Aluminum dihydrogen tripolyphosphate:: Thermodynamic characteristics

N. I. Matskevich; Adrian Wright; Th. Wolf; I. V. Vyazovkin; O. I. Anyfrieva; M. Yu. Matskevich

doi:10.1016/j.jct.2017.03.017

Aluminum dihydrogen tripolyphosphate: Thermodynamic characteristics

N. I. Matskevich, Adrian Wright, Th. Wolf, I. V. Vyazovkin, O. I. Anyfrieva, M. Yu. Matskevich

Chemistry

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Abstract

For the first time solution enthalpies of Al, H₃PO₄, and AlH₂P₃O₁₀ × 2H₂O in 2 mol dm⁻³NaOH have been measured as following: Δ_solH°₁ = −404.75 ± 4.36 kJ mol⁻¹; Δ_solH°₂ = −189.48 ± 0.54 kJ mol⁻¹; Δ_solH°₃ = −238.95 ± 3.32 kJ mol⁻¹. On the basis of experimental data the standard molar enthalpy of formation and enthalpies of some reactions with participation of AlH₂P₃O₁₀ × H₂O were calculated. The enthalpy of interaction of Al with H₃PO₄ is Δ_rH° = −734.24 ± 5.56 kJ mol⁻¹. It was established that according to thermodynamic data Al₂O₃ can react with H₃PO₄ forming investigated compound at 513 K. Employed compound (AlH₂P₃O₁₀ × H₂O) can react with H₂O with formation of AlPO₄ and phosphorous acid. All the data were obtained for the first time.

Original language	English
Pages (from-to)	27-30
Journal	The Journal of Chemical Thermodynamics
Volume	111
Early online date	19 Mar 2017
DOIs	https://doi.org/10.1016/j.jct.2017.03.017
Publication status	Published - 1 Aug 2017

Keywords

Aluminum dihydrogen tripolyphosphate
Solution calorimetry
Thermochemical characteristics
Standard molar enthalpy of formation

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@article{e0effca031af4b9589934f599f628e18,

title = "Aluminum dihydrogen tripolyphosphate:: Thermodynamic characteristics",

abstract = "For the first time solution enthalpies of Al, H3PO4, and AlH2P3O10 × 2H2O in 2 mol dm−3NaOH have been measured as following: ΔsolH°1 = −404.75 ± 4.36 kJ mol−1; ΔsolH°2 = −189.48 ± 0.54 kJ mol−1; ΔsolH°3 = −238.95 ± 3.32 kJ mol−1. On the basis of experimental data the standard molar enthalpy of formation and enthalpies of some reactions with participation of AlH2P3O10 × H2O were calculated. The enthalpy of interaction of Al with H3PO4 is ΔrH° = −734.24 ± 5.56 kJ mol−1. It was established that according to thermodynamic data Al2O3 can react with H3PO4 forming investigated compound at 513 K. Employed compound (AlH2P3O10 × H2O) can react with H2O with formation of AlPO4 and phosphorous acid. All the data were obtained for the first time.",

keywords = "Aluminum dihydrogen tripolyphosphate , Solution calorimetry , Thermochemical characteristics , Standard molar enthalpy of formation",

author = "Matskevich, {N. I.} and Adrian Wright and Th. Wolf and Vyazovkin, {I. V.} and Anyfrieva, {O. I.} and Matskevich, {M. Yu.}",

year = "2017",

month = aug,

day = "1",

doi = "10.1016/j.jct.2017.03.017",

language = "English",

volume = "111",

pages = "27--30",

journal = "The Journal of Chemical Thermodynamics",

issn = "0021-9614",

publisher = "Elsevier",

}

TY - JOUR

T1 - Aluminum dihydrogen tripolyphosphate:

T2 - Thermodynamic characteristics

AU - Matskevich, N. I.

AU - Wright, Adrian

AU - Wolf, Th.

AU - Vyazovkin, I. V.

AU - Anyfrieva, O. I.

AU - Matskevich, M. Yu.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - For the first time solution enthalpies of Al, H3PO4, and AlH2P3O10 × 2H2O in 2 mol dm−3NaOH have been measured as following: ΔsolH°1 = −404.75 ± 4.36 kJ mol−1; ΔsolH°2 = −189.48 ± 0.54 kJ mol−1; ΔsolH°3 = −238.95 ± 3.32 kJ mol−1. On the basis of experimental data the standard molar enthalpy of formation and enthalpies of some reactions with participation of AlH2P3O10 × H2O were calculated. The enthalpy of interaction of Al with H3PO4 is ΔrH° = −734.24 ± 5.56 kJ mol−1. It was established that according to thermodynamic data Al2O3 can react with H3PO4 forming investigated compound at 513 K. Employed compound (AlH2P3O10 × H2O) can react with H2O with formation of AlPO4 and phosphorous acid. All the data were obtained for the first time.

AB - For the first time solution enthalpies of Al, H3PO4, and AlH2P3O10 × 2H2O in 2 mol dm−3NaOH have been measured as following: ΔsolH°1 = −404.75 ± 4.36 kJ mol−1; ΔsolH°2 = −189.48 ± 0.54 kJ mol−1; ΔsolH°3 = −238.95 ± 3.32 kJ mol−1. On the basis of experimental data the standard molar enthalpy of formation and enthalpies of some reactions with participation of AlH2P3O10 × H2O were calculated. The enthalpy of interaction of Al with H3PO4 is ΔrH° = −734.24 ± 5.56 kJ mol−1. It was established that according to thermodynamic data Al2O3 can react with H3PO4 forming investigated compound at 513 K. Employed compound (AlH2P3O10 × H2O) can react with H2O with formation of AlPO4 and phosphorous acid. All the data were obtained for the first time.

KW - Aluminum dihydrogen tripolyphosphate

KW - Solution calorimetry

KW - Thermochemical characteristics

KW - Standard molar enthalpy of formation

U2 - 10.1016/j.jct.2017.03.017

DO - 10.1016/j.jct.2017.03.017

M3 - Article

SN - 0021-9614

VL - 111

SP - 27

EP - 30

JO - The Journal of Chemical Thermodynamics

JF - The Journal of Chemical Thermodynamics

ER -

Aluminum dihydrogen tripolyphosphate: Thermodynamic characteristics

Abstract

Keywords

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