Carbon Dioxide → Benzaldehyde

HRID 268108Notes

Reaction equation

HRID 268108 reaction equation
O=O.O.[C:4](=[O:6])=[O:5].[C:7]1(C)[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[CH:4](=[O:6])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[C:4]([OH:6])(=[O:5])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Participants

6

Reactant 4

HCID 280Carbon Dioxide2×HCID 962WaterHCID 977OxygenHCID 1140Toluene2×

Product 2

HCID 240BenzaldehydeHCID 243Benzoic Acid

Procedure

The reactor is heated to, and maintained at, 140°, when a stream of 300 mmoles/hr. nitrogen, 100 mmoles/hr. oxygen, 180 mmoles/hr. water and 17 mmoles/hr. toluene is passed through the catalyst bed. The exhaust gases are passed through a trap cooled by dry ice, followed by a carbon dioxide absorbing solution. Gas chromatographic and titrimetric analyses on the product of a 5 hour operation indicate product yields of 2.6 mole % benzaldehyde, 0.6 mole % benzoic acid and 0.8 mole % toluene converted to carbon dioxide. The conversion is 4.0% with a benzaldehyde selectivity of 65%.

Workup

  1. temperatureThe reactor is heated to, and
  2. temperaturemaintained at, 140°, when a stream of 300 mmoles/hr
  3. customThe exhaust gases are passed through a trap
  4. customon the product of a 5 hour operation

Sources & evidence

ORD record
ord-f12a2da980ee440da50b6a2d51df1a41
Source dataset
uspto-grants-1976_03
Patent number
US03946067

Reaction notes

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