Search Results

You are looking at 1 - 10 of 10 items for :

  • "magnesium nitrate" x
  • Refine by Access: All Content x
Clear All

The thermal decompositions of complex compounds of magnesium nitrate, acetate and phosphate with urea, acetamide and formamide ligands were investigated by means of simultaneous TG-DTA. The thermal stabilities of the complexes depend on the natures of the anions and the amide ligands.

Restricted access
Restricted access

Abstract  

The solid-liquid equilibria of the ternary system H2 O-Al(NO3 )3 -Mg(NO3 )2 were studied at 15, 25, 30, 40 and 50C by using a synthetic method which allows to determine all the characteristic points of isothermal sections. In all isotherms the liquidus exhibit two curves corresponding to the saturation in Mg(NO3 )2 ⋅6H2 O and Al(NO3 )3 ⋅9H2 O. Neither double salts nor mixed crystals are observed in the temperature and composition field studied.

Restricted access

Abstract  

The solid—liquid equilibria of the ternary system H2O—Al(NO3)3—Mg(NO3)2 were studied at –30, –20, –10 and 0°C by using a synthetic method which allows to detemine all the characteristic points of isothermal sections. The stable solid phases which appear are respectively: ice, Al(NO3)3·9H2O, Mg(NO3)2·9H2O and Mg(NO3)2·6H2O. Neither double salts nor mixed crystals are observed in the temperature and composition field studied. Polytherm diagram layout show two invariant transformations correspond with an eutectic point and a peritectic point.

Restricted access

the luminous intensity [ 9 ]. In this article, using tetra- n -butyl titanate and magnesium nitrate as the raw materials, a modified solid-state reaction was employed to synthesize the ultra fine phosphors MgTiO 3 :1%Dy, MgTiO 3 :10%Dy, MgTiO 3

Restricted access

Abstract  

Polymorphism and thermal decomposition of [Mg(DMSO)6](NO3)2, where DMSO =(CH3)2SO, were studied by differential scanning calorimetry (DSC) and thermogravimetry (TG). The gaseous products of the decomposition were on-line identified by a quadruple mass spectrometer (QMS). Three phase transitions have been detected for this compound in the temperature range of 95–370 K between the following solid phases: stable KIb↔stable KIa at T C3=195 K, metastable KII↔supercooled K0 at T C2=230 K and stable KIa→stable K0 at T C1=337 K. Thermal decomposition of the title compound proceeds in three main stages. In the first stage, which starts just above ca. 380 K, and is continued up to ca. 540 K, the compound loses in two steps four DMSO molecules per one formula unit and undergoes into [Mg(DMSO)2](NO3)2. The second stage starts just immediately after liberating four DMSO ligands and is connected with the decomposition of [Mg(DMSO)2](NO3)2 and the formation of a mixture of solid anhydrous magnesium sulfate, magnesium nitrate and magnesium oxide and also a mixture of gaseous products of the DMSO and Mg(NO3)2 decomposition. The third and the last stage corresponds to the decomposition of not decomposed yet magnesium nitrate and formation of magnesium oxide, nitrogen oxides and oxygen.

Restricted access

using cerium(III) nitrate hexahydrate, magnesium nitrate hexahydrate as precursors and aqueous ammonia solution as a hydrolyzing agent. The mixture of cations with a molar ratio of Ce 3+ to Mg 2+ = 1:9, 3:7, 5:5, 7:3, and 9:1 is dissolved in 500 ml

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Vittorio Berbenni, Chiara Milanese, Giovanna Bruni, Alessandro Girella, and Amedeo Marini

at temperatures between 900 and 1,400 °C to obtain Mg 2 SnO 4 . Mg 2 SnO 4 has also been prepared by alternative routes. Silva et al. [ 10 ] mixed two solutions: the first one was composed of citric acid and magnesium nitrate while the second

Restricted access

.01.020 . 2. Madarász , J , Varga , PP , Pokol , G . Evolved gas analyses (TG/DTA-MS and TG-FTIR) on dehydration and pyrolysis of magnesium nitrate hexahydrate in air and nitrogen . J Anal Appl Pyrol 2007 79 1–2 475 – 478 10

Restricted access

temperature-programmed reduction (TPR) technique. Experimental Materials 4-Methylpentan-2-ol (analytical grade) and nitric acid (HNO 3 , 63%) were provided by Fluka. Magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O

Restricted access