Remarkable activity of Pd catalyst supported on alumina synthesized via a hydrothermal route for hydrogen release of perhydro-N-propylcarbazole
Autor: | Hansong Cheng, Zhiwen Chen, Mengdi Zhang, Yuan Dong, Junwei Hua, Ming Yang |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Acid property 01 natural sciences Hydrothermal circulation 0104 chemical sciences Catalysis Fuel Technology Chemical engineering chemistry Specific surface area Dehydrogenation Particle size 0210 nano-technology Dispersion (chemistry) |
Zdroj: | International Journal of Hydrogen Energy. 46:9718-9729 |
ISSN: | 0360-3199 |
Popis: | The investigation of dehydrogenation catalysts to achieve rapidly hydrogen release of Liquid Organic Hydrogen Carriers (LOHCs) are of crucial importance for large-scale applications. The catalyst supports with bulk surface area and decent acid-base nature is a key parameter for catalyst to improve its catalytic performance as well as reduce precious metal dosage. Herein, alumina was chosen as a support for Pd loading and prepared through hydrothermal route at different temperatures. The morphology and surface acid property of the alumina supports were investigated in detail. The results revealed that the hydrothermal temperature had a closely effect on the morphology, surface acidity and specific surface area of alumina, resulting in a further impact on Pd dispersion and particle size associated tightly with catalytic activity of Pd/Al2O3. The catalyst with 1 wt% Pd loaded on alumina carrier prepared via hydrothermal treatment at 120 °C showed the best catalytic performance for dehydrogenation of perhydro-N-propylcarbazole (12H-NPCZ). Full dehydrogenation with 100% conversion to N-propylcarbazole (NPCZ) could be achieved after 360 min at 180 °C and 101 kPa, which is higher than that of commercial 5 wt% Pd/Al2O3 catalyst. The catalyst has potential commercial application value in large-scale application of LOHC technology. |
Databáze: | OpenAIRE |
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