scholarly journals Effect of different parameters on caustic magnesia hydration and magnesium hydroxide rheology: a review

2021 ◽  
Author(s):  
Ghada Bassioni ◽  
Reham Farid ◽  
Mayar Mohamed ◽  
Rawia M. Hammouda ◽  
Fritz E. Kühn
Keyword(s):  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Industrial Applications ◽  
Caustic Magnesia

Magnesium oxide and magnesium hydroxide are two compounds that have favorable properties leading to their use in many industrial applications.

Solution-Based Synthesis of Magnesium Oxide Nanorods

1999 ◽  
Vol 581 ◽  
Author(s):  
Q. Wei ◽  
C.M. Lieber
Keyword(s):  
Electron Microscopy ◽  
Magnesium Oxide ◽  
Magnesium Chloride ◽  
Low Cost ◽  
Industrial Applications ◽  
Transformation Process ◽  
Matrix Composites ◽  
X Ray ◽  
Transmission Electron ◽  
Oxide Nanorods

ABSTRACTA solution-based synthesis route was developed to produce large quantities of MgO nanorods. Hydrated basic magnesium chloride, which has needle-like crystal structure, was used as a precursor. A subsequent two-step transformation process with magnesium hydroxide as an intermediate product was used to preserve the morphology of the precursor to yield magnesium oxide nanorods. Scanning electron microscopy, powder X-ray diffraction and energy dispersive X-ray spectroscopy show that the products are very pure (>95%) crystalline MgO nanorods with diameters from 40 nm to 200 nm and lengths 10 microns or longer. High-resolution transmission electron microscopy and electron diffraction further reveal that these MgO nanorods are single crystals and that the rod axis is along the <110> crystal direction. A model for the structural transformation from hydrated basic magnesium chloride to magnesium oxide has been developed and compared to our experimental results. This solution-based process can be easily scaled-up, and is a low-cost source of pure magnesium oxide nanorods needed in many industrial applications, for example, as reinforcing agents in matrix composites and as flux-pinning centers in high-TC superconductors.

A comparative study on magnesium hydroxide and magnesium oxide nanostructures

2019 ◽  
Author(s):  
Neha Rani ◽  
Surjeet Chahal ◽  
Parmod Kumar ◽  
Rajni Shukla ◽  
S. K. Singh
Keyword(s):  
Comparative Study ◽  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Oxide Nanostructures

Nanoscale Magnesium Hydroxide and Magnesium Oxide Powders:  Control over Size, Shape, and Structure via Hydrothermal Synthesis

2001 ◽  
Vol 13 (2) ◽  
pp. 435-440 ◽  
Author(s):  
Yi Ding ◽  
Guangtao Zhang ◽  
Hao Wu ◽  
Bin Hai ◽  
Liangbin Wang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Oxide Powders

A comparison of carbon footprints of magnesium oxide and magnesium hydroxide produced from conventional processes

2018 ◽  
Vol 202 ◽  
pp. 1035-1044 ◽  
Author(s):  
Van-Tri Luong ◽  
Rose Amal ◽  
Jason Anthony Scott ◽  
Simone Ehrenberger ◽  
Tam Tran
Keyword(s):  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Carbon Footprints

The decomposition of magnesium hydroxide in an electron microscope

1958 ◽  
Vol 247 (1250) ◽  
pp. 346-352 ◽  
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Electron Diffraction ◽  
Single Crystals ◽  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Basal Plane ◽  
Morphological Changes ◽  
Water Molecules ◽  
Two Stages

The beam of an electron microscope has been used to dehydrate single crystals of magnesium hydroxide to magnesium oxide. Electron diffraction photographs and electron micrographs were taken at various stages to follow the crystallographic and morphological changes which accompany decomposition. The decomposition may be considered to occur in two stages. First, there is a small shrinkage in the basal plane, and the resulting strain causes a maze of cracks in the crystal. This change is followed by a collapse of the planes down the original [0001] of magnesium hydroxide. The collapse is controlled by the migration of water molecules from between the planes to a surface where they can escape. The product is a highly oriented aggregate of micro-crystallites of magnesium oxide. More intense irradiation in the electron beam occasionally causes bulk movement of the solid.

Rod-like morphological magnesium hydroxide and magnesium oxide via a wet coprecipitation process

2007 ◽  
Vol 16 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Dehong Chen ◽  
Lunyu Zhu ◽  
Peng Liu ◽  
Huaiping Zhang ◽  
Kai Xu ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Magnesium Hydroxide ◽  
Coprecipitation Process
Sign in / Sign up

Export Citation Format

Share Document