scholarly journals Determination of Heat of Hydration and Hydration Kinetics of Theophylline by Thermal Analysis.

1998 ◽  
Vol 46 (7) ◽  
pp. 1148-1152 ◽  
Author(s):  
Yasuo YOSHIHASHI ◽  
Midori MAKITA ◽  
Shigeo YAMAMURA ◽  
Eihei FUKUOKA ◽  
Katsuhide TERADA
Keyword(s):  
Thermal Analysis ◽  
Heat Of Hydration ◽  
Hydration Kinetics ◽  
Kinetics Of

The Application of Thermal Analysis to Research on Energetic Materials

2013 ◽  
Vol 750-752 ◽  
pp. 1180-1183
Author(s):  
Tao Zhang ◽  
Ming Hua Chen ◽  
Xiao Biao Jia ◽  
Hao Nan Jia ◽  
Yong Kang Chen
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
High Precision ◽  
Energetic Materials ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Physical Constants ◽  
Kinetics Of

This paper introduces briefly the application of thermal analysis in energetic materials and its importance. Thermal analysis has many advantages: operation is simple and quick, wide fields fit to, the characteristic of the high precision and so on. It plays an important role in the thermal decomposition kinetics of energetic materials, stability and compatibility, and the determination of thermal physical constants.

scholarly journals Determination of the Order of Kinetics of a DTA Curve by Using the Concept of Skewness

2020 ◽  
Vol 36 (6) ◽  
pp. 1235-1239
Author(s):  
BIKASH KUMAR SARKAR ◽  
INDRANIL BHATTACHARYYA ◽  
ANANDA SARKAR ◽  
PARTHA SARATHI MAJUMDAR
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
First Order ◽  
Positive Skewness ◽  
Order Of Kinetics ◽  
Negative Skewness ◽  
Dta Curves ◽  
Dta Curve ◽  
Kinetics Of

In the present paper, a novel way of finding out the order of kinetics of differential thermal analysis (DTA) curves by using the concept of skewness (Sk) has been investigated. It is found that for a particular DTA peak, skewness is a function of both the order of kinetics and the quantity, First order DTA peaks are characterized by negative skewness whereas those for the second order are characterized by positive skewness. Therefore, skewness can be used as an indicator of the order of kinetics of a DTA peak. We have evaluated and compared the orders of kinetics of some reported DTA peaks using the concept of skewness and found that the resulting values of the orders of kinetics are in fair agreement with those reported in literature.

scholarly journals Determination of Hydration Kinetics of Sulfaguanidine Anhydrate in Aqueous Solution by Calorimetry.

2000 ◽  
Vol 48 (2) ◽  
pp. 208-210
Author(s):  
Yasuo YOSHIHASHI ◽  
Etsuo YONEMOCHI ◽  
Midori MAKITA ◽  
Shigeo YAMAMURA ◽  
Eihei FUKUOKA ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydration Kinetics ◽  
Kinetics Of

Zeolites Fit For A Crown: Probing Host-Guest Interactions with Thermogravimetric Methods

2018 ◽  
Author(s):  
Asel Sartbaeva ◽  
Paul R. Raithby ◽  
Remi Castaing ◽  
Antony Nearchou
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Petrochemical Industry ◽  
Rational Use ◽  
New Methodologies ◽  
First Time ◽  
Kinetics Of

Through a combination of thermogravimetry, mass spectrometry and differential thermal analysis, we demonstrate for the first time that all four zeolites show experimental differences in their host-guest interactions with 18C6. In addition, we have estimated the kinetics of 18C6 decomposition, which is a technique that has not been applied to zeolites previously. Using these findings as a toolkit, a more rational use of OSDAs can be utilised to prepare designer zeolites. Furthermore, the new methodologies presented herein can be applied to current zeolites, such as MFI-type zeolites used in the petrochemical industry.

Determination of microbiological activity during the processing of frost damaged sugar beets

2014 ◽  
pp. 228-231 ◽  
Author(s):  
Maciej Wojtczak ◽  
Aneta Antczak-Chrobot ◽  
Edyta Chmal-Fudali ◽  
Agnieszka Papiewska
Keyword(s):  
Sugar Beet ◽  
Microbiological Activity ◽  
Microbiological Contamination ◽  
Sugar Beets ◽  
Bacterial Metabolites ◽  
Kinetics Of

The aim of the study is to evaluate the kinetics of the synthesis of dextran and other bacterial metabolites as markers of microbiological contamination of sugar beet.

Studies on the Behavior Some Paints in Electro-insulating Fluid Based on Vegetable Esters

2018 ◽  
Vol 69 (5) ◽  
pp. 1139-1144
Author(s):  
Iosif Lingvay ◽  
Adriana Mariana Bors ◽  
Livia Carmen Ungureanu ◽  
Valerica Stanoi ◽  
Traian Rus
Keyword(s):  
Structural Changes ◽  
Oxidation Processes ◽  
High Oleic ◽  
Painting Materials ◽  
Insulating Paper ◽  
Different Types ◽  
Mechanism And Kinetics ◽  
Kinetics Of ◽  
Natural Ester

For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid based on the natural ester in contact with copper for electro-technical use and electro-insulating paper). By comparing determination of the content in furans products (HPLC technique) and gases formed (by gas-chromatography) in the electro-insulating fluid (natural ester with high oleic content) thermally aged at 130 �C to 1000 hours in closed glass vessels, it have been found that the presence the investigated painting materials lead to a change in the mechanism and kinetics of the thermo-oxidation processes. These changes are supported by oxygen dissolved in oil, what leads to decrease both to gases formation CO2, CO, H2, CH4, C2H4 and C2H6) and furans products (5-HMF, 2-FOL, 2 -FAL and 2-ACF). The painting materials investigated during the heat treatment applied did not suffer any remarkable structural changes affecting their functionality in the electro-insulating fluid based on vegetable esters.

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