Zeolite Cu–ZSM-5: material characteristics and NO decomposition
Yazarlar (4)
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Microporous and mesoporous materials (Q1) | ||
| Makale Dili | – | Basım Tarihi | 08-2000 |
| Cilt / Sayı / Sayfa | 38 / 2 / 287–300 | DOI | – |
| Makale Linki | https://www.sciencedirect.com/science/article/pii/S1387181100001487 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| Zeolite ZSM-5 (SiO2/Al2O3 ratio 53:1) ion exchanged with Cu2+ to 0%, 74% and 160% was characterized by X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Infrared (IR) spectroscopy, Electron spectroscopy for chemical analysis (ESCA) and ammonia desorption. A more limited set of data was obtained for Cu–ZSM-5-33, ion exchanged with 0%, 104% and 210% Cu2+ ions. All catalysts lose water below 100°C. More strongly bound water, approximately two molecules per Cu2+ ion, emerge at a higher temperature. This corresponds either to an incomplete hydration shell for zeolite-bound Cu2+ ions or to the decomposition of Cu(OH)2 and simultaneous reactive adsorption of copper ions on the inner surface of the zeolite. The process occurs in the same temperature range, 150–350°C, where XRD reveals rearrangements in the H-form of the catalyst. Reactions between the exchangeable cations and the … |
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