Laser-induced Magnesium Production from Magnesium Oxide for Renewable Magnesium Energy Cycle.

2010 ◽  
Author(s):  
Shi-Hua Liao ◽  
Takashi Yabe ◽  
Choijil Baasandash ◽  
Yuji Sato ◽  
Masashi Ichikawa ◽  
...  
2008 ◽  
Vol 104 (11) ◽  
pp. 113110 ◽  
Author(s):  
M. S. Mohamed ◽  
T. Yabe ◽  
C. Baasandash ◽  
Y. Sato ◽  
Y. Mori ◽  
...  

2013 ◽  
Vol 49 (2) ◽  
pp. 183-190 ◽  
Author(s):  
J. Milshtein ◽  
E. Gratz ◽  
S. Pati ◽  
A.C. Powell ◽  
U. Pal

The Solid Oxide Membrane (SOM) process for magnesium production involves the direct electrolysis of magnesium oxide for energy efficient and low-carbon magnesium production. In the SOM process, magnesium oxide is dissolved in a molten oxy-fluoride flux. An oxygen-ion-conducting SOM tube, made from yttria stabilized zirconia (YSZ), is submerged in the flux. The operating life of the electrolytic cell can be improved by understanding degradation processes in the YSZ, and one way the YSZ degrades is by yttria diffusion out of the YSZ. By adding small amounts of YF3 to the flux, yttria diffusion can be controlled. The diffusion of yttria into the flux was quantified by determining the yttria concentration profile as a function of immersion time in the flux and distance from the flux-YSZ interface. Yttria concentrations were determined using x-ray spectroscopy. The diffusion process was modeled using a numerical approach with an analytic solution to Fick?s second law. These modeling and experimental methods allowed for the determination of the optimum YF3 concentration in the flux to minimize yttria diffusion and improve membrane stability. Furthermore, the effects of common impurities in magnesium ores, such as calcium oxide, silica, and sodium oxide/sodium peroxide, on YSZ stability are being investigated.


2008 ◽  
Vol 36 (APLS) ◽  
pp. 1199-1202
Author(s):  
Mohamed S. MOHAMED ◽  
Takashi YABE ◽  
Choijil BAASANDASH ◽  
Yuji SATO ◽  
Yuichi MORI ◽  
...  

2008 ◽  
Author(s):  
Y. Sato ◽  
T. Yabe ◽  
Y. Sakurai ◽  
M. S. Mohamed ◽  
S. Uchida ◽  
...  

2012 ◽  
pp. 55-58 ◽  
Author(s):  
Yabe Takashi ◽  
Ohkubo Tomomasa ◽  
Dinh Thanh Hung ◽  
Kuboyama Hiroki ◽  
Nakano Junichi ◽  
...  

2010 ◽  
Vol 38 (3) ◽  
pp. 202-206
Author(s):  
Shi-Hua LIAO ◽  
Takashi YABE ◽  
Mohamed S. MOHAMED ◽  
Choijil BAASANDASH ◽  
Yuji SATO ◽  
...  

2019 ◽  
Vol 4 (5) ◽  
pp. 939-953 ◽  
Author(s):  
Adrian Coray ◽  
Zoran R. Jovanovic

This work identifies MgO dissociation and reduction with CO as parallel pathways of Mg production via carbothermic reduction of MgO.


2012 ◽  
pp. 55-58
Author(s):  
Yabe Takashi ◽  
Ohkubo Tomomasa ◽  
Dinh Thanh Hung ◽  
Kuboyama Hiroki ◽  
Nakano Junichi ◽  
...  

Author(s):  
P. L. Burnett ◽  
W. R. Mitchell ◽  
C. L. Houck

Natural Brucite (Mg(OH)2) decomposes on heating to form magnesium oxide (MgO) having its cubic ﹛110﹜ and ﹛111﹜ planes respectively parallel to the prism and basal planes of the hexagonal brucite lattice. Although the crystal-lographic relation between the parent brucite crystal and the resulting mag-nesium oxide crystallites is well known, the exact mechanism by which the reaction proceeds is still a matter of controversy. Goodman described the decomposition as an initial shrinkage in the brucite basal plane allowing magnesium ions to shift their original sites to the required magnesium oxide positions followed by a collapse of the planes along the original <0001> direction of the brucite crystal. He noted that the (110) diffraction spots of brucite immediately shifted to the positions required for the (220) reflections of magnesium oxide. Gordon observed separate diffraction spots for the (110) brucite and (220) magnesium oxide planes. The positions of the (110) and (100) brucite never changed but only diminished in intensity while the (220) planes of magnesium shifted from a value larger than the listed ASTM d spacing to the predicted value as the decomposition progressed.


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