Precipitation of Modified Nano Molecular Magnesium Oxide from Bittern and Ammonia

被引:5
|
作者
El Rafie, Sh [1 ]
Shalaby, Marwa S. [1 ]
Zaher, Fatma M. [1 ]
Ramadan, Rania [1 ]
Abdel-halim, Tarek A. [2 ]
机构
[1] Natl Res Ctr, Chem Engn & Pilot Plant Dept, El Bohouth St,PO 12622, Giza, Egypt
[2] Nucl Mat Author, Kattamia Rd,POB 530, Maadi, Egypt
来源
EGYPTIAN JOURNAL OF CHEMISTRY | 2019年 / 62卷
关键词
Bittern; Pilot chemical precipitation; PEG; 600; Mg(OH)(2); Crystal structure;
D O I
10.21608/ejchem.2020.14178.1933
中图分类号
O6 [化学];
学科分类号
0703 ;
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 oxygen % 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 degrees C producing flower plates with XRD 2 circle minus = 38.16 degrees.
引用
收藏
页码:229 / 242
页数:14
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