Spectroscopic and Structural Characterization of Thermal Decomposition of γ-Mg(BH4)2: Dynamic Vacuum versus H2 Atmosphere

2015 ◽  
Vol 119 (45) ◽  
pp. 25340-25351 ◽  
Author(s):  
Jenny G. Vitillo ◽  
Silvia Bordiga ◽  
Marcello Baricco
Keyword(s):  
Thermal Decomposition ◽  
Structural Characterization ◽  
Dynamic Vacuum

Structural characterization of Baiyinhua lignite via direct and thermal decomposition methods

Fuel ◽  
2019 ◽  
Vol 253 ◽  
pp. 1042-1047 ◽  
Author(s):  
Jing-Hui Lv ◽  
Xian-Yong Wei ◽  
Yang-Yang Zhang ◽  
Zhi-Min Zong
Keyword(s):  
Thermal Decomposition ◽  
Structural Characterization ◽  
Decomposition Methods

The structural characterization of (NH4)2B10H10 and thermal decomposition studies of (NH4)2B10H10 and (NH4)2B12H12

2012 ◽  
Vol 37 (5) ◽  
pp. 4267-4273 ◽  
Author(s):  
Teshome B. Yisgedu ◽  
Zhenguo Huang ◽  
Xuenian Chen ◽  
Hima K. Lingam ◽  
Graham King ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Structural Characterization

Framework Stoichiometry and Electrical Conductivity of Si-Ge Based Structure-I Clathrates

2000 ◽  
Vol 626 ◽  
Author(s):  
Ganesh K. Ramachandran ◽  
Paul F. McMillan ◽  
Jianjun Dong ◽  
Jan Gryko ◽  
Otto F. Sankey
Keyword(s):  
Electrical Conductivity ◽  
Thermal Decomposition ◽  
Electronic Properties ◽  
Lattice Constant ◽  
Structural Characterization ◽  
Periodic Table ◽  
Preliminary Results ◽  
Tetrahedral Sites ◽  
Semiconducting Behavior

ABSTRACTWe report the synthesis and structural characterization of two Structure I clathrates in the KSi and Rb-Si systems. The alkali-Si clathrates are fully stoichiometric at the framework sites, i.e., devoid of framework vacancies. This is in sharp contrast to the analogous K-Ge, Rb-Ge and Rb-Sn, Cs-Sn systems, where vacancies are formed at one-third of the crystallographic 6c tetrahedral sites. This is rationalized in terms of Zintl-Klemm rules to remove the tetrahedral atom of its hypervalency. The contrasting behavior is understood in terms of weaker Tt-Tt (Tt – tetrelide, Si, Ge, Sn) bonding as one descends the periodic table, and results in poorly metallic conductivities for vacancy-free K7Si46 and Rb6Si46, but semiconducting behavior of K8Ge44. The observation suggests tuning of the electronic properties of Tt clathrates by substitution of (Si,Ge,Sn) on framework sites, for thermoelectric applications. We describe preliminary results designed to synthesize “mixed” Si-Ge clathrate structures. Thermal decomposition of K2SiGe results in formation of a Structure I clathrate with mixing of Si and Ge on framework sites. The lattice constant ao = 10.523(6) Å, is intermediate between those of K8Si46 and K8Ge44.

scholarly journals Structural characterization of mullites synthesized by thermal decomposition of topaz

2007 ◽  
Vol 10 (1) ◽  
pp. 75-78 ◽  
Author(s):  
Robson de Miranda Soares ◽  
Antônio Claret Soares Sabioni ◽  
Inês Sabioni Resck ◽  
Viviane Aparecida Silva Falcomer ◽  
José Alves Dias ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Structural Characterization

ChemInform Abstract: New Syntheses and Structural Characterization of NH3BH2Cl and (BH2NH2)3and Thermal Decomposition Behavior of NH3BH2Cl.

ChemInform ◽  
2013 ◽  
Vol 44 (12) ◽  
pp. no-no
Author(s):  
Hima K. Lingam ◽  
Cong Wang ◽  
Judith C. Gallucci ◽  
Xuenian Chen ◽  
Sheldon G. Shore
Keyword(s):  
Thermal Decomposition ◽  
Structural Characterization ◽  
Thermal Decomposition Behavior ◽  
Decomposition Behavior
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