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 stage, isobutene is reacted with alcohols, preferably with isobutanol, over an acidic catalyst, preferably over an acidic ion exchanger, to give ethers preferably isobutyl tert-butyl ether. According to one embodiment of the invention, the reaction is carried out in a three-stage reactor cascade, in which the reaction mixture flows through flooded fixed-bed catalysts from top to bottom. In the first reactor the inlet temperature is 0 to 60° C., preferably 10 to 50° C.; the outlet temperature is between 25 and 85° C., preferably between 35 and 75° C., and the pressure is 2 to 50 bar, preferably 3 to 20 bar. At a ratio of isobutanol to isobutene of from 0.8 to 2.0, preferably 1.0 to 1.5, the conversion is between 70 and 90%.
Sources & evidence
- ORD record
- ord-8b6fc49970d340e4a4c5042269bf1b1d
- Source dataset
- uspto-grants-2009_07
- Patent number
- US07566799B2
Reaction notes
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