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Journal articles on the topic 'TG/DTA'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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1

Jorda, J. L. "DTA/TG coupling." Journal of Thermal Analysis 48, no. 3 (March 1997): 585–96. http://dx.doi.org/10.1007/bf01979505.

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2

Hatakeyama, Tatsuko. "DSC,DTA,TG." Kobunshi 40, no. 4 (1991): 264–67. http://dx.doi.org/10.1295/kobunshi.40.264.

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3

Sumadiyasa, Made, I. Putu Suardana, and Nyoman Wendri. "DTA-TG Analysis of Gd0.95La0.05Ba1.95Sr0.05Cu3Oy Compounds." BULETIN FISIKA 21, no. 1 (February 1, 2020): 33. http://dx.doi.org/10.24843/bf.2020.v21.i01.p06.

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The sintering temperature is played a vital role in the evolution of phase structure, microstructure, and the properties of the superconductor. In this study, the Gd0.9La0.1Ba1.95Sr0.05Cu3O7-d phase compound has been synthesized by the wet method using HNO3 as a solvent. The samples were divided into two groups. The first sample was calcined at 400 °C for 2 hours + 500 °C for 2 hours + 600 °C for 6 hours. The second sample treated by the same process and then continued by heating at 900 °C for 15 minutes. The effect of the calcination temperature for the synthesis of Gd0.9La0.1Ba1.95Sr0.05Cu3O7-d bulks was investigated using the DTA-TG method. The results showed that the optimum reaction temperature for the formation of Gd0.9La0.1Ba1.95Sr0.05Cu3O7-d phase was 938 °C. The additional heating temperature e.g. 900 °C for 15 minutes on the calcination process can reduce the optimum formation temperature of Gd0.9La0.1Ba1.95Sr0.05Cu3O7-d compounds by 20 °C. The peritectic melting reaction temperatures of the sample without the addition of heating and with the addition of heating at temperature 900 °C for 15 minutes are 1032°C and 1035°C, respectively. The melting temperatures of both samples are 1164 °C and 1200 °C.
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4

SAWADA, Yutaka, Taro SHIGARAKI, Shigeyuki SEKI, Makoto OGAWA, Tetsuya SENDA, Toshikazu NISHIDE, and Jun-ichi MATSUSHITA. "TG-DTA-MS of Indium Acetate." Journal of the Mass Spectrometry Society of Japan 46, no. 4 (1998): 292–95. http://dx.doi.org/10.5702/massspec.46.292.

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5

Brendel, Wulf, Theodoros Samartzis, Claus Brendel, and Bernt Krebs. "TG and DTA investigations on hexaiodometallates." Thermochimica Acta 83, no. 1 (January 1985): 167–72. http://dx.doi.org/10.1016/0040-6031(85)85808-1.

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6

Arii, Tadashi, Yutaka Sawada, Kiyokata Iizumi, Katsuya Kudaka, and Shigeyuki Seki. "TG-DTA-MS of chromium(III) formate." Thermochimica Acta 352-353 (July 2000): 53–60. http://dx.doi.org/10.1016/s0040-6031(99)00437-2.

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7

Dakka, S. M. "TG/DTA/MS of poly(methyl methacrylate)." Journal of Thermal Analysis and Calorimetry 73, no. 1 (2003): 17–24. http://dx.doi.org/10.1023/a:1025165020404.

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8

Dakka, S. M. "TG/DTA/MS of Poly(Methyl Methacrylate)." Journal of Thermal Analysis and Calorimetry 74, no. 3 (2003): 729–34. http://dx.doi.org/10.1023/b:jtan.0000011005.54630.cd.

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9

Poiesz, Kate B., Carol L. Grundner, and Nancy L. Redman-Furey. "Monitoring hydration state conversion by TG-DTA." Journal of Thermal Analysis and Calorimetry 85, no. 1 (July 2006): 79–86. http://dx.doi.org/10.1007/s10973-005-7350-z.

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10

Soares, R. W., V. J. Menezes, M. V. A. Fonseca, and J. Dweck. "Characterization of carbonaceous products by TG and DTA." Journal of thermal analysis 49, no. 2 (August 1997): 657–61. http://dx.doi.org/10.1007/bf01996748.

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11

Siimer, K., P. Christjanson, T. Kaljuvee, T. Pehk, I. Lasn, and I. Saks. "TG-DTA study of melamine-urea-formaldehyde resins." Journal of Thermal Analysis and Calorimetry 92, no. 1 (April 2008): 19–27. http://dx.doi.org/10.1007/s10973-007-8721-4.

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12

Zhong, Zhimin, and P. K. Gallagher. "Temperature calibration of a simultaneous TG/DTA apparatus." Thermochimica Acta 186, no. 2 (September 1991): 199–204. http://dx.doi.org/10.1016/0040-6031(91)87036-v.

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13

Đorđević, Nataša, Slavica Mihajlović, Gvozden Jovanović, and Branislav Marković. "DTA/TG analysis of mechanochemicaly activated sodium carbonate." Podzemni radovi, no. 38 (2021): 47–55. http://dx.doi.org/10.5937/podrad2138047q.

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Sodium carbonate is a material that is very good sorbent of carbon dioxide from the atmosphere, and it is a reason of it is increasing importance in environmental protection. In order to improve it is sorption characteristics, activation of Na2CO3 was performed by mechanochemical procedure and monitoring of changes during the relaxation time. This research is based on differential thermal analysis with thermogravimetry, in order to determine the changes that occurred on the activated samples during the relaxation period under controlled conditions. Sodium carbonate was activated for 2 and 7 minutes in a vibro mill, and then the activated samples were deposited in at room temperature and atmosphere of carbon dioxide at a humidity of 95% for 96h.
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14

Drábik, Milan. "The challenge of methods of thermal analysis in solid state and materials chemistry." Pure and Applied Chemistry 89, no. 4 (April 1, 2017): 451–59. http://dx.doi.org/10.1515/pac-2016-1105.

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Abstract Thermogravimetry (TG) and differential thermal analysis (DTA) are traditional, but still useful, experimental techniques for obtaining information in the realms of materials and solid state chemistry. This paper presents two case studies (many more could be cited) to illustrate the strengths (and limitations) of these techniques: (1) Iron doping of clinoptilolite (the most common zeolite): the typical parameters of both components appear clearly in the TG and DTA curves. The decrease of the Tmax value of the structurally-typical DTA effect of FeOOH by approximately 100°C is attributed to the weakening of chemical bonds in FeOOH due to the incorporation of the doping component into the structure of this zeolite. (2) Macrodefect-free (MDF) materials: the results of both TG and DTA unambiguously locate the typical temperature range of the decomposition of the P{4}–O–Al/Fe{6} cross-links within the interval of 200–300°C. The presence of cross-links is shown by the DTA data while the TG data can be used to measure the degree of cross-linking, which is valuable information when studying both raw mixes and the final materials for a variety of MDF materials.
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15

Charmas, Barbara, Karolina Kucio, Volodymyr Sydorchuk, Svitlana Khalameida, Magdalena Zięzio, and Aldona Nowicka. "Characterization of Multimodal Silicas Using TG/DTG/DTA, Q-TG, and DSC Methods." Colloids and Interfaces 3, no. 1 (December 28, 2018): 6. http://dx.doi.org/10.3390/colloids3010006.

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The formation of hierarchical, multimodal porosity materials with controlled shape and size of pores is the essential challenge in materials science. Properties of silica materials depend largely on different features: crystal structure, dispersity, surface composition, and porosity as well as the method of preparation and possible modification. In this paper, multimodal silicas obtained using different additives are presented. A-50 and A-380 aerosils and wide-porous SiO2 milled at 300 rpm were used as the additives in the sol stage at 20 °C, the sol–gel stage followed by hydrothermal modification (HTT) at 200 °C, or in the mechanochemical treatment (MChT) process. The characterizations were made by application of N2 adsorption/desorption, SEM imaging, quasi-isothermal thermogravimetry (Q-TG), dynamic thermogravimetry/derivative thermogravimetry/differential thermal analysis (TG/DTG/DTA), and cryoporometry differential scanning calorimetry (DSC) methods. Results showed that such a one-step preparation method is convenient and makes it possible to obtain multimodal silicas of differentiated porous structures and surface chemistry.
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16

de la Fuente, José L., Marta Ruiz-Bermejo, César Menor-Salván, and Susana Osuna-Esteban. "Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods." Polymer Degradation and Stability 96, no. 5 (May 2011): 943–48. http://dx.doi.org/10.1016/j.polymdegradstab.2011.01.033.

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17

de la Fuente, José L., Marta Ruiz-Bermejo, César Menor-Salván, and Susana Osuna-Esteban. "Pyrolysis study of hydrophobic tholins By TG-MS, TG, DTA and DSC methods." Journal of Thermal Analysis and Calorimetry 111, no. 3 (January 5, 2012): 1699–706. http://dx.doi.org/10.1007/s10973-011-2141-1.

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18

Setiawan, Adhi, W. Widiyastuti, Sugeng Winardi, and Agung Nugroho. "KINETIKA REAKSI SINTHESIS BIOMATERIAL HIDROXYAPATITE DENGAN JENIS PREKURSOR NITRAT DAN ASETAT." Reaktor 15, no. 2 (February 20, 2014): 104. http://dx.doi.org/10.14710/reaktor.15.2.104-110.

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Hidroxyapatite (HAp) merupakan salah satu biomaterial yang banyak diaplikasikan dalam dunia medis untuk membuat implant jaringan tubuh terutama tulang dan gigi sehingga kemurnian produk HAp memegang peranan yang cukup penting. Agar diperoleh HAp dengan kemurnian tinggi, kinetika reaksi pembentukan HAp harus diketahui secara jelas. Metode yang digunakan untuk memperoleh kinetika reaksi HAp adalah dengan analisis TG-DTA yang dilakukan pada dua jenis prekursor HAp yaitu asetat dan nitrat. Metode TG-DTA tersebut dilakukan dengan memanaskan prekursor HAp dengan variasi laju pemanasan 10, 15, 17, dan 20 oC/menit. Hasil analisis TG-DTA menunjukkan bahwa reaksi dekomposisi prekursor asetat dan nitrat membentuk HAp masing-masing terjadi pada suhu 659 oC dan 560 oC. Hasil fitting parameter kinetika menunjukkan bahwa energi aktivasi pembentukan HAp pada prekursor asetat sebesar 161,56 kJ/mol dengan model kinetika Normal Grain Growth sedangkan pada prekursor nitrat sebesar 374 kJ/mol dengan model kinetika Johnson-Mehl-Avrami. Kata kunci: Biomaterial, hidroxypapatite, Dekomposisi, Energi Aktivasi ABSTRACT KINETIC STUDY OF THE BIOMATERIAS HIDOXYAPATITE SINTHESIS WITH PRECURSOR NITRATE AND ACETATE. Hidroxyapatite (HAp) is one of the biomaterials widely applied in the medical world to make implant tissues of the body, especially bones and teeth so that the purity of the HAp plays a fairly important. In order to obtain high purity HAp, reaction kinetics should be known clearly. TG-DTA is method used to obtain the reaction kinetics of HAp.TG-DTA analyzes were conducted on precursors acetate and nitrate. TG-DTA method is carried out by heating HAp precursor with variation heating rate 10, 15, 17, and 20° C/min respectively. The results of TG-DTA showed decomposition precursor acetate and nitrate formed HAp occurs on temperature 659° C and 560° C respectively. The results of the fitting kinetic showed activation energy of the HAp formation on acetate precursors about 161.56 kJ/mol with Normal Grain Growth kinetic model whereas the nitrate precursor about 374 kJ/mol with Johnson-Mehl-Avrami kinetic model.
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19

Antao, S. M., M. J. Duane, and I. Hassan. "DTA, TG, AND XRD STUDIES OF STURMANITE AND ETTRINGITE." Canadian Mineralogist 40, no. 5 (October 1, 2002): 1403–9. http://dx.doi.org/10.2113/gscanmin.40.5.1403.

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20

Chen, Yong, Shigeikatsu Mori, and Wei-Ping Pan. "Estimating the Combustibility of Various Coals by TG-DTA." Energy & Fuels 9, no. 1 (January 1995): 71–74. http://dx.doi.org/10.1021/ef00049a011.

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21

Sperandeo, N. R., C. V. Mattia, and Maria M. de Bertorello. "Thermal studies of isoxazolylnaphthoquinones by simultaneous DTA-TG-DTG." Journal of thermal analysis 48, no. 2 (February 1997): 267–76. http://dx.doi.org/10.1007/bf01979270.

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22

Todorova, Ek. "TG-DTA determination of water evolved from CaSO4·xH2O." Journal of Thermal Analysis 46, no. 1 (January 1996): 187–92. http://dx.doi.org/10.1007/bf01979958.

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23

Yu, Dawei, and Torstein A. Utigard. "TG/DTA study on the oxidation of nickel concentrate." Thermochimica Acta 533 (April 2012): 56–65. http://dx.doi.org/10.1016/j.tca.2012.01.017.

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24

Shukry, N., and B. S. Girgis. "Acetosolv Lignins from Bagasse: Characterization by TG and DTA." Polymer-Plastics Technology and Engineering 31, no. 5-6 (June 1992): 541–51. http://dx.doi.org/10.1080/03602559208017766.

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25

Collins, WJ, C. DuBois, R. Thomas Cambron, NL Redman-Furey, and AS Bigalow Kern. "Development and Evaluation of a TG/DTA/Raman System." Journal of ASTM International 2, no. 9 (2005): 12789. http://dx.doi.org/10.1520/jai12789.

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26

Salem, A. E., S. S. Younis, A. A. Shabana, and M. M. Misbah. "Thermal study of date kernels via TG and DTA." Journal of Thermal Analysis 35, no. 7 (November 1989): 2243–54. http://dx.doi.org/10.1007/bf01911888.

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27

Charsley, E. L., S. St J. Warne, and S. B. Warrington. "Studies on ICTA reference materials using simultaneous TG-DTA." Thermochimica Acta 114, no. 1 (April 1987): 53–60. http://dx.doi.org/10.1016/0040-6031(87)80240-x.

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28

Rao, U. R. K., A. K. Tyagi, S. J. Patwe, and R. M. Iyer. "TG/DTA evidence of fluorine incorporation into YBa2Cu3O6⋅+δ." Pramana 31, no. 1 (July 1988): L79—L84. http://dx.doi.org/10.1007/bf02846960.

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29

Yunchu, H., Z. Peijang, and Q. Songsheng. "TG-DTA studies on wood treated with flame-retardants." Holz als Roh- und Werkstoff 58, no. 1-2 (June 21, 2000): 35–38. http://dx.doi.org/10.1007/s001070050382.

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30

Fu, Cheng Guo, Shi Bang Ma, Yi Shui Tian, Dang Qin Xue, Lin Hai Zhang, and Shu Lin Hou. "Discussions of Traditional Ignition Temperature Methods with DTA Principle and a New DTG-DTA Method Establishment." Advanced Materials Research 1008-1009 (August 2014): 833–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1008-1009.833.

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Ignition temperature is an important parameter in fuel combustion characteristics research. In this paper, tradition ignition temperature determination methods and their application limitations were discussed by analyzing the DTA curve. All discussions were demonstrated in sweet sorghum fermentation residue particles combustion test. As commonly-used methods were totally established with no consideration of thermal analyzing, the calculating value error were obvious. Taking account detected time tk (uV>0) and delay time() in DTG (derivative thermogravimetry)-DTA (differential thermal analyses) profile, DTG-DTA delay time method was established in this paper. The calculated values comparison has been performed between new method and TG-DTG dividing point method，the latter was recognized as the most accurate method. It was showed that new method has almost the same ignition temperature to that of TG-DTG dividing point method. While new method needs only half workloads of TG-DTG diving point method. The physical conception of new method is clear and corresponded ignition temperature is accurate. Therefore, new method is suitable for biomass ignition temperature determination.
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31

Linghu, Wen Sheng, and Chun Yan Sun. "A Study on the TG/DTA Behavior of Decabromodiphenyl Ether." Advanced Materials Research 850-851 (December 2013): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.850-851.177.

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In this work, the TG/DTA behavior of decabromodiphenyl ether (BDE-209) at nitrogen and air atmosphere by using a thermogravimetric analyzer was investigated. The results showed that both of TG and DTG curves at nitrogen atmosphere are very similarly with that at air atmosphere. About 75 wt% and 25 wt% of total mass loss were observed at the temperature range of about 300-430 °C and about 430-580°C, respectively. It is indicated that the mass loss of BDE-209 during the thermal treamtnet is mainly caused by the evaporation and thermal decomposition.
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32

Deng, Xiao Ling, Dong Jiao Guo, Wei Cai, and Chun Lin Fu. "Barium Zirconium Titanate Powders Prepared by Sol–Gel Method." Advanced Materials Research 412 (November 2011): 86–89. http://dx.doi.org/10.4028/www.scientific.net/amr.412.86.

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Barium zirconium titanate, Ba (Zr0.20Ti0.80)O3(BZT) powders were prepared by sol-gel method. These powders were characterized by thermal gravimetric and differential thermal gravimetric analysis (TG-DTA), X-ray diffraction (XRD). The grain size and lattice constant were determined. The decomposition of the precursors was monitored by TG-DTA. XRD patterns reveal that BZT powders heat-treated at 800°C present single phase with perovskite type cubic structure. The average particle size of the BZT powders is about 25 nm.
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33

SUGIYAMA, Takeshi, Kanji SUGAYA, Masahiro MAENO, and Takeyo TSUKAMOTO. "TG-DTA Study on the High Tc Superconductor YBa2Cu3Ox Ceramics." Journal of the Ceramic Society of Japan 96, no. 1111 (1988): 342–44. http://dx.doi.org/10.2109/jcersj.96.342.

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34

Endoh, Keiichi, and Hiroshi Suga. "Phase diagram of salt–water system determined by TG-DTA." Thermochimica Acta 327, no. 1-2 (March 1999): 133–37. http://dx.doi.org/10.1016/s0040-6031(98)00604-2.

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35

Phang, Pauline. "The analysis of perfume fixatives by simultaneous TG–DTA studies." Thermochimica Acta 340-341 (December 1999): 139–45. http://dx.doi.org/10.1016/s0040-6031(99)00260-9.

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36

Menon, Divya, David Dollimore, and Kenneth S. Alexander. "A TG–DTA study of the sublimation of nicotinic acid." Thermochimica Acta 392-393 (September 2002): 237–41. http://dx.doi.org/10.1016/s0040-6031(02)00106-5.

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37

Charsley, E. L., N. J. Manning, and S. B. Warrington. "A new integrated system for simultaneous TG-DTA-MASS spectrometry." Thermochimica Acta 114, no. 1 (April 1987): 47–52. http://dx.doi.org/10.1016/0040-6031(87)80239-3.

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38

Jasim, Fadhil. "Simultaneous TG, DTG, DTA AND EGA thermoanalysis of hydrazinium sulfate." Thermochimica Acta 125 (March 1988): 237–46. http://dx.doi.org/10.1016/0040-6031(88)87225-3.

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39

Szałkowioz, Małgorzata, and Zdzisław Kubas. "Simultaneous TG-DTG-DTA-EGA analysis for studies of xerogen." Thermochimica Acta 148 (August 1989): 533–40. http://dx.doi.org/10.1016/0040-6031(89)85257-8.

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40

Tõnsuaadu, Kaia, Irma Bogdanoviciene, and Rainer Traksmaa. "Purity test of precipitated apatites by TG/DTA/EGA–MS." Journal of Thermal Analysis and Calorimetry 125, no. 2 (April 18, 2016): 919–25. http://dx.doi.org/10.1007/s10973-016-5447-1.

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41

Petkova, V., V. Stoyanov, and Y. Pelovski. "TG–DTG–DTA in studying white self-compacting cement mortars." Journal of Thermal Analysis and Calorimetry 109, no. 2 (May 4, 2012): 797–806. http://dx.doi.org/10.1007/s10973-012-2447-7.

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42

Meyvel, S., P. Sathya, and G. Velraj. "Thermal characterization of archaeological pot sherds recently excavated in Nedunkur, Tamilnadu, India." Cerâmica 58, no. 347 (September 2012): 338–41. http://dx.doi.org/10.1590/s0366-69132012000300009.

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The archaeological pottery sherds excavated recently in Nedunkur, Tamilnadu, were analysed using Thermogravimetric (TG) and Differential Thermal analysis (DTA) with an objective of identifying the mineralogical characteristics of the raw materials used for their production. Besides, the thermal reactions associated over the linear temperature ramp from room temperature to 1200 °C in an inert atmosphere were also realized by TG-DTA. The characterization studies were able to indicate the conditions of firing process adopted and firing temperature attained by the artisans at the time of manufacture.
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43

Öztürk, Esra. "Photoluminescence Properties of Eu3+-activated Silicate Phosphors." High Temperature Materials and Processes 36, no. 6 (July 26, 2017): 635–40. http://dx.doi.org/10.1515/htmp-2015-0263.

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AbstractThe silicate-type and Eu3+-activated Sr3SiO5 and Mg3SiO5 were prepared through the high temperature solid state reaction method under an open atmosphere. DTA/TG analysis was conducted to obtain information about the thermal behaviors of the mixed reactants. Using the DTA/TG results, the sintering process was achieved and the phase properties were characterized by X-ray diffraction (XRD). The effects of the same activator (Eu3+) and co-dopant (Dy3+) on the photoluminescence (PL) properties of the host lattices were investigated by using a photoluminescence spectrometer.
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44

Zhang, Tao, Long Liu, Yan Qiang Zhang, and Zeng Xi Li. "Synthesis and Crystal Structure of Tridodecylammonium 3,5-Dinitro-1, 2, 4-1H-triazolate (TDADNT)." Advanced Materials Research 881-883 (January 2014): 205–10. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.205.

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Tridodecylammonium 3,5-dinitro-1,2,4-1H-triazolate (TDADNT) was synthesized and characterized by NMR, IR, and Raman spectra, elemental analysis and TG/DTA. Its structure was further confirmed by the single crystal X-ray diffraction (Fig. 2), which shows that the compound crystallizes in the triclinic space group P-1 with a = 8.9507(19) Å, b = 12.702(2) Å, c = 19.068(4) Å, α = 72.440(5) o, β = 89.620(7) o, γ = 84.901(7) o, V = 2058.3(7) Å3, Z = 2. The salt is thermally stable up to 270 °C with the TG/DTA measurements.
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45

Luiz, Jose Marques, and Ronaldo Spezia Nunes. "Synthesis, characterization, and thermal behavior of amidosulfonates of transition metals in air and nitrogen atmosphere." Eclética Química Journal 45, no. 4 (October 1, 2020): 32–39. http://dx.doi.org/10.26850/1678-4618eqj.v45.4.2020.p32-39.

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The amidosulfonates of Mn2+, Co2+, Ni2+, Cu2+ and Zn2+ were prepared by the direct reaction between the metal carbonate and the amidosulfonic acid with heating and stirring. The compounds were characterized by infrared absorption spectroscopy (IRFT), elemental analysis, thermal analysis (TG and DTA) and X-ray diffraction by the powder method. The absorptions observed in IR spectra are associated with N-H and O-H stretching, as well as symmetrical and asymmetric S-O stretching in the sulfonic group. The compounds present X-ray diffraction pattern with well-defined reflections, showing no evidence of isomorphism. The TG-DTA curves allowed to establish the stoichiometry of compounds as M(NH2SO3)2.xH2O, where M = Mn2+, Co2+, Ni2+, Cu2+ and Zn2+ and x ranging from 1 to 4. Dehydration leads to the formation of stable anhydrous. In all cases the respective sulfates are formed as an intermediate. After consecutive steps of decomposition, the respective oxides were obtained: Mn3O4, CoO, NiO, CuO and ZnO. The TG-DTA curves are characteristic for each sample, with thermal events related to dehydration and ligand decomposition.
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46

Li, Zhigang, Xiaoming Zhang, Yuichi Sugai, Jiren Wang, and Kyuro Sasaki. "Measurements of Gasification Characteristics of Coal and Char in CO2-Rich Gas Flow by TG-DTA." Journal of Combustion 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/985687.

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Pyrolysis, combustion, and gasification properties of pulverized coal and char in CO2-rich gas flow were investigated by using gravimetric-differential thermal analysis (TG-DTA) with changing O2%, heating temperature gradient, and flow rate of CO2-rich gases provided. Together with TG-DTA, flue gas generated from the heated coal, such as CO, CO2, and hydrocarbons (HCs), was analyzed simultaneously on the heating process. The optimum O2% in CO2-rich gas for combustion and gasification of coal or char was discussed by analyzing flue gas with changing O2from 0 to 5%. The experimental results indicate that O2% has an especially large effect on carbon oxidation at temperature less than 1100°C, and lower O2concentration promotes gasification reaction by producing CO gas over 1100°C in temperature. The TG-DTA results with gas analyses have presented basic reference data that show the effects of O2concentration and heating rate on coal physical and chemical behaviors for the expected technologies on coal gasification in CO2-rich gas and oxygen combustion and underground coal gasification.
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47

Liu, Ying, Ying Ying Zhang, Tian Yu Yang, and Wei Lu He. "Study on the Calcination of Titanium Silicalite Zeolite (TS-1)." Advanced Materials Research 287-290 (July 2011): 317–21. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.317.

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The calcination process of titanium silicalite zeolite TS-1, which was prepared by hydrothermal method, was investigated using TG-DTA, XRD, FT-IR and SEM. With TG-DTA analysis, it has been observed that the crystal form was not changed after calcination under 1073K and the amount of template removal from zeolite channels was not affected by heating rate. The photographs of SEM showed that calcined TS-1 crystal morphology was integrated under 823K, but ruptured at 923K. Analyzing FT-IR with XRD results, the calcination process changed the cell parameter and unit cell volume, and increased the crystallinity of zeolite TS-1.
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48

MORAIS, Francisca Edivânia, Sheila Pricila Marques CABRAL, Eliane Gonçalves ARAUJO, Carlos Alberto MARTINEZ-HUITLE, and Nedja Suely FERNANDES. "THERMAL BEHAVIOR OF PARACETAMOL AND TABLETS OF REFERENCE, GENÉRIC AND SIMILAR." Periódico Tchê Química 09, no. 17 (January 20, 2012): 28–37. http://dx.doi.org/10.52571/ptq.v9.n17.2011.17_periodico17_pgs_17_27.pdf.

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The present study utilized the thermoanalytical techniques (TG, DTG, DTA and DSC) to evaluate the thermal behavior of tablets containing paracetamol and marketed as reference, generic and similar. The samples were also characterized by IR, X-ray diffraction and SEM. The TG/DTG curves presented similar behaviour indicanting a low influence of the excipients present in pharmaceutical formulations. The DTA and DSC curves showed an endothermic peak between about 165.0 and 195.0 oC characteristic of melting of paracetamol in all samples. The X-ray diffraction patterns showed similarities and characterized the compounds as crystallines. The micrographs indicated heterogeneity in particle size.
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49

Homa, M., N. Sobczak, K. Hodor, and S. Gezgin. "Simultaneous Differential Thermal Analysis and Thermogravimetric Analysis of Si-30B Alloy." Journal of Materials Engineering and Performance 29, no. 11 (October 28, 2020): 7073–79. http://dx.doi.org/10.1007/s11665-020-05157-2.

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AbstractThis article focuses on the experimental determination of the transformation temperature of Si-30B alloy in the temperature range of 25-1820 °C in a flowing gas atmosphere (He, 99.9992%) carried out by simultaneous differential thermal analysis and thermogravimetric analysis (DTA–TG) using a graphite container. The DTA curve during heating showed the presence of two critical temperatures, i.e., T = 1380.7 °C and T = 1532.0 °C. The first one corresponds to the melting point of a eutectic system (Si + SiB6). The high-temperature interaction and reactivity between the alloy and the container during DTA–TG test were evaluated by scanning electron microscopy coupled with energy-dispersive x-ray analysis. The results have demonstrated that the graphite container reacts with both liquid silicon and boron dissolved in liquid constituent of the alloy to form SiC and B4C, respectively.
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50

ASLAN, Halime Güzin. "Synthesis, Structural Characterization and DTA/TG Studies of a Schiff Base." Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 21, no. 3 (October 13, 2017): 812. http://dx.doi.org/10.19113/sdufbed.34496.

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