scholarly journals Facile preparation of β-/γ-MgH2 nanocomposites under mild conditions and pathways to rapid dehydrogenation

2016 ◽  
Vol 18 (15) ◽  
pp. 10492-10498 ◽  
Author(s):  
Xuezhang Xiao ◽  
Zhe Liu ◽  
Sina Saremi-Yarahmadi ◽  
Duncan H. Gregory
Keyword(s):  
Hydrogen Release ◽  
Chemical Route ◽  
Mild Conditions ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Facile Preparation ◽  
Rapid Kinetics

A γ-MgH2/β-MgH2 nanocomposite can be synthesized via a simple wet chemical route with THF, releasing 6.6 wt% H2 with rapid kinetics; initial hydrogen release arises either directly from meta-stable γ-MgH2 or immediately following its transformation into β-MgH2.

Structures of chemically stabilized ceramics

1993 ◽  
Vol 51 ◽  
pp. 924-925
Author(s):  
Pratibha L. Gai ◽  
M. A. Saltzberg ◽  
L.G. Hanna ◽  
S.C. Winchester
Keyword(s):  
High Temperature ◽  
Calcium Nitrate ◽  
Nitrate Hexahydrate ◽  
Chemical Route ◽  
Cubic Form ◽  
Tetragonal Form ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Final Composition ◽  
Aluminium Nitrate Nonahydrate

Silica based ceramics are some of the most fundamental in crystal chemistry. The cristobalite form of silica has two modifications, α (low temperature, tetragonal form) and β (high temperature, cubic form). This paper describes our structural studies of unusual chemically stabilized cristobalite (CSC) material, a room temperature silica-based ceramic containing small amounts of dopants, prepared by a wet chemical route. It displays many of the structural charatcteristics of the high temperature β-cristobalite (∼270°C), but does not undergo phase inversion to α-cristobalite upon cooling. The Structure of α-cristobalite is well established, but that of β is not yet fully understood.Compositions with varying Ca/Al ratio and substitutions in cristobalite were prepared in the series, CaO:Al2O3:SiO2 : 3-x: x : 40, with x= 0-3. For CSC, a clear sol was prepared from Du Pont colloidal silica, Ludox AS-40®, aluminium nitrate nonahydrate, and calcium nitrate hexahydrate in proportions to form a final composition 1:2:40 composition.

Structural, spectral, electrical and magnetic parameters evaluation of Er3+-substituted Ni0·8Zn0·2Fe2O4 nanoparticles synthesized by wet chemical route

2021 ◽  
Vol 602 ◽  
pp. 412574
Author(s):  
Tahira Akhter ◽  
Muhammad Asif Yousuf ◽  
Muhammad Asghar ◽  
Ibrahim A. Alsafari ◽  
Akmal Jamil ◽  
...  
Keyword(s):  
Chemical Route ◽  
Magnetic Parameters ◽  
Wet Chemical ◽  
Wet Chemical Route

Synthesis and characterization of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 by wet chemical route

Rare Metals ◽  
2009 ◽  
Vol 28 (2) ◽  
pp. 122-126 ◽  
Author(s):  
Xianming Wu ◽  
Runxiu Li ◽  
Shang Chen ◽  
Zeqiang He
Keyword(s):  
Synthesis And Characterization ◽  
Chemical Route ◽  
Wet Chemical ◽  
Wet Chemical Route

Band gap engineering and enhanced photoluminescence of Mg doped ZnO nanoparticles synthesized by wet chemical route

2015 ◽  
Vol 161 ◽  
pp. 275-280 ◽  
Author(s):  
Mohd. Arshad ◽  
Mohd. Meenhaz Ansari ◽  
Arham S. Ahmed ◽  
Pushpendra Tripathi ◽  
S.S.Z. Ashraf ◽  
...  
Keyword(s):  
Band Gap ◽  
Zno Nanoparticles ◽  
Chemical Route ◽  
Band Gap Engineering ◽  
Enhanced Photoluminescence ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Doped Zno ◽  
Mg Doped
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