Dialuminum monoxide
- Formula: Al2O
- Molecular weight: 69.9625
- CAS Registry Number: 12004-36-3
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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 | -34.701 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 60.287 | 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 | 14.09900 |
| B | 0.703994 |
| C | -0.205933 |
| D | 0.020352 |
| E | -0.173347 |
| F | -39.51410 |
| G | 76.17340 |
| H | -34.70010 |
| 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 |
|---|---|---|---|
| 8.5 ± 0.2 | EI | Ho and Burns, 1980 | LLK |
| 8.0 ± 0.5 | EI | Smoes, Drowart, et al., 1976 | LLK |
| 8. ± 1. | EI | Paule, 1976 | LLK |
| 7.7 ± 0.5 | EI | Thompson, 1973 | LLK |
| 7.7 ± 0.2 | EI | Stearns and Kohl, 1973 | LLK |
| 8.20 ± 0.15 | EI | Hildenbrand, 1973 | LLK |
| 9. ± 1. | EI | Farber, Uy, et al., 1972 | LLK |
| 9. ± 1. | EI | Farber, Srivastava, et al., 1972 | LLK |
| 7.9 ± 0.3 | EI | DeMaria, Gingerich, et al., 1968 | RDSH |
| 8.5 ± 0.5 | EI | Blackburn, Buchler, et al., 1966 | RDSH |
| 7.7 ± 0.5 | EI | Drowart, DeMaria, et al., 1960 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| AlO+ | 15.1 ± 0.3 | Al | EI | Stearns and Kohl, 1973 | LLK |
| Al2+ | 15.2 ± 0.5 | O | EI | Stearns and Kohl, 1973 | 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]
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]
Smoes, Drowart, et al., 1976
Smoes, S.; Drowart, J.; Myers, C.E.,
Determination of the atomization energies of the molecules TaO(g) TaO2(g) by the mass-spectrometric Knudsen-cell method,
J. Chem. Thermodyn., 1976, 8, 225. [all data]
Paule, 1976
Paule, R.C.,
Mass spectrometric studies of Al2O3 vaporization processes,
High Temp. Sci., 1976, 8, 257. [all data]
Thompson, 1973
Thompson, K.R.,
Mass spectrometric determination of the atomization energies of AlSiO(g) and Al2O(g),
High Temp. Sci., 1973, 5, 62. [all data]
Stearns and Kohl, 1973
Stearns, C.A.; Kohl, F.J.,
Mass spectrometric determination of the dissociation energies of gaseous Al2, AlSi, and AlSiO,
High Temp. Sci., 1973, 5, 113. [all data]
Hildenbrand, 1973
Hildenbrand, D.L.,
Dissociation energies of the molecules AlO and Al2O,
Chem. Phys. Lett., 1973, 20, 127. [all data]
Farber, Uy, et al., 1972
Farber, M.; Uy, O.M.; Srivastava, R.D.,
Effusion-mass spectrometric determination of the heats of formation of the gaseous molecules V4O10, V4O8, VO2, and VO,
J. Chem. Phys., 1972, 56, 5312. [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]
DeMaria, Gingerich, et al., 1968
DeMaria, G.; Gingerich, K.A.; Piacente, V.,
Vaporization of aluminum phosphide,
J. Chem. Phys., 1968, 49, 4705. [all data]
Blackburn, Buchler, et al., 1966
Blackburn, P.E.; Buchler, A.; Stauffer, J.L.,
Thermodynamics of vaporization in the aluminum oxideboron oxide system,
J. Phys. Chem., 1966, 70, 2469. [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:
AE Appearance energy 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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