Hydrogen

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Reaction thermochemistry data

Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
MS - José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 451 to 500

3Hydrogen + Glycerol cis-6-octadecenoate = Tristearin

By formula: 3H2 + C57H104O6 = C57H110O6

Quantity Value Units Method Reference Comment
ΔrH°-378.05kJ/molChydRogers and Choudhury, 1978liquid phase; solvent: Hexane; ALS

Benzene, (bromomethyl)- + 0.5Hydrogen = Toluene + 0.5Bromine

By formula: C7H7Br + 0.5H2 = C7H8 + 0.5Br2

Quantity Value Units Method Reference Comment
ΔrH°-4. ± 2.kJ/molChydAshcroft, Carson, et al., 1963liquid phase; ALS

Hydroxyl anion + Hydrogen = (Hydroxyl anion • Hydrogen)

By formula: HO- + H2 = (HO- • H2)

Quantity Value Units Method Reference Comment
ΔrH°30.kJ/molCIDPaulson and Henchman, 1984gas phase; approximate value; M

2Hydrogen + Linoelaidic acid = Octadecanoic acid

By formula: 2H2 + C18H32O2 = C18H36O2

Quantity Value Units Method Reference Comment
ΔrH°-248.8 ± 0.5kJ/molChydRogers, Hoyte, et al., 1978liquid phase; solvent: Hexane; ALS

3Hydrogen + 9,12,15-Octadecatrienoic acid, (Z,Z,Z)- = Octadecanoic acid

By formula: 3H2 + C18H30O2 = C18H36O2

Quantity Value Units Method Reference Comment
ΔrH°-380.2 ± 1.9kJ/molChydRogers, Hoyte, et al., 1978liquid phase; solvent: Hexane; ALS

6Hydrogen + Trilinolein = Tristearin

By formula: 6H2 + C57H98O6 = C57H110O6

Quantity Value Units Method Reference Comment
ΔrH°-757.05kJ/molChydRogers and Choudhury, 1978liquid phase; solvent: Hexane; ALS

1-Propanol, 2-methyl- = Hydrogen + Propanal, 2-methyl-

By formula: C4H10O = H2 + C4H8O

Quantity Value Units Method Reference Comment
ΔrH°68.1 ± 0.9kJ/molEqkConnett, 1975gas phase; Heat of dehydrogenation; ALS

Hydrogen + Palmitoleic acid = n-Hexadecanoic acid

By formula: H2 + C16H30O2 = C16H32O2

Quantity Value Units Method Reference Comment
ΔrH°-125.1 ± 1.0kJ/molChydRogers, Hoyte, et al., 1978liquid phase; solvent: Hexane; ALS

9-Octadecenoic acid, (E)- + Hydrogen = Octadecanoic acid

By formula: C18H34O2 + H2 = C18H36O2

Quantity Value Units Method Reference Comment
ΔrH°-120.2 ± 2.0kJ/molChydRogers, Hoyte, et al., 1978liquid phase; solvent: Hexane; ALS

2Hydrogen + 9,12-Octadecadienoic acid (Z,Z)- = Octadecanoic acid

By formula: 2H2 + C18H32O2 = C18H36O2

Quantity Value Units Method Reference Comment
ΔrH°-254.4 ± 1.5kJ/molChydRogers, Hoyte, et al., 1978liquid phase; solvent: Hexane; ALS

2Hydrogen + Ethene, 2-chloro-1,1-difluoro- = Ethane, 1,1-difluoro- + Hydrogen chloride

By formula: 2H2 + C2HClF2 = C2H4F2 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-258.4kJ/molChydLacher, Kianpour, et al., 1956gas phase; At 410 K; ALS

C10H22Mg (cr) + Hydrogen (g) + Bromine (l) = 2Neopentane (l) + Br2Mg (cr)

By formula: C10H22Mg (cr) + H2 (g) + Br2 (l) = 2C5H12 (l) + Br2Mg (cr)

Quantity Value Units Method Reference Comment
ΔrH°-669.6 ± 6.6kJ/molRSCAkkerman, Schat, et al., 1983MS

Ethene, tetrafluoro- + 2Hydrogen = 2carbon + 4hydrogen fluoride

By formula: C2F4 + 2H2 = 2C + 4HF

Quantity Value Units Method Reference Comment
ΔrH°-618.4 ± 4.6kJ/molChydNeugebauer and Margrave, 1956gas phase; ALS

2Hydrogen + 1,3-Pentadiene = Pentane

By formula: 2H2 + C5H8 = C5H12

Quantity Value Units Method Reference Comment
ΔrH°-226.4 ± 0.63kJ/molChydDolliver, Gresham, et al., 1937gas phase; At 355 °K; ALS

Hydrogen + Ethene, chloro- = Ethylene + Hydrogen chloride

By formula: H2 + C2H3Cl = C2H4 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-76.94kJ/molChydLacher, Kianpour, et al., 1956gas phase; At 298 K; ALS

2Hydrogen + Vinyl bromide = Hydrogen bromide + Ethane

By formula: 2H2 + C2H3Br = HBr + C2H6

Quantity Value Units Method Reference Comment
ΔrH°-199.2 ± 1.9kJ/molChydLacher, Kianpour, et al., 1957gas phase; ALS

Cyclohexanol = Cyclohexanone + Hydrogen

By formula: C6H12O = C6H10O + H2

Quantity Value Units Method Reference Comment
ΔrH°63.4 ± 2.3kJ/molEqkKabo, Yursha, et al., 1988gas phase; Dehydrogenation; ALS

Hydrogen + 2Methane, bromo- = 2Methane + Bromine

By formula: H2 + 2CH3Br = 2CH4 + Br2

Quantity Value Units Method Reference Comment
ΔrH°-28. ± 3.kJ/molChydAdams, Carson, et al., 1966liquid phase; ALS

1-Butene + Hydrogen = Butane

By formula: C4H8 + H2 = C4H10

Quantity Value Units Method Reference Comment
ΔrH°-125.9 ± 0.42kJ/molChydKistiakowsky, Ruhoff, et al., 1935gas phase; At 355 °K; ALS

Hydronium cation + Hydrogen = (Hydronium cation • Hydrogen)

By formula: H3O+ + H2 = (H3O+ • H2)

Quantity Value Units Method Reference Comment
ΔrH°15. ± 2.kJ/molSCATTERINGOkumura, Yeh, et al., 1990gas phase; M

Hydrogen + 2Ethane, iodo- = 2Ethane + Iodine

By formula: H2 + 2C2H5I = 2C2H6 + I2

Quantity Value Units Method Reference Comment
ΔrH°-88.7 ± 3.3kJ/molChydAshcroft, Carson, et al., 1965liquid phase; ALS

Hydrogen + 2-methoxybut-2-ene = Butane, 2-methoxy-

By formula: H2 + C5H10O = C5H12O

Quantity Value Units Method Reference Comment
ΔrH°-104. ± 0.8kJ/molChydDolliver, Gresham, et al., 1938gas phase; At 355°K; ALS

Hydrogen + n-Propyl chloride = Propane + Hydrogen chloride

By formula: H2 + C3H7Cl = C3H8 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-65.81 ± 0.67kJ/molChydDavies, Lacher, et al., 1965gas phase; ALS

Hydrogen + Ethyl bromide = Hydrogen bromide + Ethane

By formula: H2 + C2H5Br = HBr + C2H6

Quantity Value Units Method Reference Comment
ΔrH°-59.0 ± 1.1kJ/molChydFowell, Lacher, et al., 1965gas phase; ALS

Hydrogen + Methane, bromo- = Hydrogen bromide + Methane

By formula: H2 + CH3Br = HBr + CH4

Quantity Value Units Method Reference Comment
ΔrH°-73.6 ± 1.4kJ/molChydFowell, Lacher, et al., 1965gas phase; ALS

3,3-Dimethylbicylo[3.2.0]hepta-1,4-diene + 2Hydrogen = Bicyclo[3.2.0]heptane, 3,3-dimethyl-

By formula: C9H12 + 2H2 = C9H16

Quantity Value Units Method Reference Comment
ΔrH°-291. ± 2.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

Hydrogen + Propane, 2-chloro- = Propane + Hydrogen chloride

By formula: H2 + C3H7Cl = C3H8 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-58.32 ± 0.71kJ/molChydDavies, Lacher, et al., 1965gas phase; ALS

2Hydrogen + Dicyclopropa[cd,gh]pentalene,octahydro- = Bicyclo[3.2.1]octane

By formula: 2H2 + C8H10 = C8H14

Quantity Value Units Method Reference Comment
ΔrH°-277.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

4,4-Dimethyl-1,2,5,6-heptatriene + 4Hydrogen = Heptane, 4,4-dimethyl-

By formula: C9H12 + 4H2 = C9H20

Quantity Value Units Method Reference Comment
ΔrH°-582. ± 2.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

Hydrogen + 2-Ethoxypropene = Propane, 2-ethoxy-

By formula: H2 + C5H10O = C5H12O

Quantity Value Units Method Reference Comment
ΔrH°-105. ± 0.4kJ/molChydDolliver, Gresham, et al., 1938gas phase; At 355°K; ALS

2Hydrogen + Acepleiadane = Cyclohept[fg]acenaphthylene, 1,2,2a,3,4,4a,5,6,7,8-decahydro-

By formula: 2H2 + C16H16 = C16H20

Quantity Value Units Method Reference Comment
ΔrH°-124.5 ± 0.54kJ/molChydTurner, Lindsay, et al., 1971liquid phase; ALS

5Hydrogen + Cyclohept[fg]acenaphthylene = Cyclohept[fg]acenaphthylene, 1,2,2a,3,4,4a,5,6,7,8-decahydro-

By formula: 5H2 + C16H10 = C16H20

Quantity Value Units Method Reference Comment
ΔrH°-369.7 ± 1.9kJ/molChydTurner, Lindsay, et al., 1971liquid phase; ALS

Hydrogen + 2Ethyl bromide = 2Ethane + Bromine

By formula: H2 + 2C2H5Br = 2C2H6 + Br2

Quantity Value Units Method Reference Comment
ΔrH°23. ± 13.kJ/molChydAshcroft, Carson, et al., 1965liquid phase; ALS

2Hydrogen + Spiro[cyclopropane(1,5')bicyclo[2.1.0]pentane] = Cyclopentane, 1,1-dimethyl-

By formula: 2H2 + C7H10 = C7H14

Quantity Value Units Method Reference Comment
ΔrH°-427. ± 1.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

3Hydrogen + 1,3-Cyclopentadiene, 1,2,3,4-tetramethyl-5-methylene- = Cyclopentane, 1,2,3,4,5-pentamethyl-, (1,2,3/4,5)-

By formula: 3H2 + C10H14 = C10H20

Quantity Value Units Method Reference Comment
ΔrH°-296. ± 4.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

4Hydrogen + trans Bicyclo[6.1.0]nona-2,4,6-triene = Cyclononane

By formula: 4H2 + C9H10 = C9H18

Quantity Value Units Method Reference Comment
ΔrH°-504.2 ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

5Hydrogen + (E)-Hexa-1,5-diyne-3-ene = n-Hexane

By formula: 5H2 + C6H4 = C6H14

Quantity Value Units Method Reference Comment
ΔrH°-705. ± 2.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

5Hydrogen + (Z)-Hexa-1,5-diyne-3-ene = n-Hexane

By formula: 5H2 + C6H4 = C6H14

Quantity Value Units Method Reference Comment
ΔrH°-709. ± 2.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

3Hydrogen + C6H8 = n-Hexane

By formula: 3H2 + C6H8 = C6H14

Quantity Value Units Method Reference Comment
ΔrH°-432. ± 1.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

2Hydrogen + Bicyclo[2.2.0]hex-1(4)-ene = Cyclohexane

By formula: 2H2 + C6H8 = C6H12

Quantity Value Units Method Reference Comment
ΔrH°-426.8 ± 7.9kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

2Hydrogen + 3-(cis-Ethylidene)-1-cyclopentene = Cyclopentane, ethyl-

By formula: 2H2 + C7H10 = C7H14

Quantity Value Units Method Reference Comment
ΔrH°-211. ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

2Hydrogen + Cyclobutane, 1,2-diethenyl-, trans- = Cyclobutane, 1,2-diethyl-, trans-

By formula: 2H2 + C8H12 = C8H16

Quantity Value Units Method Reference Comment
ΔrH°-232. ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

3-(2-Propylidene)-1-cyclopentene + 2Hydrogen = Cyclopentane, (1-methylethyl)-

By formula: C8H12 + 2H2 = C8H16

Quantity Value Units Method Reference Comment
ΔrH°-208. ± 2.kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

4Hydrogen + Meso 1,2,6,7-cyclodecatetraene = Cyclodecane

By formula: 4H2 + C10H12 = C10H20

Quantity Value Units Method Reference Comment
ΔrH°-514.6 ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

2Hydrogen + 1,3-Cyclopentadiene, 1,2,3,4,5-pentamethyl- = Cyclopentane, 1,2,3,4,5-pentamethyl-, (1,2,3/4,5)-

By formula: 2H2 + C10H16 = C10H20

Quantity Value Units Method Reference Comment
ΔrH°-188. ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

3Hydrogen + C10H12 = 1,1'-Bicyclopentyl

By formula: 3H2 + C10H12 = C10H18

Quantity Value Units Method Reference Comment
ΔrH°-295. ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase; ALS

Cyclohexanol, 4-methyl-, cis- = Hydrogen + Cyclohexanone, 4-methyl-

By formula: C7H14O = H2 + C7H12O

Quantity Value Units Method Reference Comment
ΔrH°63.8 ± 2.5kJ/molEqkFedoseenko, Yursha, et al., 1983gas phase; At 493 K; ALS

Cyclohexanol, 4-methyl-, trans- = Hydrogen + Cyclohexanone, 4-methyl-

By formula: C7H14O = H2 + C7H12O

Quantity Value Units Method Reference Comment
ΔrH°67.7 ± 2.9kJ/molEqkFedoseenko, Yursha, et al., 1983gas phase; At 493 K; ALS

Cyclohexanol, 2-methyl-, cis- = Hydrogen + Cyclohexanone, 2-methyl-

By formula: C7H14O = H2 + C7H12O

Quantity Value Units Method Reference Comment
ΔrH°62.5 ± 2.3kJ/molEqkFedoseenko, Yursha, et al., 1983gas phase; At 493 K; ALS

Cyclohexanol, 2-methyl-, trans- = Hydrogen + Cyclohexanone, 2-methyl-

By formula: C7H14O = H2 + C7H12O

Quantity Value Units Method Reference Comment
ΔrH°66.6 ± 2.4kJ/molEqkFedoseenko, Yursha, et al., 1983gas phase; At 493 K; ALS

References

Go To: Top, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Rogers and Choudhury, 1978
Rogers, D.W.; Choudhury, D.N., Heats of hydrogenation of large molecules. Part 3 - Five simple unsaturated triglycerides (triacylglycerols), J. Chem. Soc. Faraday Trans. 1, 1978, 74, 2868-2872. [all data]

Ashcroft, Carson, et al., 1963
Ashcroft, S.J.; Carson, A.S.; Pedley, J.B., Thermochemistry of reductions caused by lithium aluminium hydride. Part 2.-The heats of formation of benzyl bromide, benzyl iodide and the benzyl radical, Trans. Faraday Soc., 1963, 59, 2713-2717. [all data]

Paulson and Henchman, 1984
Paulson, J.F.; Henchman, M.J., NATO Advanced Study Institute, Ionic Processes in the Gas Phase, Series C, M. A. Almoster - Ferreira, ed(s)., Reidel, Boston, 1984, 331. [all data]

Rogers, Hoyte, et al., 1978
Rogers, D.W.; Hoyte, O.P.A.; Ho, R.K.C., Heats of hydrogenation of large molecules. Part 2. Six unsaturated and polyunsaturated fatty acids, J. Chem. Soc. Faraday Trans. 1, 1978, 74, 46-52. [all data]

Connett, 1975
Connett, J.E., Chemical equilibria 6. Measurement of equilibrium constants for the dehydrogenation of 2-methylpropan-1-ol by a vapour-flow technique, J. Chem. Thermodyn., 1975, 7, 1159-1162. [all data]

Lacher, Kianpour, et al., 1956
Lacher, J.R.; Kianpour, A.; Oetting, F.; Park, J.D., Reaction calorimetry. The hydrogenation of organic fluorides and chlorides, Trans. Faraday Soc., 1956, 52, 1500-1508. [all data]

Akkerman, Schat, et al., 1983
Akkerman, O.S.; Schat, G.; Evers, E.A.I.M.; Bickelhaupt, F., Recl. Trav. Chim. Pays-Bas, 1983, 102, 109. [all data]

Neugebauer and Margrave, 1956
Neugebauer, C.A.; Margrave, J.L., The heats of formation of tetrafluoroethylene, tetrafluoromethane and 1,1-difluoroethylene, J. Phys. Chem., 1956, 60, 1318-1321. [all data]

Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E., Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons, J. Am. Chem. Soc., 1937, 59, 831-841. [all data]

Lacher, Kianpour, et al., 1957
Lacher, J.R.; Kianpour, A.; Montgomery, P.; Knedler, H.; Park, J.D., Reaction heats of organic halogen compounds. IX. The catalytic hydrogenation of vinyl and perfluorovinyl bromide, J. Phys. Chem., 1957, 61, 1125-1126. [all data]

Kabo, Yursha, et al., 1988
Kabo, G.J.; Yursha, I.A.; Frenkel, M.L.; Poleshchuk, P.A.; Fedoseenko, V.I.; Ladutko, A.I., Thermodynamic properties of cyclohexanol and cyclohexanone, J. Chem. Thermodyn., 1988, 20, 429-437. [all data]

Adams, Carson, et al., 1966
Adams, G.P.; Carson, A.S.; Laye, P.G., Thermochemistry of reductions caused by lithium aluminium hydride. Part 4.-Heat of formation of methyl bromide, Trans. Faraday Soc., 1966, 62, 1447-1449. [all data]

Kistiakowsky, Ruhoff, et al., 1935
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. II. Hydrogenation of some simpler olefinic hydrocarbons, J. Am. Chem. Soc., 1935, 57, 876-882. [all data]

Okumura, Yeh, et al., 1990
Okumura, M.; Yeh, L.I.; Myers, J.D.; Lee, Y.T., Infrared Spectra of the Solvated Hydronium Ion: Vibrational Predissociation Spectroscopy of Mass-Selected H3O+.(H2O)n.(H2)m, J. Phys. Chem., 1990, 94, 9, 3416, https://doi.org/10.1021/j100372a014 . [all data]

Ashcroft, Carson, et al., 1965
Ashcroft, S.J.; Carson, A.S.; Carter, W.; Laye, P.G., Thermochemistry of reductions caused by lithium aluminium hydride. Part 3.- The C-halogen bond dissociation energies in ethyl iodine and ethyl bromide, Trans. Faraday Soc., 1965, 61, 225-229. [all data]

Dolliver, Gresham, et al., 1938
Dolliver, M.A.; Gresham, T.L.; Kistiakowsky, G.B.; Smith, E.A.; Vaughan, W.E., Heats of organic reactions. VI. Heats of hydrogenation of some oxygen-containing compounds, J. Am. Chem. Soc., 1938, 60, 440-450. [all data]

Davies, Lacher, et al., 1965
Davies, J.; Lacher, J.R.; Park, J.D., Reaction heats of organic compounds. Part 4.-Heats of hydrogenation of n- and iso-Propyl bromides and chlorides, Trans. Faraday Soc., 1965, 61, 2413-2416. [all data]

Fowell, Lacher, et al., 1965
Fowell, P.; Lacher, J.R.; Park, J.D., Reaction heats of organic compounds. Part 3.-Heats of hydrogenation of methyl bromide and ethyl bromide, Trans. Faraday Soc., 1965, 61, 1324-1327. [all data]

Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R., Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld, Chem. Ber., 1991, 124, 2499-2521. [all data]

Turner, Lindsay, et al., 1971
Turner, R.B.; Lindsay, W.S.; Boekelheide, V., Heats of hydrogenation acepleiadylene, Tetrahedron, 1971, 27, 3341-3344. [all data]

Fedoseenko, Yursha, et al., 1983
Fedoseenko, V.I.; Yursha, I.A.; Kabo, G.Ya., Equilibrium and thermodynamics of cyclohexanol dehydrogenation reactions, Dokl. Akad. Nauk BSSR, 1983, 27, 926-929. [all data]

Notes

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