Acidic mixed oxide catalytic dealkylation to produce 1,4-butaned

Details Acidic mixed oxide catalytic dealkylation to produce 1,4-butaned Acidic mixed oxide catalytic dealkylation to produce 1,4-butaned

1983-05-03

1984-10-02

Raymond, Richard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568866, C07C 2700, C07C 2900, C07D30708

Patent

active

044749732

ABSTRACT:
A coproduct continuous dealkylation process is described in which 4-t-butoxy-n-butanol is contacted with acidic silica-alumina catalyst at temperatures in the 160.degree.-200.degree. C. range (reactor wall temperature) in the liquid hourly space velocity regime of 2:0 to 6:0 liter/liter catalyst/hr. to produce in a single reactor a mixture in which the ultimate product of conversion of the 4-t-butoxy-n-butanol is 1,4-butanediol (1,4-diol) and tetrahydrofuran (THF) present in a preselected ratio (mole %) of 1,4-diol to THF ranging from 7:3 to 3:7. The 1,4-diol produced is useful in the preparation of polyesters, e.g. polybutylene terephthalates, and THF is a useful intermediate in the manufacture of certain chemicals and plastics.

REFERENCES:
patent: 3467679 (1969-09-01), Rogers
patent: 4136099 (1979-01-01), Smith
patent: 4156685 (1979-05-01), Tanabe et al.
patent: 4254290 (1981-03-01), Chambers et al.
patent: 4287127 (1981-09-01), Harris et al.

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