| http://www.w3.org/ns/prov#value | - 12 carbon atoms, such as methanol, ethanol, propanol, isopropanol, the primary and secondary butanols,pentanols, hexanols, ethylene glycol, propylene glycol, butylene glycol, the polyglycols and glycerol, etc., or mixtures of two or more thereof.The presently preferred reactants to the etherification reaction zone are ethanol and isobutylene because they yield ethyl tertiary butyl ether (ETBE) whi
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