Synthesis, identification and thermal decomposition of double sulfates of Mn, Cu and Cd with benzylammonium

V. Jordanovska, B. Boyanov, Pance Naumov

Research output: Contribution to journalConference article

Abstract

On evaporation of an aqueous mixture of M(II) sulfate (M(II) = Mn, Co, Ni, Cu, Zn or Cd) and benzylammonium sulfate in a molar ratio of 1:2 at room temperature in the presence of sulphuric acid, double sulfates of only Mn, Cu and Cd were obtained. The stoichiometries of the compounds were determined by means of elemental and TG analysis. It was concluded that these compounds have the same general formula: M(C6H5CH2NH3)2(SO4)2·4H2O. These compounds have the same stoichiometry as that of the corresponding double sulfates with ethanolammonium cation, but have different crystal structures. The thermal decompositions of the investigated compounds in the temperature range from ambient temperature up to 1000 °C take place in a similar way, in three well-differentiated stages, but with different pathways in the second and third stages. Metal oxides were obtained as final products.

Original languageEnglish (US)
Pages (from-to)267-275
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
Volume62
Issue number1
DOIs
StatePublished - Dec 1 2000
Event1st Italian Russian Calorimetry WorkshopNew Trends in Calorimetry and its Applications - Barga, Italy
Duration: Oct 31 1999Nov 3 1999

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Sulfates
thermal decomposition
sulfates
Pyrolysis
decomposition
synthesis
Stoichiometry
stoichiometry
Temperature
Oxides
ambient temperature
metal oxides
Cations
Evaporation
Crystal structure
Metals
evaporation
cations
acids
crystal structure

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Synthesis, identification and thermal decomposition of double sulfates of Mn, Cu and Cd with benzylammonium. / Jordanovska, V.; Boyanov, B.; Naumov, Pance.

In: Journal of Thermal Analysis and Calorimetry, Vol. 62, No. 1, 01.12.2000, p. 267-275.

Research output: Contribution to journalConference article

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N2 - On evaporation of an aqueous mixture of M(II) sulfate (M(II) = Mn, Co, Ni, Cu, Zn or Cd) and benzylammonium sulfate in a molar ratio of 1:2 at room temperature in the presence of sulphuric acid, double sulfates of only Mn, Cu and Cd were obtained. The stoichiometries of the compounds were determined by means of elemental and TG analysis. It was concluded that these compounds have the same general formula: M(C6H5CH2NH3)2(SO4)2·4H2O. These compounds have the same stoichiometry as that of the corresponding double sulfates with ethanolammonium cation, but have different crystal structures. The thermal decompositions of the investigated compounds in the temperature range from ambient temperature up to 1000 °C take place in a similar way, in three well-differentiated stages, but with different pathways in the second and third stages. Metal oxides were obtained as final products.

AB - On evaporation of an aqueous mixture of M(II) sulfate (M(II) = Mn, Co, Ni, Cu, Zn or Cd) and benzylammonium sulfate in a molar ratio of 1:2 at room temperature in the presence of sulphuric acid, double sulfates of only Mn, Cu and Cd were obtained. The stoichiometries of the compounds were determined by means of elemental and TG analysis. It was concluded that these compounds have the same general formula: M(C6H5CH2NH3)2(SO4)2·4H2O. These compounds have the same stoichiometry as that of the corresponding double sulfates with ethanolammonium cation, but have different crystal structures. The thermal decompositions of the investigated compounds in the temperature range from ambient temperature up to 1000 °C take place in a similar way, in three well-differentiated stages, but with different pathways in the second and third stages. Metal oxides were obtained as final products.

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