Standard states for bomb calorimetry

Washburn, Edward W.

doi:10.6028/jres.010.037

Cited by 423 publications

(319 citation statements)

References 0 publications

Supporting

Mentioning

317

Contrasting

Unclassified

Order By: Relevance

“….15 K, a typical value for organic compounds, was assumed [22]. The amount of the compound burnt in each experiment was determined from the total mass of carbon dioxide produced, taking into account that formed from the combustion of the cotton thread fuse and from n-hexadecane.…”

Section: Combustion Calorimetrymentioning

confidence: 99%

Thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl=methyl, ethyl)

Santos

Silva

Santiago

et al. 2014

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

show abstract

Section: Combustion Calorimetrymentioning

confidence: 99%

Thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl=methyl, ethyl)

Santos

Silva

Santiago

et al. 2014

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

show abstract

“…A value for the pressure coefficient of specific energy (ou/op) T = À0.2 JÁg À1 MPa À1 at T = 298.15 K, a typical value for organic compounds was assumed [19]. For the static-bomb, the amount of…”

mentioning

confidence: 99%

Experimental and computational study of the energetics of hydantoin and 2-thiohydantoin

Silva¹,

Cimas²,

Vale³

et al. 2013

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

The standard (p°= 0.1 MPa) molar energies of combustion of hydantoin and 2-thiohydantoin were measured by static and rotating bomb combustion calorimetry, respectively. The standard molar enthalpies of sublimation, at T = 298.15 K, were derived from the temperature dependence of the vapour pressures of these compounds, measured by the Knudsen-effusion technique, and from high temperature Calvet microcalorimetry. The conjugation of these experimental results enables the calculation of the standard molar enthalpies of formation in the gaseous state, at T = 298.15 K, which are discussed in terms of structural contributions.We have also estimated the gas-phase enthalpy of formation from high-level ab initio molecular orbital calculations at the G3MP2B3 level of theory, being the computed values in good agreement with the experimental ones. Furthermore, this composite approach was also used to obtain information about the gas-phase basicities, proton and electron affinities and adiabatic ionization enthalpies.

show abstract

“…The values for the pressure coefficient of specific energy, (∂u/∂p) T , were assumed to be -0.2 J · g -1 · MPa -1 at T ) 298.15 K, typical values for most organic compounds. 33 The mass of compound, m(compound), used in each experiment was determined from the total mass of carbon dioxide produced after allowance for that formed from the cotton thread fuse and Melinex. The standard massic energy of combustion, ∆ c u°, was calculated by the procedure given by Hubbard et al…”

Section: -29mentioning

confidence: 99%

Thermochemical Study of Three Hindered Pyridine Derivatives

2008

View full text Add to dashboard Cite

The present work reports the values of the gaseous standard (p°) 0.1 MPa) molar enthalpy of formation of three pyridine derivatives substituted with one, two, and three tert-butyl groups, in positions para, orthoortho and ortho-para-ortho to the nitrogen, respectively. The standard molar energies of combustion of each compound, determined by static bomb calorimetry, yielded their standard molar enthalpies of formation in the condensed phase at T ) 298.15 K, which together with the values of the standard molar enthalpies of vaporization or sublimation, measured by Calvet microcalorimetry, allowed the calculation of the standard gas phase molar enthalpy of formation of each compound studied. The enthalpies of combustion for 4-tertbutylpyridine (l), 2,6-di-tert-butylpyridine (l) and 2,4,6-tri-tert-butylpyridine (cr) were found to be, respectively, -(5 370.1 ( 3.4) kJ mol -1 , -(7954.2 ( 4.0) kJ mol -1 , and -(10 542.9 ( 4.9) kJ mol -1 . The molar enthalpies of vaporization were measured as (54.4 ( 1.3) kJ mol -1 for 4-tert-butylpyridine, (56.6 ( 1.2) kJ mol -1 for 2,6-di-tert-butylpyridine, whereas the enthalpy of sublimation of 2,4,6-tri-tert-butylpyridine was found to be (78.3 ( 1.7) kJ mol -1 .

show abstract

Standard states for bomb calorimetry

Abstract: ABSTRACT

Cited by 423 publications

References 0 publications

Thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl=methyl, ethyl)

Thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl=methyl, ethyl)

Experimental and computational study of the energetics of hydantoin and 2-thiohydantoin

Thermochemical Study of Three Hindered Pyridine Derivatives

Contact Info

Product

Resources

About