The ways of portrayal of the pressure evolution of the glass temperature (Tg) beyond the dominated Simon–Glatzel-like pattern are discussed. This includes the possible common description of Tg(P) dependences in systems described by dTg/dP>0 and dTg/dP<0. The latter can be associated with the maximum of Tg(P) curve hidden in the negative pressures domain. The issue of volume and density changes ...

Thermo-chemical conversion of cigarette butt filters (CBFs) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- thermophysical properties material were discussed, from the point view chemical structure influence experimental parameters on process. It established that acetyl groups p...

The aim of this paper is to promote thermal analysis as a method for the study archaeological ceramics. In order achieve goal, nature methods (thermal processes, types and their application) described. Specific experimental measurements by simultaneous TG/DTG-DSC ceramic artifacts are also presented.

In gas and liquid phase reactions, the conversion of starting materials to products is directly controlled by rate reaction, whereas in solid state it determined diffusion. When working with thermal analysis methods, tens thousands data be obtained from measured differential (DTA), gravimetry (TG), (DTG) curves must first digitized, then these digitized converted concentrations values using app...

Non-isothermal thermogravimetry/derivative thermogravimetry (TG/DTG) measurements are used to determine pyrolytic characteristics and kinetics of lignocellulose. TG/DTG experiments at different heating rates with corn stover pretreated with monocultures of Irpex lacteus CD2 and Auricularia polytricha AP and their cocultures were conducted. Heating rates had little effect on the pyrolysis proces...

Three Schiff's bases AI (2(1-hydrazonoethyl)phenol), AII (2, 4-dibromo 6-(hydrazonomethyl)phenol) and AIII (2(hydrazonomethyl)phenol) were prepared as new hydrazone compounds via condensation reactions with molar ratio (1:1) of reactants. Firstly by reaction of 2-hydroxy acetophenone solution and hydrazine hydrate; it gives AI. Secondly condensation between 3,5-dibromo-salicylaldehyde and hydra...

In this study, roasted spent Co-Mo/Al2O3 hydrodesulfurization (HDS) catalyst was dissolved in oxalic acid (H2C2O4) solution and optimum conditions were determined for obtaining cobalt oxalate dihydrate (CoC2O4∙2H2O). The thermal decomposition behavior of the obtained CoC2O4∙2H2O investigated by TG/DTG-DTA analysis. characterization carried out XRD, FT-IR SEM-EDS analytical techniques. Optimum p...

This paper describes the synthesis and characterization of the copper (II) complex with the non-steroidal anti-inflammatory drug (NSAID) piroxicam. The characterization was performed by elemental analysis, FTIR spectroscopy, X-ray powder diffraction and thermal investigation. The empirical formulae of the complex, [Cu(PX)2(H2O)2]’ . H2O was determined by the mentioned methods, but especially by...

The kinetics of thermal decomposition of AlIII -, CrIII -, FeIII ,CeIII and LaIII -alginate complexes have been studied using thermogravimetry (TG) and differential thermogravimetry (DTG) techniques in static air. However, the TG curves showed three distinct stages of weight loss, the DTG curves indicated the presence of a series of thermal peaks associated with the TG curves. The results revea...