Enhancement of Lithium Amide to Lithium Imide Transition via Mechanical Activation

2006 ◽  
Vol 110 (41) ◽  
pp. 20710-20718 ◽  
Author(s):  
Tippawan Markmaitree ◽  
Ruiming Ren ◽  
Leon L. Shaw
Keyword(s):  
Mechanical Activation ◽  
Lithium Amide ◽  
Lithium Imide

Enhancement of Lithium Amide to Lithium Imide Transition via Mechanical Activation.

ChemInform ◽  
2007 ◽  
Vol 38 (5) ◽  
Author(s):  
Tippawan Markmaitree ◽  
Ruiming Ren ◽  
Leon L. Shaw
Keyword(s):  
Mechanical Activation ◽  
Lithium Amide ◽  
Lithium Imide

scholarly journals Compositional flexibility in Li-N-H materials: implications for ammonia catalysis and hydrogen storage.

2021 ◽  
Author(s):  
Joshua Makepeace ◽  
Jake M Brittain ◽  
Alisha Sukhwani Manghnani ◽  
Claire Murray ◽  
Thomas J Wood ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrogen Storage ◽  
Compositional Variation ◽  
Lithium Amide ◽  
Lithium Imide ◽  
Energy Storage Applications

Li-N-H materials, particularly lithium amide and lithium imide, have been explored for use in a variety of energy storage applications in recent years. Compositional variation within the parent lithium imide,...

scholarly journals A Mechanism for Nonstoichiometry in the Lithium Amide/Lithium Imide Hydrogen Storage Reaction.

ChemInform ◽  
2007 ◽  
Vol 38 (18) ◽  
Author(s):  
William I. F. David ◽  
Martin O. Jones ◽  
Duncan H. Gregory ◽  
Catherine M. Jewell ◽  
Simon R. Johnson ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Lithium Amide ◽  
Lithium Imide

scholarly journals Ammonia decomposition catalysis using lithium–calcium imide

2016 ◽  
Vol 188 ◽  
pp. 525-544 ◽  
Author(s):  
Joshua W. Makepeace ◽  
Hazel M. A. Hunter ◽  
Thomas J. Wood ◽  
Ronald I. Smith ◽  
Claire A. Murray ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperatures ◽  
Powder Diffraction ◽  
Light Metal ◽  
Reaction Mass ◽  
Ammonia Decomposition ◽  
The Other ◽  
Lithium Amide ◽  
Lithium Imide

Lithium–calcium imide is explored as a catalyst for the decomposition of ammonia. It shows the highest ammonia decomposition activity yet reported for a pure light metal amide or imide, comparable to lithium imide–amide at high temperature, with superior conversion observed at lower temperatures. Importantly, the post-reaction mass recovery of lithium–calcium imide is almost complete, indicating that it may be easier to contain than the other amide–imide catalysts reported to date. The basis of this improved recovery is that the catalyst is, at least partially, solid across the temperature range studied under ammonia flow. However, lithium–calcium imide itself is only stable at low and high temperatures under ammonia, with in situ powder diffraction showing the decomposition of the catalyst to lithium amide–imide and calcium imide at intermediate temperatures of 200–460 °C.

Effects of mechanical activation on dehydrogenation of the lithium amide and lithium hydride system

2008 ◽  
Vol 448 (1-2) ◽  
pp. 263-271 ◽  
Author(s):  
Leon L. Shaw ◽  
Ruiming Ren ◽  
Tippawan Markmaitree ◽  
William Osborn
Keyword(s):  
Mechanical Activation ◽  
Lithium Hydride ◽  
Lithium Amide

A Mechanism for Non-stoichiometry in the Lithium Amide/Lithium Imide Hydrogen Storage Reaction

2007 ◽  
Vol 129 (6) ◽  
pp. 1594-1601 ◽  
Author(s):  
William I. F. David ◽  
Martin O. Jones ◽  
Duncan H. Gregory ◽  
Catherine M. Jewell ◽  
Simon R. Johnson ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Lithium Amide ◽  
Lithium Imide

Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

2019 ◽  
pp. 20-26
Keyword(s):  
Mechanical Activation ◽  
Rice Husk ◽  
Amorphous Silica ◽  
Silicon Oxide ◽  
Rice Husk Ash ◽  
Pozzolanic Activity ◽  
Maximum Solubility ◽  
Laboratory Conditions ◽  
Before And After ◽  
Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

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