scholarly journals Inhibition of the Vapor-Mediated Phase Transition of the High Temperature Form of Pyrazinamide

2018 ◽  
Vol 18 (2) ◽  
pp. 1109-1116 ◽  
Author(s):  
M. M. H. Smets ◽  
G. Baaklini ◽  
A. Tijink ◽  
L. Sweers ◽  
C. H. F. Vossen ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Temperature Form ◽  
High Temperature Form

The Application of X-Ray Diffraction at Elevated Temperatures to Study the Mechanism of Formation of Sodium Tripolyphosphate

1961 ◽  
Vol 5 ◽  
pp. 276-284
Author(s):  
E. L. Moore ◽  
J. S. Metcalf
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Amorphous Phase ◽  
Elevated Temperatures ◽  
Sodium Tripolyphosphate ◽  
X Ray Diffraction ◽  
Mechanism Of Formation ◽  
X Ray ◽  
Temperature Form ◽  
High Temperature Form

AbstractHigh-temperature X-ray diffraction techniques were employed to study the condensation reactions which occur when sodium orthophosphates are heated to 380°C. Crystalline Na4P2O7 and an amorphous phase were formed first from an equimolar mixture of Na2HPO4·NaH2PO4 and Na2HPO4 at temperatures above 150°C. Further heating resulted in the formation of Na5P3O10-I (high-temperature form) at the expense of the crystalline Na4P4O7 and amorphous phase. Crystalline Na5P3O10-II (low-temperature form) appears after Na5P3O10-I.Conditions which affect the yield of crystalline Na4P2O7 and amorphous phase as intermediates and their effect on the yield of Na5P3O10 are also presented.

High-temperature form of neodymium orthoborate, NdBO3

2006 ◽  
Vol 62 (11) ◽  
pp. i228-i230 ◽  
Author(s):  
Samuel Noirault ◽  
Olivier Joubert ◽  
Maria Teresa Caldes ◽  
Yves Piffard
Keyword(s):  
High Temperature ◽  
Temperature Form ◽  
High Temperature Form
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