TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst is a noble metal catalyst, preferably platinum (preferred)/aluminum oxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process further comprises increasing the selectivity of alkanes having n carbons by increasing the pressure in the reaction mixture. The process further uses carbon dioxide as a cosolvent. The reaction pressure and temperature is 20-100 bar and 250-350 degrees C, respectively. The solvent, oxygenate, and molecular hydrogen are contacted with the catalyst in a fixed bed reactor in a continuous flow process and at a contact time sufficient to produce a deoxygenated product. The reaction mixture is at temperature that is 0.9-1.2 times the solvent critical temperature in absolute temperature units (K). Preferred Components: The solvent is a saturated 3-7C hydrocarbon, preferably saturated straight chain or branched 3-7C alkane, such as n-hexane, isohexane, 3-methylpentane, neohexane, 2,3-dimethylbutane, n-pentane, isopentane, neopentane, butane, isobutane and/or n-heptane. The concentration of the oxygenate is 0.05-1 mol/l. The oxygenate comprises a saturated aliphatic aldehyde. The oxygenate contains 5-20 carbon atoms. The liquid hourly space velocity (LHSV) is 0.1-10 mole/minute. The saturated aldehyde has n carbon atoms, and the completely deoxygenated product comprises a mixture of alkanes having n carbon atoms and n-1 carbon atoms. The partial pressure of the molecular hydrogen is in excess of the stoichiometric requirement for the catalytic deoxygenation of the oxygenate. The partial pressure of the molecular hydrogen is 5-55 bar. EXAMPLE - A solution of nonanal (0.3 mol/l) in n-hexane was fed to a reactor containing platinum/aluminum oxide catalysts. Hydrogen was fed through a solenoid valve and metered into the reactor. The liquid was preheated to 250 degrees C prior to mixing with hydrogen in an in-line mixer. The reactor was heated and the temperature was maintained within plus minus 5 degrees C via a sand bath and the reactor pressure was controlled to plus minus 0.35 bar to give corresponding deoxygenated compound.