| Autor: |
Mounts, T. L., Butterfield, R. O., Scholfield, C. R., Dutton, H. J. |
| Zdroj: |
Journal of the American Oil Chemists' Society; March 1970, Vol. 47 Issue: 3 p79-82, 4p |
| Abstrakt: |
Micro vapor-phase hydrogenation and radiotracer techniques have been utilized to investigate the effect of geometric configuration and double bond position on the rate of hydrogenation of octadecenoates. These techniques provide for simultaneously monitoring the time course of vapor-phase hydrogenation both for an essentially pure monoene isomer by thermal conductivity and for methyl oleate by radioactivity. The two hydrogenations proceed independently but have identical parameters of temperature, flow rate and catalyst activity. The experimental data are plotted, relative reaction rates are calculated and theoretical curves are drawn by a digital computer system with plotter accessory. Experiments with nickel catalysts indicate that rates of reduction are affected by both the position and configuration of the double bond.cis-15-Octadecenoate is reduced 1.4 times faster than itscis-9 isomer. Bothcis-9- and -12-octadecenoate are reduced at approximately equal rates.cis-9-Octadecenoate was reduced 1.4 times as fast as thecis-6 isomer. Oleate was reduced 1.27 times as fast as elaidate. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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