Author
C.G.R. Nair
Bio: C.G.R. Nair is an academic researcher from University of Kerala. The author has contributed to research in topics: Thermal decomposition & Decomposition. The author has an hindex of 9, co-authored 12 publications receiving 280 citations.
Papers
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TL;DR: In this paper, the effect of heating rate and sample mass on the first two stages of thermal decomposition of calcium oxalate monohydrate in a nitrogen atmosphere has been evaluated in detail using non-isothermal thermogravimetry.
66 citations
TL;DR: In this article, the first two stages of the thermal decomposition of calcium oxalate monohydrate have been established from non-isothermal thermogravimetric studies, and the rate-controlling processes are phase boundary reactions; the dehydration step assumes spherical symmetry whereas the decomposition step follows cylindrical symmetry.
38 citations
TL;DR: In this article, the kinetic parameters (energy of activation, E, and preexponential factor, A ) from non-isothermal TG data have been correlated, for the first time, with simultaneous variations of both the procedural factors (heating rate and sample mass) by multiple regression analysis.
36 citations
27 citations
TL;DR: In this paper, the thermal decomposition studies of bis(ethylenediamine)copper(II) chloride monohydrate and bis(methylenediaminescopper (II) bromide monohydrate were carried out using thermogravimetry (TG), derivative thermogram (DTG) and differential thermal analysis (DTA) to evaluate the kinetics and mechanism of the dehydration and the deamination stages of both the complexes.
26 citations
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TL;DR: In this paper, the authors present a set of recommendations for obtaining kinetic data that are adequate to the actual kinetics of various processes, including thermal decomposition of inorganic solids; thermal and thermo-oxidative degradation of polymers and organics; reactions of solids with gases; polymerization and crosslinking; crystallization of polymer and inorganics; hazardous processes.
890 citations
TL;DR: In this article, the kinetics of thermal dehydration and decomposition CaC 2 O 4 ·H 2 O were studied using thermogravimetry at four rates of linear increase of temperature and two different sample mass.
270 citations
TL;DR: In this article, a linear dependence of the logarithm of the Arrhenius temperature integral ln p(x) on x (= E R T ), its slope on x−1 and its intercept on In x, respectively, has been derived for non-isothermal experiments.
101 citations
TL;DR: In this article, an experimental investigation of the thermal pyrolysis behavior of several hybrid-rocket solid fuels under rapid heating conditions was conducted to identify and quantify the products of fuel pyroolysis.
Abstract: An experimental investigation of the thermal pyrolysis behavior of several hybrid-rocket solid fuels under rapid heating conditions was conducted to determine pyrolysis laws and to identify and quantify the products of fuel pyrolysis. The study focused on four fuel formulations: pure hydroxyl-terminated polybutadienes (HTPB), 80% HTPB/20% Alex, 80% HTPB/20% Al, and the Joint Industrial Research and Development fuel formulation. A rapid conductive-heating technique was developed and employed to determine Arrhenius-type pyrolysis laws. All four fuels displayed two sets of Arrhenius parameters, depending on the range of surface temperature. For pure HTPB,Ea = 4:91 kcal/mol andA = 11.04mm/s above722K, whileEa = 13:35 kcal/mol andA = 3965mm/s below 722 K. These results agree well with those obtained previously using a lab-scale hybridmotor operating under realistic conditions. The gas chromatograph/mass spectrometer tests of the nonmetalized fuels, using a ash-heating oven, indicated that the relative concentrations of the pyrolyzed species depended strongly on temperature. For pure HTPB seven major products were identi ed, with 1,3-butadiene representing the dominantproduct at all temperatures tested, up to 1073 K. The measured mole fractions of the pyrolysis products and deduced pyrolysis laws of the fuels studied can be utilized in a comprehensive model simulation for combustion performance predictions.
95 citations
TL;DR: In this article, simultaneous thermogravimetry (TG) and differential thermal analysis (DTA) of different lake aquatic humic-solute fractions were investigated under atmospheric temperature and pressure.
73 citations