Editing Ethyl tert-butyl ether (section)

== Production ==
Ethyl tert-butyl ether is manufactured industrially by the acidic etherification of [[isobutylene]] with [[ethanol]] at a temperature of 30–110&nbsp;°C and a pressure of 0,8–1,3 MPa. The reaction is carried out with an acidic [[ion-exchange resin]] as a [[catalyst]].<ref name=production>{{cite web |last1=Grömping |first1=Matthias |last2=Höper |first2=Frank |last3=Leistner |first3=Jörg |last4=Nierlich |first4=Franz |last5=Peters |first5=Udo |last6=Praefke |first6=Jochen |last7=Rix |first7=Armin |last8=Röttger |first8=Dirk |last9=Santiago Fernandez  |first9=Silvia |title=Preparing ethyl tertiary butylether from hydrocarbon mixture, useful as fuel additive, comprises reacting isobutene with ethanol, separating the hydrocarbon, reacting separated isobutene with ethanol and separating unconverted hydrocarbon |url=https://patents.google.com/patent/DE102005062722A1/en?q=verfahren+zur+herstellung+von&q=etbe&oq=verfahren+zur+herstellung+von+etbe |website=Google Patents |publisher=Evonik Degussa GmbH |access-date=5 March 2019 |ref=production method}}</ref>
[[File:Synthese von Ethyl-tert-butylether.svg|frameless|upright=3.5|center|Synthesis of Ethyl tert-butyl ether]]
Suitable reactors are fixed-bed reactors such as tube bundle or circulation reactors in which the reflux can be cooled optionally.<ref name="production" />

[[Ethanol]], produced by fermentation and distillation, is more expensive than [[methanol]], which is derived from natural gas. Therefore, [[MTBE]], made from methanol is cheaper than ETBE, made from ethanol.