Tīmeklis2024. gada 15. dec. · To characterize the chemical state of Fe centers in ZSM-5, X-ray photoelectron spectroscopy (XPS; Thermal ESCALAB 250) is performed by using Al … Tīmeklis2024. gada 4. maijs · ZSM-5 was metal modified using different loadings (0.5–5 wt%) of Fe and Cr via the impregnation method. The metal modified ZSM-5 samples are compared and the effect of metal loading on the physicochemical properties and catalytic performance is investigated.
Enhancing Fenton-like oxidation of crystal violet over Fe/ZSM-5 in …
Tīmeklis2024. gada 24. jūl. · Fe–ZSM-5 (Si:Al = 11.4) exhibited 95% conversion of N 2 O at 500 °C in contrast to Fe-BEA (93) achieving just 20% conversion of N 2 O at 575 °C [ 29 ]. The work of both these groups show that Si/Al ratio is an important factor for activity of an N 2 O decomposition catalyst. Tīmeklis2024. gada 7. jūl. · Abstract. A facile strategy is applied to construct Fe supported ZSM-5 (Fe/HZ5-HTS) via hydrothermal post-treatment and applied to ethane non-oxidative … dcp-j582n インク交換
ZSM-5 - Wikipedia
TīmeklisPirms 2 dienām · ZSM-5 (CBV 3024E, SiO 2 /Al 2 O 3 mole ratio is 30, Zeolyst) was used as the catalyst for microwave-driven plastic depolymerization. The ZSM-5 was calcined at 550 °C for 6 h to convert it from ammonium form to proton form (H-ZSM-5) before use. ... A noticeable increase in the quantity of C 2 =-C 4 = was detected for … Tīmeklis2024. gada 8. febr. · Transition-metal-modified zeolites have recently gained the greatest interest among scientists. Ab initio calculations within the density functional theory were used. The exchange and correlation functional was approximated with the Perdew–Burke–Ernzerhof (PBE) functional. Cluster models of ZSM-5 … TīmeklisFe–ZSM-5 was produced from H–ZSM-5 by solid-state exchange using the following procedure. Four grams of NH 4–ZSM-5 was calcined as described above. After8hat 823 K, the air flow was stopped and the reactor was purged at 823 K for 1 h with a 50 cm3/min flow of helium. The reactor was then cooled to room temperature in helium … dcp-j582n スキャン