7789-41-5Relevant articles and documents
Phase diagram study of CaBr2-CaHBr system
Vishnu Vardhan, Chilakapati Venkata,Ghosh, Sajal,Nagaraj, Subramaniam,Sridharan, Raghavachary,Gnanasekaran, Thiagarajan
, p. 127 - 131 (2013)
A study of binary, CaBr2-CaHBr system was carried out by differential thermal analysis (DTA), covering the composition range from 100 % CaBr2 to 100 % CaHBr between room temperature and 800 C. From DTA results, the contour of solidus
Molar heat capacity measurement of CaHCl and CaHBr
Kumar, S Shyam,Ghosh, Sajal,Sahu, Manjulata,Ganesan, Rajesh
, (2019)
Abstract: Molar heat capacities of two hydride ion conductors, namely, CaHCl and CaHBr, were measured by differential scanning calorimetry. The measured molar heat capacity data of these compounds as a function of temperature is given by the following expressions:Cp (J K?1 mol?1) = 57.806 + 16.420 × 10?3.T ? 1.006 × 106.T?2Cp (J K?1 mol?1) = 56.534 + 44.880 × 10?3.T ? 1.481 × 106.T?2From the above expressions, molar enthalpy increments, entropies and Gibbs energy functions of these compounds were derived and reported. Graphic abstract: SYNOPSIS CaHCl and CaHBr are hydride ion conducting solid electrolytes find application in electrochemical hydrogen meter to determine dissolved hydrogen concentration in liquid sodium. Heat capacity of CaHCl and CaHBr were measured using DSC and reported.[Figure not available: see fulltext.]
Differential thermal analysis under quasi-isothermal, quasi-isobaric conditions (Q-DTA) Part II. Water evaporation and the decomposition mechanism of compounds with structural and crystal water
Paulik,Bessenyey-Paulik,Walther-Paulik
, p. 75 - 82 (2004)
It is already a generally accepted opinion today that the course of DTA, DSC and TG curves is deteriorated by the non-isothermal heating control and by other experimental conditions to such an extent that it is more characteristic for the experimental conditions, than for the transformation itself. This problem can be eliminated completely by the simultaneous use of transformation-governed heating control (TGHC) and self-generated atmosphere (SGA) ensuring quasi-isothermal, quasi-isobaric conditions for the DTA measuring technique (Q-DTA). This experience is proven on the examples of the evaporation of water under boiling, the dehydration of Ca(OH)2, CuSO4·5H2O, CaBr2·6H2O, Mg(OH)2 and CaSO 4·2H2O by providing both, the results obtained by the DTA, TG and the Q-DTA measuring techniques.
Studies on the phase diagram of CaCl2-CaBr2 system
Ghosh, Sajal,Sridharan,Gnanasekaran
, p. 69 - 72 (2010)
A study on pseudo-binary CaCl2-CaBr2 system was carried out using differential thermal analysis (DTA) technique covering the complete composition range of the constituents between room temperature and 1073 K. From the DTA results the contour of solidus and liquidus temperatures with composition are plotted and the phase diagram of CaCl2-CaBr 2 system is constructed. The solidus and liquidus curves exhibit a minimum at 971K and at a composition of 56.5 mol% CaBr2. Below 971 K, the system exhibits complete solid solution. Long-term equilibration of samples of several compositions was carried out at 923 and 673K and the phases were characterized by XRD. The XRD results supported solid solution formation in the CaCl 2-CaBr2 system between 673 and 923 K.
Ammonia Absorption on Alkaline Earth Halides as Ammonia Separation and Storage Procedure
Liu, Chun Yi,Aika, Ken-Ichi
, p. 123 - 131 (2007/10/03)
For the low pressure ammonia synthesis (～1 MPa, 573-623 K), 40-80 kPa of ammonia produced must be separated. For this purpose, the absorption behavior of five kinds of alkaline earth metal halides (MgCl2, CaCl2, CaBr2, SrC
Studies on ABX6 Compounds. II[1] The BaThBr6 Structure Type
Beck, H. P.,Kuehn, F.
, (2008/10/08)
The compounds AThBr6 (A:Ca, Sr, Ba) crystallize in an ordered substitution variant of the PuBr3 type. Their syntheses and special features of the crystal structures are described.
Process of preparing an amino thiazolyl disulfide using a water soluble salt in combination with wet 2,2-dithiobis(benzothiazole)
-
, (2008/06/13)
In a known process for preparing 2-(4-morpholinodithio)-benzothiazole using 2,2'-dithiobis(benzothiazole) along with morpholine, sulfur, an inert organic solvent such as isopropyl alcohol and an oxidizing agent, the improvement wherein a water soluble salt in combination with wet 2,2'-dithiobis(benzothiazole) is substituted for dry 2,2'-dithiobis(benzothiazole).
