Understanding silica-supported metal catalysts: Pd/silica as a case study

B. K. Min; A. K. Santra; D. W. Goodman

doi:10.1016/S0920-5861(03)00380-8

Understanding silica-supported metal catalysts: Pd/silica as a case study

B. K. Min, A. K. Santra, D. W. Goodman

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

104 Citations (Scopus)

Abstract

Supported metal catalysts, particularly noble metals supported on SiO ₂, have attracted considerable attention due to the importance of the silica-metal interface in heterogeneous catalysis and in electronic device fabrication. Several important issues, e.g., the stability of the metal-oxide interface at working temperatures and pressures, are not well-understood. In this review, the present status of our understanding of the metal-silica interface is reviewed. Recent results of model studies in our laboratories on Pd/SiO₂/Mo(112) using LEED, AES and STM are reported. In this work, epitaxial, ultrathin, well-ordered SiO₂ films were grown on a Mo(112) substrate to circumvent complications that frequently arise from the silica-silicon interface present in silica thin films grown on silicon.

Original language	English
Pages (from-to)	113-124
Number of pages	12
Journal	Catalysis Today
Volume	85
Issue number	2-4
DOIs	https://doi.org/10.1016/S0920-5861(03)00380-8
Publication status	Published - 2003 Oct 15
Externally published	Yes

Keywords

Alloying and sintering
Films
Inter-diffusion
Metal clusters
Metal-support interaction
Oxide
Palladium
SMSI
STM
Silica
Silicide
Supported catalysts

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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title = "Understanding silica-supported metal catalysts: Pd/silica as a case study",

abstract = "Supported metal catalysts, particularly noble metals supported on SiO 2, have attracted considerable attention due to the importance of the silica-metal interface in heterogeneous catalysis and in electronic device fabrication. Several important issues, e.g., the stability of the metal-oxide interface at working temperatures and pressures, are not well-understood. In this review, the present status of our understanding of the metal-silica interface is reviewed. Recent results of model studies in our laboratories on Pd/SiO2/Mo(112) using LEED, AES and STM are reported. In this work, epitaxial, ultrathin, well-ordered SiO2 films were grown on a Mo(112) substrate to circumvent complications that frequently arise from the silica-silicon interface present in silica thin films grown on silicon.",

keywords = "Alloying and sintering, Films, Inter-diffusion, Metal clusters, Metal-support interaction, Oxide, Palladium, SMSI, STM, Silica, Silicide, Supported catalysts",

author = "Min, {B. K.} and Santra, {A. K.} and Goodman, {D. W.}",

note = "Funding Information: The authors acknowledge with pleasure the support of this work by the Department of Energy, Office of Basic Energy Science, and Division of Chemical Science, and the Robert A. Welch Foundation.",

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doi = "10.1016/S0920-5861(03)00380-8",

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T1 - Understanding silica-supported metal catalysts

T2 - Pd/silica as a case study

AU - Min, B. K.

AU - Santra, A. K.

AU - Goodman, D. W.

N1 - Funding Information: The authors acknowledge with pleasure the support of this work by the Department of Energy, Office of Basic Energy Science, and Division of Chemical Science, and the Robert A. Welch Foundation.

PY - 2003/10/15

Y1 - 2003/10/15

N2 - Supported metal catalysts, particularly noble metals supported on SiO 2, have attracted considerable attention due to the importance of the silica-metal interface in heterogeneous catalysis and in electronic device fabrication. Several important issues, e.g., the stability of the metal-oxide interface at working temperatures and pressures, are not well-understood. In this review, the present status of our understanding of the metal-silica interface is reviewed. Recent results of model studies in our laboratories on Pd/SiO2/Mo(112) using LEED, AES and STM are reported. In this work, epitaxial, ultrathin, well-ordered SiO2 films were grown on a Mo(112) substrate to circumvent complications that frequently arise from the silica-silicon interface present in silica thin films grown on silicon.

AB - Supported metal catalysts, particularly noble metals supported on SiO 2, have attracted considerable attention due to the importance of the silica-metal interface in heterogeneous catalysis and in electronic device fabrication. Several important issues, e.g., the stability of the metal-oxide interface at working temperatures and pressures, are not well-understood. In this review, the present status of our understanding of the metal-silica interface is reviewed. Recent results of model studies in our laboratories on Pd/SiO2/Mo(112) using LEED, AES and STM are reported. In this work, epitaxial, ultrathin, well-ordered SiO2 films were grown on a Mo(112) substrate to circumvent complications that frequently arise from the silica-silicon interface present in silica thin films grown on silicon.

KW - Alloying and sintering

KW - Films

KW - Inter-diffusion

KW - Metal clusters

KW - Metal-support interaction

KW - Oxide

KW - Palladium

KW - SMSI

KW - STM

KW - Silica

KW - Silicide

KW - Supported catalysts

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U2 - 10.1016/S0920-5861(03)00380-8

DO - 10.1016/S0920-5861(03)00380-8

M3 - Article

AN - SCOPUS:0141919286

VL - 85

SP - 113

EP - 124

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

IS - 2-4

ER -

Understanding silica-supported metal catalysts: Pd/silica as a case study

Abstract

Keywords

ASJC Scopus subject areas

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