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DRIFTS/pyrometer-DTA—a novel simultaneous method in heterogeneous catalysis
Measurement Science and Technology, 2005This work presents a novel simultaneous method: by coupling a pyrometer—a contactless temperature sensor—to an existing DRIFTS setup such a combination was applied for the first time. During temperature-programmed reduction of silver carbonate with ethylene (as an example), pyrometrically detected processes could be assigned to spectroscopically ...
A Griebel +4 more
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1974
Many crystalline substances show at distinct temperatures spontaneous, reversible structural transformations, the existence and temperatures of which can be observed very clearly in a DTA curve. However, the nature of the resulting products of reaction remains obscure, since these transformations receded during cooling.
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Many crystalline substances show at distinct temperatures spontaneous, reversible structural transformations, the existence and temperatures of which can be observed very clearly in a DTA curve. However, the nature of the resulting products of reaction remains obscure, since these transformations receded during cooling.
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Studying salt systems with “wedged - out” compounds by DTA method
Thermochimica Acta, 1985Abstract A wide application of differential-thermal analysis in studying heterogeneous equilibriums in polycomponent systems made it possible to single out a number of diagrams of state, which reveal lack of the phase of the similarly melting compound in b completely crystallized alloy. It led to the conclusion that traditional means of triangulation
A.S. Kosmynin +4 more
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Oxidation stability of polymeric materials dynamic DSC/DTA method
Journal of Thermal Analysis, 1982The dynamic DSC/DTA method was observed to give better selectivity and reproducibility than the isothermal method when estimating relative oxidation stability of plastics materials. The dynamic DSC/DTA method is in this survey exposed to a round robin test.
L. Koski, K. Saarela
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The acidity of dealuminated clinoptilolite investigated by DSC, DTA and TG methods
Thermochimica Acta, 1992Abstract Dealuminated NH 4 + -clinoptilolite samples, prepared using (NH 4 ) 2 SiF 6 and calcined at various temperatures, were used for the investigation of acidity properties. The strength of the acid sites was measured by a combination of TG and DSC measurements.
F. Grejták +3 more
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ChemInform Abstract: DTA as a Method of Studying Chemical Reactions at High Pressures.
ChemInform, 1987AbstractTwo DTA techniques which allow to study chemical reactions under high pressure in situ are described.
V. V. AVDEEV, V. Z. MORDKOVICH
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Analysis of Alloys Using DTA and TD Methods with Simultaneous Thermomagnetic Studies
Journal of Thermal Analysis and Calorimetry, 1999A modified thermoanalyzer for investigation ferromagnetic materials as metals and alloys is described. Conventional analog phase detection technique is replaced by specialized digital one which added some new outstanding features of the instrumentation.
P. Myśliński, P. Kamasa, J. Vandlik
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A New Isothermal DTA Method for the Study of Surfactants at Liquid Surfaces
1980A new isothermal DTA method for the detection and study of surfactants at the liquid/vapour interface is presented, In this method a certain mass of liquid is slightly superheated above its boiling point in two identical vessels by a constant heat input.
H. K. Cammenga, H.-J. Petrick
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STUDY OF CLATHRATE HYDRATION OF CARBOXYLIC ION EXCHANGER BY DTA METHOD
Solvent Extraction and Ion Exchange, 2000ABSTRACT The effect of ionic composition [(C4H9) 4N-, H + (C4H9)N- and H-forms] and degree of swelling of a polyacrylic ion exchanger on the formation and stability of crystalline clathrate hydrates is studied. The melting temperature of clathrates for ion exchanger in the mixed ion form is to a large extent determined by the ratio of counter-ions. For
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Evaluation of the number density of nuclei in Li2O·2SiO2 glass by DTA method
Journal of Non-Crystalline Solids, 2001Abstract DTA measurements were performed to obtain the crystallization peak temperature, TC, for Li2O·2SiO2 glass heat-treated for nucleation. The relationship between TC and the number density of nuclei was obtained. Calculation of TC was performed by simulating the crystallization process, and the effects of the size and the number density of ...
Takashi Wakasugi +2 more
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