The polymer plays the role of binder in ceramic green body that is why it must be removed from the element to achieve fully densified, polycrystalline ceramic body [ 18 ]. The polymer is removed by its thermaldecomposition during debinding process
Authors:R. Kusiorowski, T. Zaremba, J. Piotrowski, and J. Adamek
Similar to the clay minerals [ 29 , 30 ], thermaldecomposition of asbestos minerals generally takes place according to three stages [ 7 , 31 ]. The first is associated with the loss of adsorbed water. The next step is connected to the removal of
Authors:B. Hefczyc, T. Siudyga, J. Zawadiak, and A. Mianowski
decompose, while at higher temperatures, the peroxyester fragments break down [ 5 ]. N 2 is released in the first stage and CO 2 in the second (Scheme 2 ).
Thermaldecomposition pathways of azo
Authors:Juliusz Leszczynski, Krzysztof T. Wojciechowski, and Andrzej Leslaw Malecki
Thermaldecomposition and oxidation studies and the decomposition and oxidation products analysis
The dense (99.8%), polycrystalline samples of CoSb 3 were thermally treated under vacuum of 10 −3 Pa in sealed
Authors:A. Czylkowska, D. Czakis-Sulikowska, A. Kaczmarek, and M. Markiewicz
This work is a continuation of our previous studies on synthesis, properties, and thermaldecomposition of metal complexes with bipyridine isomers and carboxylates [ 1 – 7 ]. Lanthanide compounds are curious for
transition metal ions with organic ligands, it is customary to investigate the thermaldecomposition of these complexes so as to obtain useful data on the metal–ligand bonds [ 2 – 4 ] and stability trends. The thermal investigations on some derivatives of
of such compounds should be possible simple and low-priced. The obtained compounds should be also thermal stable what is associated with conditions of medicine production processes. In addition, the thermaldecomposition of magnesium coordination
Two types of ammonium uranyl nitrate (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3, were thermally decomposed and reduced in a TG-DTA unit in nitrogen, air, and hydrogen atmospheres. Various intermediate
phases produced by the thermal decomposition and reduction process were investigated by an X-ray diffraction analysis and
a TG/DTA analysis. Both (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3 decomposed to amorphous UO3 regardless of the atmosphere used. The amorphous UO3 from (NH4)2UO2(NO3)4·2H2O was crystallized to γ-UO3 regardless of the atmosphere used without a change in weight. The amorphous UO3 obtained from decomposition of NH4UO2(NO3)3 was crystallized to α-UO3 under a nitrogen and air atmosphere, and to β-UO3 under a hydrogen atmosphere without a change in weight. Under each atmosphere, the reaction paths of (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3 were as follows: under a nitrogen atmosphere: (NH4)2UO2(NO3)4·2H2O → (NH4)2UO2(NO3)4·H2O → (NH4)2UO2(NO3)4 → NH4UO2(NO3)3 → A-UO3 → γ-UO3 → U3O8, NH4UO2(NO3)3 → A-UO3 → α-UO3 → U3O8; under an air atmosphere: (NH4)2UO2(NO3)4·2H2O → (NH4)2UO2(NO3)4·H2O → (NH4)2UO2(NO3)4 → NH4UO2(NO3)3 → A-UO3 → γ-UO3 → U3O8, NH4UO2(NO3)3 → A-UO3 → α-UO3 → U3O8; and under a hydrogen atmosphere: (NH4)2UO2(NO3)4·2H2O → (NH4)2UO2(NO3)4·H2O → (NH4)2UO2(NO3)4 → NH4UO2(NO3)3 → A-UO3 → γ-UO3 → α-U3O8 → UO2, NH4 UO2(NO3)3 → A-UO3 → β-UO3 → α-U3O8 → UO2.
Authors:D. Wyrzykowski, E. Hebanowska, G. Nowak-Wiczk, M. Makowski, and L. Chmurzyński
, citric acid is removable by either heat treatment or thermaldecomposition, without affecting the properties of a material [ 6 – 8 ].
Barbooti and Al-Sammerrai [ 9 ] reported on the thermaldecomposition of citric acid. As stated, the