Add time:09/27/2019 Source:sciencedirect.com
The standard (p∘ = 0.1 MPa) molar energies of combustion in oxygen, at T = 298.15 K, for crystalline d-,l-galactono-1,4-lactone, d-,l-gulono-1,4-lactone and l-mannono-1,4-lactone were measured by static-bomb calorimetry, by using paraffin oil as auxiliary substance and leading to the following results: d-galactono-1,4-lactonel-galactono-1,4-lactoned-gulono-1,4-lactonel-gulono-1,4-lactonel-mannono-1,4-lactoneΔcUm∘(cr,298.15K)/(kJ·mol-1)−2559.09 ± 0.47−2559.66 ± 0.48−2561.32 ± 0.51−2560.91 ± 0.48−2563.43 ± 0.37ΔcHm∘(cr,298.15K)/(kJ·mol-1)−2557.85 ± 0.47−2558.42 ± 0.48−2560.08 ± 0.51−2559.67 ± 0.75−2562.19 ± 0.37ΔfHm∘(cr,298.15K)/(kJ·mol-1)−1232.36 ± 0.65−1231.79 ± 0.65−1230.13 ± 0.65−1230.54 ± 0.62−1228.02 ± 0.65ΔfusH(Tfus)/(kJ · mol−1)35.77 ± 0.3235.98 ± 0.0640.13 ± 0.6041.50 ± 0.3636.13 ± 0.20Tfus/K410.32 ± 0.03409.82 ± 0.03459.30 ± 0.23458.96 ± 0.05426.52 ± 0.06
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