Novel micro-reactor flow cell for investigation of model catalysts usingin situgrazing-incidence X-ray scattering
| Autor: | Martin Nielsen, Ana Diaz, Thomas Pedersen, Jane Hvolbæk Nielsen, Jens Wenzel Andreasen, Jan Kehres, Federico Masini, Ole Hansen, Ib Chorkendorff |
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| Rok vydání: | 2016 |
| Předmět: |
In situ
micro-reactor Nuclear and High Energy Physics Materials science Fabrication Analytical chemistry Silicon on insulator 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention law GIWAXS Instrumentation GISAXS Radiation Scattering in situ X-ray 021001 nanoscience & nanotechnology Research Papers Synchrotron 0104 chemical sciences Grazing-incidence small-angle scattering Microreactor 0210 nano-technology |
| Zdroj: | Journal of Synchrotron Radiation Kehres, J, Pedersen, T, Masini, F, Andreasen, J W, Nielsen, M M, Diaz, A, Nielsen, J H, Hansen, O & Chorkendorff, I 2016, ' Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scattering ', Journal of Synchrotron Radiation, vol. 23, no. 2, pp. 455-463 . https://doi.org/10.1107/S1600577516001387 |
| ISSN: | 1600-5775 |
| Popis: | The design and performance of a novel micro-reactor in situ flow cell permitting investigation of model catalysts with grazing-incidence small- and wide-angle X-ray scattering is presented. The design, fabrication and performance of a novel and highly sensitive micro-reactor device for performing in situ grazing-incidence X-ray scattering experiments of model catalyst systems is presented. The design of the reaction chamber, etched in silicon on insulator (SIO), permits grazing-incidence small-angle X-ray scattering (GISAXS) in transmission through 10 µm-thick entrance and exit windows by using micro-focused beams. An additional thinning of the Pyrex glass reactor lid allows simultaneous acquisition of the grazing-incidence wide-angle X-ray scattering (GIWAXS). In situ experiments at synchrotron facilities are performed utilizing the micro-reactor and a designed transportable gas feed and analysis system. The feasibility of simultaneous in situ GISAXS/GIWAXS experiments in the novel micro-reactor flow cell was confirmed with CO oxidation over mass-selected Ru nanoparticles. |
| Databáze: | OpenAIRE |
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