Journal
RSC ADVANCES
Volume 5, Issue 51, Pages 41269-41277Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra05039a
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21176086, 21376101]
Ask authors/readers for more resources
Stability and deactivation of Fe-ZSM-5 zeolite catalyst for catalytic wet peroxide oxidation (CWPO) of phenol were studied in a membrane reactor. Firstly, the Fe-ZSM-5 zeolite membrane catalyst was prepared by a paper-making/sintering process, secondary growth process and incipient wetness impregnation method. And the influence of residence time on the CWPO of phenol was evaluated by modifying the catalyst bed height. Then, stability of the Fe-ZSM-5 zeolite membrane catalyst was studied by the long-term experiment (40 hours). Finally, the deactivation mechanisms of the Fe-ZSM-5 zeolite membrane catalyst were investigated by N-2 adsorption-desorption, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermal gravimetric (TG) analysis, Fourier transform infrared (FT-IR) spectroscopy and Raman spectroscopy, respectively. The results of CWPO of phenol showed that complete phenol conversion with a high TOC conversion (about 60%) was obtained at the catalyst bed height of 4 cm. Meanwhile, good stability with low Fe leaching concentration (about 0.5 mg L-1) and high phenol conversion (above 85%) were obtained after continuously running for 40 hours. Furthermore, the loss of active component, the partial phase change of Fe2O3, the crystallinity change of the ZSM-5 zeolite membrane and the coke formation on the surface of the catalyst were found to be responsible for the deactivation of the catalyst.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available