Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1

HAADF-STEM images of gold nano particles immobilized on MCM41. In cooperation with Z. Li and R. Richards, International University Bremen.

Wedgemount Odlo Sportstahlgrau Odlo Wedgemount Odlo Shorts Wedgemount Wedgemount Shorts Odlo Shorts Shorts Sportstahlgrau Sportstahlgrau Sportstahlgrau Odlo Wedgemount Shorts HAADF-STEM images of gold nano particles immobilized on MCM41. In cooperation with Z. Li and R. Richards, International University Bremen.

Classical heterogeneous catalysts consist of a nano crystalline porous support material covered by a high density of nano particles providing the active catalyst sites. In addition to the size and shape distribution of the active catalyst particles, the quality of a catalyst is crucially affected by the shape, pore size distribution and permeability of the support material as well as the distribution of the active catalyst on the support material. Using electron microscopy, it is possible to image and analyze the distribution and composition of the catalytic material. Figure 1-2 shows an example of gold nano particles immobilized on a MCM41 zeolite. The HAADF-STEM images clearly show the hexagonal pore structure of the zeolite and the average gold loading of the support material.

However, simple 2D projections mainly reveal information about the average particle density in the projected area, but the shape and pore size of the support material are difficult to interpret accurately. Furthermore, especially for thick samples, it can be difficult to unambiguously identify the catalyst particles themselves.
In contrast, the 3D volume reconstructed by electron tomography reveals significantly more details of the material's structure. Using a commercial oil refining catalyst as an example (Figure 3 and 4), it can be seen that the support material consists of nano sheets with a thickness of 4-5 nm randomly distributed in 3D, forming pores of different size and shape. Furthermore, the 3D distribution of the catalyst particles can be visualized.

Odlo Sportstahlgrau Sportstahlgrau Odlo Wedgemount Wedgemount Shorts Sportstahlgrau Odlo Shorts Shorts Wedgemount Odlo Wedgemount Shorts Wedgemount Sportstahlgrau Shorts Odlo 3-D visualization of a commercial oil-refining catalyst: the structure and pores of the alumina support and the distribution of the catalyst nanoparticles can be recognized. C. Kübel, A. Voigt, R. Schoenmakers, M. Otten, D. Su, T.-C. Lee, A. Carlsson, J. Bradley, Microscopy and Microanalysis, 2005, 11(5), 378-400; 'Recent Advances in Electron Tomography: TEM and HAADF-STEM Tomography for Materials Science and Semiconductor Applications'. Copyright 2005 Cambridge University Press.

Shorts Shorts Sportstahlgrau Odlo Sportstahlgrau Wedgemount Wedgemount Sportstahlgrau Odlo Sportstahlgrau Odlo Shorts Odlo Wedgemount Odlo Wedgemount Shorts Shorts Wedgemount

Surface rendering showing the detailed structure of an isolated alumina support sheet. C. Kübel, A. Voigt, R. Schoenmakers, M. Otten, D. Su, T.-C. Lee, A. Carlsson, J. Bradley, Microscopy and Microanalysis, 2005, 11(5), 378-400; 'Recent Advances in Electron Tomography: TEM and HAADF-STEM Tomography for Materials Science and Semiconductor Applications'. Copyright 2005 Cambridge University Press.

Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1 Sportstahlgrau Wedgemount Shorts Odlo Wedgemount Sportstahlgrau Odlo Shorts Wedgemount Wedgemount Odlo Odlo Shorts Shorts Sportstahlgrau Odlo Wedgemount Shorts Sportstahlgrau qqgtvwA1

Material & Pflege

äußere Gewebematerial:95% Polyamid, 5% Elastan

Pflegehinweise:Maschinenwäsche bei 40 ° C

Einzelheiten

Sport:urban Outdoor

er:teilweise elastisch

erhebt euch:normal

Einzelheiten:Sitztasche, Steckfach

Extras:schnell trocknend

Befestigung:verdeckte fliegen

Taschen:Gesäßtasche, Seitentaschen

Muster:einfach

Einzelheiten:Reißverschluss

Eigenschaften:atmungsaktiv

Artikelnummer:od142e01h-c12

odlo
Follow