Evaluation of Iodine-Adsorption on Magnesium Compounds Toward Fixing of Radioactive Iodine

2014 ◽  
Vol 617 ◽  
pp. 201-204
Author(s):  
Naoya Yoshida ◽  
Ryo Kadokura ◽  
Kunio Watanabe ◽  
Keiji Awata ◽  
Akio Ishida ◽  
...  
Keyword(s):  
Surface Area ◽  
Magnesium Oxide ◽  
Radioactive Iodine ◽  
High Surface ◽  
High Surface Area ◽  
Adsorption Method ◽  
Magnesium Compounds ◽  
Iodine Adsorption ◽  
Magnesium Compound

We studied an adsorption method as a technique of collection, and a vitrification method of iodine toward safekeeping. In this study, iodine-adsorptions on magnesium compounds were evaluated, and fixation of iodine into glass was tried. As a result, it was revealed that 1 g of magnesium oxide with high surface area successfully adsorbed 2.23 g of iodine. Iodine-adsorbed magnesium compound was tried to be vitrified with MgO-P2O5 glass.

Hierarchical flowerlike magnesium oxide hollow spheres with extremely high surface area for adsorption and catalysis

2016 ◽  
Vol 4 (2) ◽  
pp. 400-406 ◽  
Author(s):  
Shuliang Yang ◽  
Peipei Huang ◽  
Li Peng ◽  
Changyan Cao ◽  
Yanan Zhu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Surface Area ◽  
Magnesium Oxide ◽  
Heavy Metal Ions ◽  
Catalytic Properties ◽  
Condensation Reaction ◽  
High Surface ◽  
Hollow Spheres ◽  
High Surface Area ◽  
Adsorption Properties

3D hierarchical flowerlike MgO hollow spheres with extremely high surface area showed excellent adsorption properties for heavy metal ions and catalytic properties for the Claisen–Schmidt condensation reaction.

Nanocrystalline ultra high surface area magnesium oxide as a selective base catalyst

2001 ◽  
Vol 44 (8-9) ◽  
pp. 1663-1666 ◽  
Author(s):  
Ryan Richards ◽  
Ravichandra S Mulukutla ◽  
Ilya Mishakov ◽  
Vladimir Chesnokov ◽  
Alexander Volodin ◽  
...  
Keyword(s):  
Surface Area ◽  
Magnesium Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Base Catalyst

scholarly journals Synthesis of high surface area magnesia by using walnut shell as a template

2019 ◽  
Vol 8 (1) ◽  
pp. 199-206 ◽  
Author(s):  
Asghar Zamani ◽  
Ahmad Poursattar Marjani ◽  
Mojtaba Abedi Mehmandar
Keyword(s):  
Surface Area ◽  
Magnesium Oxide ◽  
Aerobic Oxidation ◽  
High Surface ◽  
High Surface Area ◽  
Magnesium Nitrate ◽  
Walnut Shell ◽  
Solid Catalyst ◽  
Loaded Material ◽  
Adsorption Desorption

Abstract In the present study, high surface area amorphous magnesia was synthesized using walnut shell as a template. This green, simple and useful synthetic protocol was based on the precipitation of magnesium nitrate on biomass in an aqueous phase, followed by calcination. Materials were characterized using X-ray diffraction, scanning electron microscopy (SEM) and N2 adsorption/desorption porosimetry, and the results exhibited high surface area for magnesium oxide. Furthermore, the pore size and surface area of these mesoporous materials can be adjusted by varying the biomass/magnesium nitrate ratio. In addition, magnesium oxide was studied as the support of palladium nanoparticles for the aerobic oxidation of alcohols. We have found out that the resulting Pd-loaded material acts as an effective catalytic system for the aerobic oxidation of benzylic and aliphatic alcohols. The catalyst can be recovered and reused three times without loss of activity. Also, to test the catalytic activity of magnesium oxides as a solid catalyst, we selected Meerwein-Ponndorf-Verley reduction of cyclohexanone with 2-propanol over different magnesium oxides.

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