydrogenation demonstrated structure-insensitive behavior with TOFs of ∼12 s-1 before poisoning. With thiophene being a strong binding adsorbate, TOFs decreased by orders of magnitude, and the poisoning-induced antipathetic structure sensitivity because thiophene adsorbed more strongly to the coordinatively unsaturated, as compared with coordinatively saturated, surfaces, and the degree of saturation increased with decreasing Pt size. This effort is part of a broader study in which structure sensitivity is analyzed for adsorbates in complex reaction networks.

AB - Colloidal techniques were used to synthesize monodisperse Pt nanoparticles of four distinct sizes between 2 and 7 nm before immobilization onto silica. Ethylene hydrogenation demonstrated structure-insensitive behavior with TOFs of ∼12 s-1 before poisoning. With thiophene being a strong binding adsorbate, TOFs decreased by orders of magnitude, and the poisoning-induced antipathetic structure sensitivity because thiophene adsorbed more strongly to the coordinatively unsaturated, as compared with coordinatively saturated, surfaces, and the degree of saturation increased with decreasing Pt size. This effort is part of a broader study in which structure sensitivity is analyzed for adsorbates in complex reaction networks.

KW - colloidal synthesis with size control

KW - platinum

KW - structure sensitivity

KW - sulfur poisoning

UR - http://www.scopus.com/inward/record.url?scp=84870911468&partnerID=8YFLogxK

U2 - 10.1021/cs300625m

DO - 10.1021/cs300625m

M3 - Article

AN - SCOPUS:84870911468

SN - 2155-5435

VL - 2

SP - 2626

EP - 2629

JO - ACS Catalysis

JF - ACS Catalysis

IS - 12

ER -

Size-dependent sulfur poisoning of silica-supported monodisperse Pt nanoparticle hydrogenation catalysts

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this