exothermic


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exothermic

, exothermal
(of a chemical reaction or compound) occurring or formed with the evolution of heat

exothermic

[¦ek·sō′thər·mik]
(physics)
Indicating liberation of heat. Also known as exoergic.

exothermic

Said of a reaction that occurs with the evolution of heat.
References in periodicals archive ?
Exothermic temperature peaks between 930 [degree]C and 1000 [degree]C were attributed to the temperature range for mullite formation from metakaolinite (Ekosse, 2008) as per the following equation:
Thus, it can be assumed that the exothermic maximum at temperatures 250.
2t--10 endothermal effects at 135, 175, 190, 242, 338, 355, 375, 435, 482, 745[degrees]C and 8 exothermic at 212, 284, 390, 408, 470, 620, 658, 790[degrees]C; thermal effects at 600[degrees]C proceeded without weight loss; last 4 --with its loss: at 50-900[degrees]C it reached 7.
75, and 1:1 exhibited exothermic reactions at 150[degrees]C, eqMRs of 1:2 and 1:3 showed exothermic peaks at 185[degrees]C, and an eq-MR of 1:4 presented an exothermic peak at 180[degrees]C.
They involve chemical processes which do not lead to any useful work, but which are exothermic.
In combination, Huntsman says the system's good thixotropic and low exothermic properties lead to improved process efficiencies, characterised by easy handling and mixing, a long pot life of 240 minutes at 23[degrees]C, fast strength build-up and reduced curing cycle capabilities.
After the liner is in place and the curing process initiated by steam, water or ultra violate light, the sensors read and transmit exothermic conditions to an on-site computer.
The highly localized joule heating then can act as an initiator for exothermic self-sustaining chemical reactions of the active materials (thermal runaway) within the cell possibly generating high temperatures and pressures (depending upon many factors such as thermal stability of active materials, heat dissipation rate, etc.
The first mass loss (76%) of the anhydrous compound was observed between 250-428[degrees]C corresponding to the endothermic peak at 304[degrees]C without oxidative process and exothermic at 355[degrees]C with oxidative process.
Key words: rate constant, exothermic process, semi-batch reactor, identification, simulation
Flow chemistry in micro-reactors has many advantages over batch processing--better reproducibility and scalability, improved yields and fewer problems with unstable intermediates or exothermic reactions--and the user can now choose a flow path a configuration that is most chemically compatible with the type of chemistry to be performed.