Place of publication: United States, Ann Arbor; ISBN=978-1-339-52768-0
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.S.
نظم درجات
Applied Chemistry
کسي که مدرک را اعطا کرده
The Petroleum Institute (United Arab Emirates)
امتياز متن
2015
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
The purification of wastewater from phenol and other phenolic compounds which are discharged from different industrial activities is an important environmental issue. Such compounds cause severe damage to the human body and to the environment. In this study, the degradation of phenol is investigated by using copper ferrite CuFe2O4 catalysts. CuFe 2O4 powders were prepared by two different methods: sol-gel and co-precipitation methods, and followed by thermal treatments at 500 °C and 750°C. The prepared ferrites were characterized for their morphology, crystallinity, purity, and stability using various techniques such as X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and BET surface area analysis. These techniques revealed that the sol-gel derived samples exhibited spinel ferrite phases of higher crystallinity and purity than the co-precipitation derived CuFe2O4 samples. Both methods demonstrated CuFe2O4 thermal stability up to about 750 °C as confirmed by TGA measurements. The IR spectra showed the vibrational mode around 600 cm-1 which emphasizes the presence of the ferrite phase. The SEM images indicated that the "asprepared" CuFe2O4 powders exhibited a porous sponge-like morphology which changed significantly upon calcination at 500 °C and 750 °C.