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Abstract  

Thermal analysis and differential thermal analysis offers a novel means of studying the desorption of acids such as stearic acid from clay surfaces. Both adsorption and chemisorption can be distinguished through the differences in the temperature of mass losses. Increased adsorption is achievable by adsorbing onto a surfactant adsorbed montmorillonite. Stearic acid sublimes at 179 °C but when adsorbed upon montmorillonite sublimes at 207 and 248 °C. These mass loss steps are ascribed to the desorption of the stearic acid on the external surfaces of the organoclays and from the de-chemisorption from the surfactant held in the interlayer of the montmorillonite.

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Journal of Thermal Analysis and Calorimetry
Authors: Carolina Resmini Melo, Elidio Angioletto, Humberto Gracher Riella, Michael Peterson, Márcio Roberto Rocha, Aline Resmini Melo, Luciano Silva, and Susane Strugale

were characterized by thermogravimetric analysis (TG) and differential thermogravimetric analysis (DTG) using a TA instrument (Q500), 20–1200 °C, 10 °C/min, sample mass of 18.225 mg and Al 2 O 3 crucible. X-ray diffraction (XRD) was performed using a

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Thermal decomposition of hydromagnesite

Effect of morphology on the kinetic parameters

Journal of Thermal Analysis and Calorimetry
Authors: D. Bhattacharjya, T. Selvamani, and Indrajit Mukhopadhyay

. 2007 ; 89 : 479 – 490 . 10.1007/s10973-006-8486-1 . 14. Frost , RL , Hales , MC , Martens , WN . Thermogravimetric analysis of selected group (II) carbonate minerals—implication for

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Journal of Thermal Analysis and Calorimetry
Authors: Simone Pereira da Silva Ribeiro, Luciana Rocha de Moura Estevão, Csaba Novák, and Regina Sandra Veiga Nascimento

interplanar distance on the synergistic effect with an intumescent formulation is evaluated by thermogravimetric analysis (TG) and differential thermal analysis (DTA), in addition to heating microscopy. Although the aforementioned techniques are not designed

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Journal of Thermal Analysis and Calorimetry
Authors: Yuri Park, Godwin A. Ayoko, Janos Kristof, Erzsébet Horváth, and Ray L. Frost

undertaken to investigate the structure of organoclays using X-ray diffraction and the interlayer configuration of intercalated surfactant in MMT was elucidated. Moreover, thermogravimetric analysis (TG) was used to investigate the microenvironment and

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Journal of Thermal Analysis and Calorimetry
Authors: Yuri Park, Godwin A. Ayoko, Janos Kristof, Erzsébet Horváth, and Ray L. Frost

(XRD) and thermogravimetric analysis (TG) and a comparison between organoclays intercalated with mono- and di-alkyl surfactants were investigated. In particular, TG analysis, which is an essential tool to support microenvironment and packing arrangement

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–60° (2θ), with a scanning speed of 8° (2θ)/min and a step of 0.06° (2θ). Thermogravimetric (TG) study of starches Thermogravimetric analysis of native and highly substituted acetylated starch (AMBS) was

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( T onset ) and derivative thermogravimetric analysis (DTG) peaks data for sulfonic acid group functionalized Brönsted acidic ionic liquids 1a – h , 2a – h , and 3a – h

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respectively. The advantage of using Eqs. 3 and 4 for the determination of the kinetic parameters is that manipulation of these functions is simpler than in the case of Eq. 1 . For this study, thermogravimetric analysis (TG) was used to measure the

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Journal of Thermal Analysis and Calorimetry
Authors: Luciano N. Batista, Rosane A. S. San Gil, Luciana B. R. Lopes, and Vera L. P. Soares

-Elmer model 7); thermogravimetric analysis in N 2 atmosphere, at 20 °C min −1 , up to 800 °C (Perkin-Elmer model 7e) and distillation behaviour according to ASTM D1160 [ 5 ]. A sample of biodiesel was analysed in these same conditions and a sample of (2

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