Characterization of Catalytic MaterialsCatalytic materials are essential to nearly every commercial and industrial chemical process in order to make reaction times faster and more efficient. Understanding the microstructure of such materials is essential to designing improved catalytic properties. This volume in the materials characterization series reviews the more common types characterization methods used for understanding surface and structural properties of most types of commercially used catalytic materials.
|
From inside the book
Results 6-10 of 59
Page 9
... obtain a site density of 1.12 × 1015 sites/cm2, corresponding to an average surface area of 0.89 nm2 per Pt surface atom. Surface Composition Many techniques are available for the surface characterization of bulk metals and only a brief ...
... obtain a site density of 1.12 × 1015 sites/cm2, corresponding to an average surface area of 0.89 nm2 per Pt surface atom. Surface Composition Many techniques are available for the surface characterization of bulk metals and only a brief ...
Page 10
... obtained from the surface. If one assumes that only the first layer is different from the bulk, one can use the following equation22 to relate Auger signal intensities to the surface and bulk concentrations: where I(A) and I(B) are ...
... obtained from the surface. If one assumes that only the first layer is different from the bulk, one can use the following equation22 to relate Auger signal intensities to the surface and bulk concentrations: where I(A) and I(B) are ...
Page 11
... obtained using SIMS. Often SIMS is used in conjunction with other surface analysis techniques. Similarly, ion ... obtain structural informa- tion, especially in the case of single-crystal surfaces. Gas–Surface Interactions Temperature ...
... obtained using SIMS. Often SIMS is used in conjunction with other surface analysis techniques. Similarly, ion ... obtain structural informa- tion, especially in the case of single-crystal surfaces. Gas–Surface Interactions Temperature ...
Page 15
... obtained through the use of IR, HREELS, and NEXAFS. A comprehensive, multifaceted catalyst-characterization regimen provides the data necessary to better understand catalytic performance and to diagnose the reasons for loss of catalytic ...
... obtained through the use of IR, HREELS, and NEXAFS. A comprehensive, multifaceted catalyst-characterization regimen provides the data necessary to better understand catalytic performance and to diagnose the reasons for loss of catalytic ...
Page 19
... obtain use- ful electron paths. Also, electron microscopy is usually performed on samples in a vacuum. Commonly applied probes of metals in catalysts and the conditions of their use are listed in Table 2.1. The suitability of ...
... obtain use- ful electron paths. Also, electron microscopy is usually performed on samples in a vacuum. Commonly applied probes of metals in catalysts and the conditions of their use are listed in Table 2.1. The suitability of ...
Contents
1 | |
17 | |
3 Bulk Metal Oxides | 47 |
4 Supported Metal Oxides | 69 |
5 Bulk Metal Sulfides | 89 |
6 Supported Metal Sulfides | 109 |
7 Zeolites and Molecular Sieves | 129 |
Methods of Preparation and Characterization | 149 |
LowEnergy Electron Diffraction LEED | 179 |
Mössbauer Spectroscopy | 180 |
Neutron Activation Analysis NAA | 181 |
Neutron Diffraction | 182 |
Physical and Chemical Adsorption for the Measurement of Solid Surface Areas | 183 |
Raman Spectroscopy | 184 |
Scanning Electron Microscopy SEM | 185 |
Scanning Transmission Electron Microscopy STEM | 186 |
Technique Summaries | 165 |
Auger Electron Spectroscopy AES | 167 |
Dynamic Secondary Ion Mass Spectrometry DSIMS | 168 |
Electron Energyloss Spectroscopy in the Transmission Electron Microscope EELS | 169 |
Electron Paramagnetic Resonance Electron Spin Resonance | 170 |
Electron Microprobe XRay Microanalysis EPMA | 171 |
EnergyDispersive XRay Spectroscopy EDS | 172 |
Extended XRay Absorption Fine Structure EXAFS | 173 |
Fourier Transform Infrared Spectroscopy FTIR | 174 |
High Resolution Electron Energy Loss Spectroscopy HREELS | 175 |
Inductively Coupled Plasma Mass Spectrometry ICPMS | 176 |
Inductively Coupled PlasmaOptical Emission Spectroscopy ICPOES | 177 |
Ion Scattering Spectroscopy ISS | 178 |
Scanning Tunneling Microscopy and Scanning Force Microscopy STM and SFM | 187 |
Solid State Nuclear Magnetic Resonance NMR | 188 |
Static Secondary Ion Mass Spectrometry Static SIMS | 189 |
Temperature Programmed Techniques | 190 |
Transmission Electron Microscopy TEM | 191 |
Ultraviolet Photoelectron Spectroscopy UPS | 192 |
XRay Diffraction XRD | 193 |
XRay Fluorescence XRF | 194 |
XRay Photoelectron and Auger Electron Diffraction XRD and AED | 195 |
XRay Photoelectron Spectroscopy XPS | 196 |
Index | 197 |
Other editions - View all
Common terms and phrases
acid adsorbed adsorption alloys alumina aluminum analysis atoms beam bond bulk metal calcination Catal catalytic activity catalytic behavior catalytic materials cation Chem chemical chemical shifts chemisorption Chemistry cobalt coordination crystalline crystallites desorption determine electron microscopy elements energy EXAFS faujasites Figure function hydrogen hydrogenolysis I. E. Wachs interaction lattice layer measured metal catalysts metal oxide catalysts metal oxide overlayers metal oxide phases microporous Mo ions molecular sieves molecules molybdenum oxide monolayer coverage MoS2 Mössbauer Mössbauer spectroscopy neutron obtained oxide support oxygen particle peak photoelectron pillared clays pore powder preparation probe promoter R. R. Chianelli Raman Raman spectroscopy reaction reduced resolution ruthenium sample single crystal solid solution species spectra spectroscopy structure studies sulfides sulfur supported metal oxide surface area surface metal oxide synchrotron techniques temperature temperature-programmed thiophene tion transmission electron microscopy two-dimensional metal oxide X-ray absorption X-ray diffraction XANES zeolites