title: Relating structure and composition with accessibility of a single catalyst particle using correlative 3-dimensional micro-spectroscopy.
abstract: To understand how hierarchically structured functional materials operate, analytical tools are needed that can reveal small structural and chemical details in large sample volumes. Often, a single method alone is not sufficient to get a complete picture of processes happening at multiple length scales. Here we present a correlative approach combining three-dimensional X-ray imaging techniques at different length scales for the analysis of metal poisoning of an individual catalyst particle. The correlative nature of the data allowed establishing a macro-pore network model that interprets metal accumulations as a resistance to mass transport and can, by tuning the effect of metal deposition, simulate the response of the network to a virtual ageing of the catalyst particle. The developed approach is generally applicable and provides an unprecedented view on dynamic changes in a material's pore space, which is an essential factor in the rational design of functional porous materials.
authors: Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors: Yijin
authors: Y
authors: Liu
authors: Inorganic Chemistry and Catalysis group, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
authors: Florian
authors: 0000-0001-5581-5790
authors: F
authors: Meirer
authors: Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors: Courtney M
authors: CM
authors: Krest
authors: Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors: Samuel
authors: S
authors: Webb
authors: Inorganic Chemistry and Catalysis group, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
authors: Bert M
authors: BM
authors: Weckhuysen
mesh_terms: D002384:Catalysis; D005453:Fluorescence; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008422:Materials Testing / Q000379:methods; D008670:Metals / Q000737:chemistry*; D008853:Microscopy / Q000295:instrumentation / Q000379:methods; D008956:Models, Chemical; D010316:Particle Size; D016062:Porosity; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods*; D017356:Synchrotrons; D055114:X-Ray Microtomography / Q000295:instrumentation / Q000379:methods
chemical_list: D008670:Metals