Microchemical engineering of catalytic reactions

E. Schütz; N. Hartmann; Y. Kevrekidis; R. Imbihl

doi:10.1023/A:1019025316038

Microchemical engineering of catalytic reactions

E. Schütz, N. Hartmann, Y. Kevrekidis, R. Imbihl

Chemical & Biological Engineering

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

25 Scopus citations

Abstract

The catalytic reduction of NO with H₂ or CO and the O₂ + H₂ reaction have been investigated at low pressure (p < 10^-3 mbar) on microstructured bimetallic Pt(100)/Rh and Pt(100)/Ti surfaces prepared by lithographic techniques. Photoemission electron microscopy (PEEM) was the spatially resolving technique used. It is shown that diffusional coupling leads to dynamic eftects which are size-dependent and thus can be controlled through the design of the surface microstructure. In connection with periodic parameter forcing these dynamic effects can potentially be exploited to improve the yield and selectivity of catalytic reactions.

Original language	English (US)
Pages (from-to)	181-186
Number of pages	6
Journal	Catalysis Letters
Volume	54
Issue number	4
DOIs	https://doi.org/10.1023/A:1019025316038
State	Published - 1998

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

Keywords

Automotive catalytic converter
Chemical waves
Composite surfaces
NO reduction
PEEM
Photoemission electron microscopy
Pt
Rh
Scanning photoelectron microscopy
Surface diffusion

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title = "Microchemical engineering of catalytic reactions",

abstract = "The catalytic reduction of NO with H2 or CO and the O2 + H2 reaction have been investigated at low pressure (p < 10-3 mbar) on microstructured bimetallic Pt(100)/Rh and Pt(100)/Ti surfaces prepared by lithographic techniques. Photoemission electron microscopy (PEEM) was the spatially resolving technique used. It is shown that diffusional coupling leads to dynamic eftects which are size-dependent and thus can be controlled through the design of the surface microstructure. In connection with periodic parameter forcing these dynamic effects can potentially be exploited to improve the yield and selectivity of catalytic reactions.",

keywords = "Automotive catalytic converter, Chemical waves, Composite surfaces, NO reduction, PEEM, Photoemission electron microscopy, Pt, Rh, Scanning photoelectron microscopy, Surface diffusion",

author = "E. Sch{\"u}tz and N. Hartmann and Y. Kevrekidis and R. Imbihl",

note = "Funding Information: This work was financially supported by the BMBF (FRG) and the NSF (USA). The authors thank M. Graham for original discussions and M. Lange for the preparation of the catalysts.",

year = "1998",

doi = "10.1023/A:1019025316038",

language = "English (US)",

volume = "54",

pages = "181--186",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

number = "4",

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TY - JOUR

T1 - Microchemical engineering of catalytic reactions

AU - Schütz, E.

AU - Hartmann, N.

AU - Kevrekidis, Y.

AU - Imbihl, R.

N1 - Funding Information: This work was financially supported by the BMBF (FRG) and the NSF (USA). The authors thank M. Graham for original discussions and M. Lange for the preparation of the catalysts.

PY - 1998

Y1 - 1998

N2 - The catalytic reduction of NO with H2 or CO and the O2 + H2 reaction have been investigated at low pressure (p < 10-3 mbar) on microstructured bimetallic Pt(100)/Rh and Pt(100)/Ti surfaces prepared by lithographic techniques. Photoemission electron microscopy (PEEM) was the spatially resolving technique used. It is shown that diffusional coupling leads to dynamic eftects which are size-dependent and thus can be controlled through the design of the surface microstructure. In connection with periodic parameter forcing these dynamic effects can potentially be exploited to improve the yield and selectivity of catalytic reactions.

AB - The catalytic reduction of NO with H2 or CO and the O2 + H2 reaction have been investigated at low pressure (p < 10-3 mbar) on microstructured bimetallic Pt(100)/Rh and Pt(100)/Ti surfaces prepared by lithographic techniques. Photoemission electron microscopy (PEEM) was the spatially resolving technique used. It is shown that diffusional coupling leads to dynamic eftects which are size-dependent and thus can be controlled through the design of the surface microstructure. In connection with periodic parameter forcing these dynamic effects can potentially be exploited to improve the yield and selectivity of catalytic reactions.

KW - Automotive catalytic converter

KW - Chemical waves

KW - Composite surfaces

KW - NO reduction

KW - PEEM

KW - Photoemission electron microscopy

KW - Pt

KW - Rh

KW - Scanning photoelectron microscopy

KW - Surface diffusion

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DO - 10.1023/A:1019025316038

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SN - 1011-372X

VL - 54

SP - 181

EP - 186

JO - Catalysis Letters

JF - Catalysis Letters

IS - 4

ER -

Microchemical engineering of catalytic reactions

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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