Aluminum oxide
- Formula: AlO2
- Molecular weight: 58.9803
- CAS Registry Number: 11092-32-3
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Gas phase thermochemistry data
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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 | -20.60 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 60.189 | 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 1000. | 1000. to 6000. |
|---|---|---|
| A | 9.424092 | 15.58052 |
| B | 13.94749 | -0.639388 |
| C | -13.64006 | 0.188535 |
| D | 4.767161 | -0.012862 |
| E | -0.051019 | -0.685120 |
| F | -24.08987 | -27.00215 |
| G | 67.71200 | 76.65990 |
| H | -20.60000 | -20.60000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1979 | 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
B - John E. Bartmess
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 4.230 ± 0.010 | LPES | Desai, Wu, et al., 1996 | B |
| 4.05 ± 0.13 | TDEq | Srivastava, Uy, et al., 1972 | EA: 10 kcal > EA(Cl), new data for ΔHf(AlO2) and EA(Cl) used; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.5 ± 1.0 | EI | Ho and Burns, 1980 | LLK |
| 10. ± 1. | EI | Farber, Srivastava, et al., 1972 | LLK |
| 10. ± 1. | EI | Farber, Srivastava, et al., 1971 | LLK |
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]
Desai, Wu, et al., 1996
Desai, S.R.; Wu, H.; Wang, L.-S.,
Vibrationally Resolved Photoelectron Spectroscopy of AlO- and AlO2-,
Int. J. Mass Spectrom. Ion Proc., 1996, 159, 1-3, 75, https://doi.org/10.1016/S0168-1176(96)04443-6
. [all data]
Srivastava, Uy, et al., 1972
Srivastava, R.D.; Uy, O.M.; Farber, M.,
Effusion mass spectrometric study of the thermodynamic properties of AlO- and AlO2-,
J. Chem. Soc. Faraday Trans. 2, 1972, 1, 1388. [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]
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]
Farber, Srivastava, et al., 1971
Farber, M.; Srivastava, R.D.; Uy, O.M.,
Mass spectrometric determination of the heat of formation of the AlO2 molecule,
J. Chem. Phys., 1971, 55, 4142. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity 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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