heat of reaction


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heat of reaction

n
(Chemistry) chem the heat evolved or absorbed when one mole of a product is formed at constant pressure
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Compared with precursor fibers, the heat of reaction decreased from 503.50 to 346.40 J/g for samples pre-oxidized for 60 min, and 249.40 J/g for samples pre-oxidized for 200 min.
The predicted enthalpy of reaction of the 2K PU formulation in Table 1 was approximately 142 J/g assuming an average heat of reaction of 105 kj/mole for the isocyanate-hydroxyl reaction.
MDEA Esterquats has a low heat of reaction with the carbon dioxide and hydrogen sulphide and which allows lower reboiler duties due to the lower operating costs.
For the atomization reaction (4), heat of reaction (Eq.) at 298 K can be calculated by equation (5):
Thermal stability studies on lignin extracted from CCH and CCH were carried out through DSC where heat of reaction was measured.
[DELTA]Hr = the heat of reaction obtained as the area of the DSC thermogram.
Micro-Stirred Reaction Calorimetry ([mu]Cal): This reaction calorimeter can be used to determine the heat of reaction under isothermal conditions and identify the effects of changes in feed rate, temperatures, and concentrations on the instant-by-instant behavior of a reaction system.
This calorimeter enables easy, rapid characterization of these process-safety parameters, including heat transfer, specific heat of reaction mass, isothermal and non-isothermal heat flow, enthalpy and thermal conversion rates at all reaction stages.
Together with this, quick blending of these large reactors plus reliable removal of the heat of reaction are crucial.