| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hensen, Emiel, J. M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023Hemicellulosic Sugars and Lignincitations
- 2023Stability of In2O3 Nanoparticles in PTFEcontaining Gas Diffusion Electrodes for CO2 electroreduction to Formatecitations
- 2023A study of Cu-Rh electrodeposition**citations
- 2023Evolution of bismuth oxide catalysts during electrochemical CO2 reductioncitations
- 2023Role of strontium cations in ZSM-5 zeolite in the methanol-to-hydrocarbons reactioncitations
- 2022Alumina-Supported NiMo Hydrotreating CatalystsAspects of 3D Structure, Synthesis, and Activitycitations
- 2021Twin boundary migration in an individual platinum nanocrystal during catalytic CO oxidationcitations
- 2021Stabilization Effects in Binary Colloidal Cu and Ag Nanoparticle Electrodes under Electrochemical CO2 Reduction Conditionscitations
- 2018Temperature-programmed plasma surface reactioncitations
- 2006Characterization and reactivity of Ga+ and GaO+ cations in zeolite ZSM-5citations
- 2003Characterization of Ga/HZSM-5 and Ga/HMOR synthesized by chemical vapor deposition of trimethylgalliumcitations
Places of action
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article
Characterization and reactivity of Ga+ and GaO+ cations in zeolite ZSM-5
Abstract
The reduction of Ga(CH3)3/ZSM-5 was closely followed by Fourier transform infrared spectroscopy and Ga K-edge X-ray absorption near-edge spectroscopy. Chemical vapor deposition of trimethylgallium on HZSM-5 (TMG/ZSM-5) resulted in the replacement of nearly all Brønsted acid protons by dimethylgallium species. Removal of the methyl ligands from the cationic Ga clusters gave charge-compensating Ga+ and species. At high temperatures and in the absence of hydrogen, the Ga+ species were the most stable, although decomposition of the species was very slow. Ga+ ions can be oxidized by nitrous oxide at low temperature (473 K), resulting in the formation of gallyl (GaO+) cations. A detailed comparison of the reactivity of Brønsted acid protons (HZSM-5) and Ga+ ions (reduced TMG/ZSM-5) in propane dehydrogenation showed that the former converted propane via protolytic cracking with methane, ethane, and propene as hydrocarbon products, whereas monovalent Ga+ ions produced propene almost exclusively. The reaction data suggest that propane was converted over Ga+ cations but not over cations. The initial rate of propane dehydrogenation was highest for GaO+ ions, although rapid deactivation was observed, due to the higher barrier for regeneration of GaO+ ions than for formation of less active Ga+ ions.ERRATUM : Journal of Catalysis, Volume 240, Issue 1, 15 May 2006, Page 85,