The complex thermal analysis was used in the investigations of the carbonate reaction products in the residue after Al leaching
from calcium aluminate-12CaO7Al2O3 and Selfdisintegrated Powder. The conversion of Al was calculated basing on a content of Al in the pregnant solution as well
as in a residue obtained from the kinetic investigations. The third method of measurements of a conversion of Al was presented
and discussed. Results show, that the proposed method can be used for conversion estimations with 95% of confidence level
as well as for the detection of carbonate products and is useful for an interpretation of the new approach for kinetic mechanism
of Al leaching.
Iron(II), cobalt(II) and nickel(II) oxalates were synthesized as nanofractals inside the voids of the photonic crystals based
on SiO2. Guest substances undergone polythermic decomposition within the pores of the photonic crystals in helium atmosphere containing
of oxygen traces (∼1 Pa) under static conditions. Pyrolysis of Fe(COO)2·2H2O, Co(COO)2·2H2O and Ni(COO)2·2H2O studied by TG and DSC techniques results in the formation of the metal oxides. The nanoparticles of Fe2O3, CoO (Co3O4) and NiO populated the interspheric voids of the photonic crystals exhibited no ferromagnetic effects indicating that no
metallic inclusions were formed in helium in the presence of O2 traces. The exothermic effect was observed by the thermal decomposition of the cobalt(II) oxalate only under oxygen lack.
temperatures. The decomposition of oils, challenged by mixing with alumina powder, is either catastrophically or resistively to an extent.
Structures of PFPE lubricant and additives:
The Kaytox® XHT-1000
Authors:D. Bhattacharjya, T. Selvamani, and Indrajit Mukhopadhyay
for the synthesis of other magnesium-based materials [ 2 – 5 ]. Hydromagnesite is also a well-known bridging component in ancient magnesian lime mortars [ 6 ]. Thermal decomposition of hydromagnesite is usually associated with an endothermic break down
Authors:V. Logvinenko, V. Bakovets, and L. Trushnikova
The synthesis of proper nickel hydroxide, suitable for the synthesis of the mentioned mesoporous oxide materials, is an intricate problem. The thermal decomposition of nickel hydroxide is a complex process that includes both the dehydration and
Authors:T. Albu, Silvia Ploştinaru, Luminita Patron, and E. Segal
The authors present the results concerning the thermal behaviour of three polynuclear coordination compounds of Nd(III) and
Co(II) or Fe(III) with triptophan. For the dehydration steps the values of the non-isothermal kinetic parameters have been
Authors:Tiit Kaljuvee, Merli Keelmann, Andres Trikkel, and Rein Kuusik
volatile matter and burning of carbon and, finally, the decomposition of mineral matter. In kinetic calculations, oxidation of lignite and oil shale is described by the first-order kinetics, at that higher activation energy values are obtained at higher