The effect of mesoporous support on the catalytic performance of Pd nanoparticles in the hydrogenation of cyclopentene
| Autor: | Abdullah M. Alhanash, Ali Aldalbahi, Mhamed Benaissa, Murad Eissa, Mostafizur Rahaman, Mohamed S. Hamdy, Shaykha Alzahly, Govindasami Periyasami |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Hydrogen Mechanical Engineering Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Solvent chemistry.chemical_compound chemistry Mechanics of Materials Pd nanoparticles Cyclopentene General Materials Science 0210 nano-technology Mesoporous material Nuclear chemistry Palladium |
| Zdroj: | Journal of Porous Materials. 27:1735-1743 |
| ISSN: | 1573-4854 1380-2224 |
| Popis: | Here, a comparison between four mesoporous siliceous compounds is conducted to investigate the effect of support on formation and catalytic behavior of palladium (Pd) nanoparticles. The four investigated supports are: the commercially available MCM-41, SBA-15 and MCM-48, in addition to the home-made TUD-1 material. The same amount of Pd (Si/Pd = 200) was impregnated in the four mesoporous samples by using water as a solvent, and no further activation/reduction was performed. The obtained characterization data showed that SBA-15 accommodated the maximum amount of PdO nanoparticles that located inside its channels, while the maximum surface area after impregnation was obtained in MCM-48 sample. The four Pd samples was used to catalyze the solvent-free reduction of cyclopentene at room temperature by using 1 atm of hydrogen gas. Pd-TUD-1 exhibited the maximum activity with a total TOF of 4.83 s−1, while the TOF of SBA-15 was 2.28 s−1. The activity results clearly show the effect of the open three dimensional structure of TUD-1 in offering the maximum accessibility to and from Pd nanoparticles’ active sites. |
| Databáze: | OpenAIRE |
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