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Electron tomography of heterogeneous catalysts

  • L. Laffont
  • , M. Weyland
  • , Robert Raja
  • , John Meurig Thomas
  • , P. A. Midgley

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Heterogeneous catalysts, in which 'heavy' (high Z) nanoparticles are supported on 'light' (low Z) supports, are extremely important for production of bulk chemicals. The efficiency of these catalysts is closely controlled by their three dimensional (3D) structure. This paper will examine the 3D distribution of bimetallic nanoparticles embedded within a mesoporous silica support, MCM-41, using high angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) tomography. This technique has shown itself to be more suitable than conventional TEM electron tomography for these specimens as it offers the advantage of a reduced damage rate and a high contrast incoherent signal. Analysis of 3D structure of these catalysts is demonstrated in both a qualitative and quantitative manner.

Original languageEnglish
Title of host publicationInstitute of Physics Conference Series
Subtitle of host publicationMicroscopy of Semiconducting Materials 2003
PublisherIOP Publishing
Pages459-462
Number of pages4
Publication statusPublished - 19 Oct 2004
Externally publishedYes
EventElectron Microscopy and Analysis 2003 - Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference - Oxford, United Kingdom
Duration: 3 Sept 20035 Sept 2003

Publication series

NameInstitute of Physics Conference Series
PublisherIOP Publishing
Volume179
ISSN (Print)0951-3248

Conference

ConferenceElectron Microscopy and Analysis 2003 - Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference
Country/TerritoryUnited Kingdom
CityOxford
Period3/09/035/09/03

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