Process for preparing alkyl tert-alkyl ethers

Details Process for preparing alkyl tert-alkyl ethers Process for preparing alkyl tert-alkyl ethers

1990-03-30

1991-07-09

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568699, C07C 4106

Patent

active

050307681

ABSTRACT:
A process for preparing an alkyl-tert-alkyl ether wherein an olefin having a double bond on a tertiary carbon atom and a primary alcohol are reacted in the presence of a catalyst under conditions sufficient to produce an azeotropic alcohol/ether/hydrocarbon mixture containing the alkyl-tert-alkyl ether. The azeotropic alcohol/ether/hydrocarbon mixture is subjected to a cyclic liquid phase adsorption process sequence to selectively remove the alcohol. The resulting non-azeotropic ether/hydrocarbon stream can then be easily separated by distillation to provide the desired alkyl-tert-alkyl ether product and a hydrocarbon product. The cyclic adsorption process employed to separate the alcohol from the ether/hydrocarbon mixture comprises introducing the alcohol/ether/hydrocarbon mixture into a plurality of adsorption colums containing an alcohol selective adsorbent, wherein each respective absorption column undergoes successive steps of adsorption and desorption.

REFERENCES:
patent: 3726942 (1973-04-01), Louder
patent: 4409421 (1983-10-01), Herwig et al.
patent: 4447653 (1984-05-01), Vora
patent: 4605787 (1986-08-01), Chu et al.
patent: 4774365 (1988-09-01), Chen et al.

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