Standard molar enthalpies of formation for crystalline vanillic acid, methyl vanillate and acetovanillone by bomb calorimetry method

Maksimuk, Yuri; Antonava, Zoya; Ponomarev, D. A.; Sushkova, Alesia

doi:10.1007/s10973-018-7247-2

Cited by 8 publications

(2 citation statements)

References 71 publications

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“…Six pairs of oxygenated aromatic compounds with similar structures and chemical formulas that differ only in the number of oxygen atoms per molecule and that have experimentally determined enthalpies of combustion in the literature − were identified. Three pairs differed by one oxygen atom, while the remaining three pairs differed by two.…”

Section: Thermodynamic Frameworkmentioning

confidence: 99%

Development of a Thermophysical Properties Model for Flowsheet Simulation of Biomass Pyrolysis Processes

Gorensek

Shukre

Chen

2019

ACS Sustainable Chem. Eng.

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A properties model was developed for use in commercial process simulators to model pyrolysis of lignocellulosic biomass. The component list was chosen to enable process simulations based on a recently published lumped pyrolysis kinetics model. Since many of the compounds involved in pyrolysis are not found in simulator databanks, estimation based on available literature data was used to establish missing parameters. Standard solid enthalpy of formation, solid heat capacity, and solid density estimates calculated from the limited experimental data available were prepared for six biomass constituents and nine intermediate and end-products of their pyrolysis. Ideal gas enthalpy of formation and heat capacity, critical property, and vapor pressure estimates were prepared for another four pyrolysis end-products and one biomass component. The estimates were all validated against the closest available experimental data in the literature. The addition of these new components and properties allows thermodynamically rigorous simulation of lumped biomass pyrolysis reactions with accurate energy balances. Enthalpies of reaction calculated from the properties model were compared with reported reaction enthalpies for the same lumped biomass pyrolysis reactions and found to be in general agreement.

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Section: Thermodynamic Frameworkmentioning

confidence: 99%

Development of a Thermophysical Properties Model for Flowsheet Simulation of Biomass Pyrolysis Processes

Gorensek

Shukre

Chen

2019

ACS Sustainable Chem. Eng.

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“…A comparison of the value of ε calor of some combustion calorimeters found in the literature was made (see table 4 [36][37][38][39][40][41][42][43][44][45][46][47][48]). This scheme shows heat capacities for traditional combustion calorimeters and some with semi-micro combustion bombs.…”

Section: Calibration Of the Calorimetermentioning

confidence: 99%

Design and building of an isoperibolic calorimeter: measurements of enthalpy of formation for derivatives of glycidol

Campos

Martínez‐Gómez

Orozco-Guareño

2019

Meas. Sci. Technol.

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The enthalpy of formation can be determined indirectly with different calorimetric techniques; one of the most used is combustion calorimetry. During a combustion process, there are multiple energy variables that can significantly influence the overall result of the measurement. One of these variables is the energy exchange that exists between the calorimeter and the surroundings. To reduce this energy contribution and obtain more precise measurements of combustion energies of compounds containing the elements C, H, O and N, a combustion calorimeter in isoperibolic operation was designed, constructed and calibrated. The measurements made with this instrument show good precision; the results obtained for internal energy and the combustion enthalpy of succinic acid (solid sample) and for glycidol, glycidyl isopropyl ether, glycidyl butyrate and glycidyl methacrylate (liquid samples) are presented. The error percentage for the ε calor of the calorimetric system proposed was compared with a commercial calorimeter and published results in the literature.

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Grape Polyphenolics

Chavan

Sakhale

2020

Plant Antioxidants and Health

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Standard molar enthalpies of formation for crystalline vanillic acid, methyl vanillate and acetovanillone by bomb calorimetry method

Cited by 8 publications

References 71 publications

Development of a Thermophysical Properties Model for Flowsheet Simulation of Biomass Pyrolysis Processes

Development of a Thermophysical Properties Model for Flowsheet Simulation of Biomass Pyrolysis Processes

Design and building of an isoperibolic calorimeter: measurements of enthalpy of formation for derivatives of glycidol

Grape Polyphenolics

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