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Synthesis Of Nano Ni-Mo/γ-Al2O3 Catalyst

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Abstract

Nano γ-Al2O3 support was prepared by co-precipitation method by using different calcination temperatures (550, 600, and 750) oC. Then nano NiMo/γ-Al2O3 catalyst was prepared by impregnation method were nickel carbonate (source of Ni) and ammonium paramolybdate (source of Mo) on the best prepared nano γ-Al2O3 support at calcination temperature 550 oC. Make the characterizations for prepared nano γ-Al2O3 support at different temperatures and for nano NiMo/γ-Al2O3 catalyst like X-ray diffraction, X-ray fluorescent, AFM, SEM, BET surface area, and pore volume.The Ni and Mo percentages in the prepared nano NiMo/γ-Al2O3 catalyst determined by X-ray fluorescence were 2.924 wt % and 12.9 wt %, respectively. SEM of prepared nano γ-Al2O3 support at calcination temperature 550 oC. The average particles diameter of prepared γ-Al2O3 support determined by AFM at calcination temperatures 550, 600, and 750 oC and for prepared nano NiMo/γ-Al2O3 catalyst at calcination temperature 550 oC.


Article
Photocatlytic oxidation of congo red dye by using Co2O3–Cr2O3 as a Photocatalyst

Author: Alaa R. Amrin
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2016 Volume: 2 Issue: 2 Pages: 66-74
Publisher: Babylon University جامعة بابل

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Abstract

Homogeneous crystalline chromium and cobalt oxides (Cr2O3- Co2O3) was prepared by co-precipitation method by mixing metals nitrate in the basic medium and the precipitate was calcinated at 700 C for 6 hrs. The crystalline structure of the synthesized products were analyzed by X-ray diffraction (XRD). The obtained XRD patterns of specimens revealed formation of a well-crystallized structure of double oxides after calcination at 700 C. The photocatalytic activity of double prepared oxides was investigated via following removal of congo red dye from the aqueous solution upon irradiation of reaction suspension under irradiation with UV light.

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