Physicochemical properties of pseudobrookite Fe2TiO5 synthesized from ilmenite ore by co-precipitation route

• Autorzy: Mahmoud Mohamed H. H. , Hessien Mahmoud M. , Alhadhrami Abdulrahman , Gobouri Adel A.

Identyfikatory

DOI

10.5277/ppmp18131

• Języki publikacji: EN

Abstrakty

EN

Pseudobrookite (Fe2TiO5) is a semiconductor with numerous potential applications. Low-grade ilmenite ore has been used as an inexpensive source of Fe and Ti for preparation of Pseudobrookite. Ilmenite was first leached with 20% hydrochloric acid for 3 h at 70°C. Co-precipitation of soluble Fe and Ti from the rich filtrate was carried out at pH ≥ 9.1 followed by calcination at different temperatures (900-1300oC) for 2 h. X-ray diffraction patterns (XRD) showed that a single-phase nanocrystalline pseudobrookite powder was produced. The pH was a critical parameter for the evolution of formation the different sizes, structural morphology, and the magnetic properties of the product. Scanning electron microscope (SEM) images showed that particles synthesized at pH 11.2 contained more agglomerations and were more porous than those synthesized at pH 9.1. As the calcination temperature increases, the Fe2TiO5 changes from a small rod-like structure to an elongated rod-like structure, and finally to interconnected aggregated crystals. The magnetization of the synthesized Fe2TiO5 was measured using a vibrating sample magnetometer (VSM) and was found steadily increase with increasing calcination temperature from 1000 (≈9 emu/g) to 1300°C (16 emu/g). Such a large saturation of magnetization might be due to the high phase purity and well-defined crystallinity of Fe2TiO5.

Słowa kluczowe

EN

ilmenite ore; pseudobrookite; Co-precipitation; nanocrystalline; magnetic properties

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 1
• Strony: 290--300
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Mahmoud Mohamed H. H.

• Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
• Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, Egypt

autor

Hessien Mahmoud M.

• Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
• Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, Egypt

autor

Alhadhrami Abdulrahman

• Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia

autor

Gobouri Adel A.

• Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).