Dialuminum dioxide
- Formula: Al2O2
- Molecular weight: 85.9619
- CAS Registry Number: 12252-63-0
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -94.300 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 67.137 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1979 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 6000. |
|---|---|
| A | 19.35420 |
| B | 0.439752 |
| C | -0.118839 |
| D | 0.010124 |
| E | -0.311649 |
| F | -101.1340 |
| G | 88.68021 |
| H | -94.30010 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1979 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.9 ± 0.5 | EI | Ho and Burns, 1980 | LLK |
| 10. ± 1. | EI | Paule, 1976 | LLK |
| 10. ± 1. | EI | Farber, Srivastava, et al., 1972 | LLK |
| 9.9 ± 0.5 | EI | Drowart, DeMaria, et al., 1960 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Ho and Burns, 1980
Ho, P.; Burns, R.P.,
A mass spectrometric study of the AlO2 molecule,
High Temp. Sci., 1980, 12, 31. [all data]
Paule, 1976
Paule, R.C.,
Mass spectrometric studies of Al2O3 vaporization processes,
High Temp. Sci., 1976, 8, 257. [all data]
Farber, Srivastava, et al., 1972
Farber, M.; Srivastava, R.D.; Uy, O.M.,
Mass spectrometric determination of the thermodynamic properties of the vapour species from alumina,
J. Chem. Soc. Faraday Trans. 1, 1972, 68, 249. [all data]
Drowart, DeMaria, et al., 1960
Drowart, J.; DeMaria, G.; Burns, R.P.; Inghram, M.G.,
Thermodynamic study of Al2O3 using a mass spectrometer,
J. Chem. Phys., 1960, 32, 1366. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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