5565
Eman Elsayed Elsayed Ghanaym
Preparation And Characterization Of Layered Double Hydroxides From Some Waste Materials For Ceramic Applications
Layered Double Hydroxides ( LDH) , Waste Materials, aluminium drass
Recently, the synthesis and application of layered double hydroxides (LDHs) have received significant interest. In the present work, none doped and doped LDHs were prepared by co-precipitation followed by hydrothermal treatment method, from different sources e.g. pure chemicals, aluminum dross waste and liquid concentrate waste (LCW). The most interested application of LDHs is ceramic field to produce important category called spinels which have interested properties and applications. For waste materials, aluminum hydroxides and iron oxide hydroxides were firstly extracted. The extracted aluminum hydroxides were used a source of Al ions for production of LDHs. On the other hand, the source of divalent cations was pure chemicals such as magnesium nitrate, cobalt nitrate and nickel nitrate. All synthesized LDHs nano powder and suspensions were investigated by the suitable techniques. The prepared LDHs was calcined, pressed and sintered at 1500oC to produce sintered spinels. The sintered bodies were also examined by the suitable methods. The results revealed that none doped and doped nano LDHs were successfully prepared by the aforementioned method and materials. Also, well densified materials with good properties were produced after sintering at 1500oC. The highest densified materials were spinels doped with nickel prepared from pure chemicals and LCW.
2018
M.Sc
Ain Shams
Science