Isobutanol → Isopropyl tert-butyl ether
Reaction equation
[CH2:1]=[C:2]([CH3:4])[CH3:3].[CH2:5]([OH:9])[CH:6]([CH3:8])[CH3:7]>>[C:2]([O:9][CH2:5][CH:6]([CH3:8])[CH3:7])([CH3:4])([CH3:3])[CH3:1]Participants
Reactant 2
Product 1
Procedure
In the etherification step, isobutene is reacted with alcohols, preferably with isobutanol, over an acid catalyst, preferably over an acid ion exchanger, to form ethers, preferably isobutyl tert-butyl ether. In one embodiment of the invention, the reaction is carried out in a three-stage reactor cascade in which the reaction mixture flows from the top downward through flooded fixed-bed catalysts. In the first reactor, the inlet temperature is from 0 to 60° C., preferably from 10 to 50° C.; the outlet temperature is from 25 to 85° C., preferably from 35 to 75° C., and the pressure is from 2 to 50 bar, preferably from 3 to 20 bar. At a ratio of isobutanol to isobutene of from 0.8 to 2.0, preferably from 1.0 to 1.5, the conversion is from 70 to 90%.
Sources & evidence
- ORD record
- ord-ac807ac789b648098698d613b039c48a
- Source dataset
- uspto-grants-2003_03
- Patent number
- US06538168B1
Reaction notes
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