| Autor: |
Puzhel, A. O., Borisov, V. A., Adeeva, L. N. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2784 Issue 1, p1-7, 7p |
| Abstrakt: |
In this paper, the process of fluoroammonium treatment of a spent fluid catalytic cracking catalyst (FCC catalyst) is studied. The main thermodynamic characteristics for reactions describing the process are calculated. Ammonium fluoride was taken in excess 1 : 1.5. It has been established that the fluorination of silicon in the composition of the catalyst is the most intense. Based on experimental data, a kinetic model for the fluorination reaction of silicon oxide has been determined. The apparent activation energy and the rate constant of the chemical reaction are calculated. Kinetic curves of the fluorination processes of aluminum, iron compounds and for the FCC catalyst are obtained. The residue after fluorination is investigated by IR spectroscopy and SEM. The composition of the residue after fluorination has been established. It is determined that the concentration of REE occurs due to the removal of silicon and partial removal of iron and aluminum compounds in the form of soluble fluoroammonium complexes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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