镁
降水
氨
纳米-
氧化物
材料科学
无机化学
化学
冶金
有机化学
气象学
物理
复合材料
作者
Shadia Hanem El Rafie,Marwa Shalaby,Fatma Zaher,Rania Abuel Aila,Tarek A. Abdel-halim
出处
期刊:Egyptian Journal of Chemistry
日期:2019-12-01
卷期号:62 (1): 4-58
被引量:5
标识
DOI:10.21608/ejchem.2020.14178.1933
摘要
Pilot scale magnesium hydroxide was precipitated by ammonia solution and concentrated bittern of 58 Mg2+ g/L . The effect of poly-ethylene glycol (600)PEG and ethylene glycol EG in crystalline size of Mg(OH)2 was investigated through X-ray diffraction(XRD). To confirm the presence of functional groups introduced by modifiers the samples were subjected to Fourier transforms infrared spectroscopy (FTIR). Morphology properties of the selected samples were characterized by SEM images and EDX analysis confirmed the low carbon content and high oxyen % in product with Poly ethylene glycol (PEG). Thermal Gravimetric Analysis (TGA) and (DSC) were used to investigate PEG different ratios effect on Mg(OH)2 crystallite and stability of product. The PEG 0.5% ratio addition shows the best sample properties in all analysis. Pure Nano- magnesium hydroxide was prepared by calcination at 500 ᵒC producing flower plates with XRD 2Ɵ= 38.16 ᵒ Key words: Bittern, Pilot chemical precipitation, PEG 600, Mg(OH)2, crystal structure.
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