Dichlorodifluoromethane → CFC-114a CFC-12

HRID 248226

Reaction equation

HRID 248226 reaction equation
[Cl:1][C:2]([Cl:8])([F:7])[C:3]([F:6])([F:5])[F:4].[Cl:9][C:10]([Cl:13])([F:12])[F:11].[H][H]>>[C:3]([F:6])([F:5])([F:4])[C:2]([Cl:8])([Cl:1])[F:7].[C:10]([Cl:13])([Cl:9])([F:12])[F:11]

Participants

4

Reactant 3

HCID 6391Dichlorodifluoromethane2×HCID 97751,1-Dichloro-1,2,2,2-tetrafluoroethane2×HCID 178418361HCID 178418361, compound2×

Product 1

HCID 87764597CFC-114a CFC-12

Procedure

Mixtures of 2,2-dichloro-1,1,1,2-tetrafluoroethane (CFC-114a), dichlorodifluoromethane (CFC-12) and hydrogen were fed to a reactor operated at several temperatures for 92 hours. For a 10.5 hour period at 600° C., at an average time in synthesis of 38 hours, with liquid feed rates of 11.9 mL/hr of CFC-114a and 1.2 mL/hr of CFC-12 and a hydrogen feed rate of 500 cc/min (1 atm. and room temperature basis); a molar ratio of (CFC-114a+CFC-12):H2 equal to 1:11 was provided, and the organic component of the reactor effluent contained an average (area percent) of 0.97% difluoromethane (HFC-32), 1.57% chlorodifluoromethane (FCFC-22), and 0.25% CFC-12, as well as 37.7% HFC-134A, 56.0% HCFC-124 and 2.8% CFC-114a.

Workup

  1. waitFor a 10.5 hour period at 600° C.
  2. customat an average time in synthesis of 38 hours

Sources & evidence

ORD record
ord-8260c269534a4f5b9dedff73f7c5d2a1
Source dataset
uspto-grants-1993_05
Patent number
US05208397

Linked notes

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