Structures, thermochemical properties (enthalpy, entropy and heat capacity), rotation barriers, and peroxide bond energies of vinyl, allyl, ethynyl and phenyl hydroperoxidesElectronic supplementary information (ESI) available. Structures, geometry parameters, thermochemical properties, rotation barriers and peroxide bond energies of vinyl, allyl, ethynyl and phenyl hydroperoxides. See http://www.rsc.org/suppdata/cp/b1/b111303h/Presented at the Bunsen Discussion on Formation and Degradation of Hydrocarbons in High-Temperature Reactions, Bad Herrenalb, Germany, 7–11 October, 2001.

2002 ◽  
Vol 4 (15) ◽  
pp. 3691-3703 ◽  
Author(s):  
Nadia Sebbar ◽  
Henning Bockhorn ◽  
Joseph W. Bozzelli
Author(s):  
I. Khidirov ◽  
V. V. Getmanskiy ◽  
A. S. Parpiev ◽  
Sh. A. Makhmudov

This work relates to the field of thermophysical parameters of refractory interstitial alloys. The isochoric heat capacity of cubic titanium carbide TiCx has been calculated within the Debye approximation in the carbon concentration  range x = 0.70–0.97 at room temperature (300 K) and at liquid nitrogen temperature (80 K) through the Debye temperature established on the basis of neutron diffraction analysis data. It has been found out that at room temperature with decrease of carbon concentration the heat capacity significantly increases from 29.40 J/mol·K to 34.20 J/mol·K, and at T = 80 K – from 3.08 J/mol·K to 8.20 J/mol·K. The work analyzes the literature data and gives the results of the evaluation of the high-temperature dependence of the heat capacity СV of the cubic titanium carbide TiC0.97 based on the data of neutron structural analysis. It has been proposed to amend in the Neumann–Kopp formula to describe the high-temperature dependence of the titanium carbide heat capacity. After the amendment, the Neumann–Kopp formula describes the results of well-known experiments on the high-temperature dependence of the heat capacity of the titanium carbide TiCx. The proposed formula takes into account the degree of thermal excitation (a quantized number) that increases in steps with increasing temperature.The results allow us to predict the thermodynamic characteristics of titanium carbide in the temperature range of 300–3000 K and can be useful for materials scientists.


2020 ◽  
Author(s):  
Nayyereh hatefi ◽  
William Smith

<div>Ideal{gas thermochemical properties (enthalpy, entropy, Gibbs energy, and heat capacity, Cp) of 49 alkanolamines potentially suitable for CO2 capture applications and their carbamate and protonated forms were calculated using two high{order electronic structure methods, G4 and G3B3 (or G3//B3LYP). We also calculate for comparison results from the commonly used B3LYP/aug-cc-pVTZ method. This data is useful for the construction of molecular{based thermodynamic models of CO2 capture processes involving these species. The Cp data for each species over the temperature range 200 K{1500 K is presented as functions of temperature in the form of NASA seven-term polynomial expressions, permitting the set of thermochemical properties to be calculated over this temperature range. The accuracy of the G3B3 and G4 results is estimated to be 1 kcal/mol and the B3LYP/aug-cc-pVTZ results are of nferior quality..</div>


2008 ◽  
Vol 50 (11) ◽  
pp. 2013-2015 ◽  
Author(s):  
A. F. Prekul ◽  
V. A. Kazantsev ◽  
N. I. Shchegolikhina ◽  
R. I. Gulyaeva ◽  
K. Edagawa

2012 ◽  
Vol 54 (10) ◽  
pp. 2142-2144 ◽  
Author(s):  
V. M. Denisov ◽  
L. T. Denisova ◽  
L. A. Irtyugo ◽  
N. V. Volkov ◽  
G. S. Patrin ◽  
...  

2012 ◽  
Vol 54 (9) ◽  
pp. 1943-1945 ◽  
Author(s):  
V. M. Denisov ◽  
L. A. Irtyugo ◽  
L. T. Denisova ◽  
S. D. Kirik ◽  
L. G. Chumilina

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