[CH:1](=[O:5])[CH2:2][CH2:3][CH3:4].[H][H]>[Pd]>[CH:1](=[O:5])[CH2:2][CH2:3][CH3:4].[CH2:3]([CH:2]([CH2:1][CH2:2][CH2:3][CH3:4])[CH:1]=[O:5])[CH3:4]Using the apparatus described above, n-butyraldehyde was fed at a WHSV of 1.2, using hydrogen as the carrier gas, at atmospheric pressure and at 200° C. over an ALPO4 -31 catalyst loaded with 0.5% of palladium. The reaction resulted in an n-butyraldehyde conversion of 50% with about 10% selectivity to 2-ethylhexaldehyde.
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