Hydrogenolysis of polyalkylene glycols to produce monoethylene g

Details Hydrogenolysis of polyalkylene glycols to produce monoethylene g Hydrogenolysis of polyalkylene glycols to produce monoethylene g

1985-05-21

1987-03-10

Mars, Howard T.

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

Organic compounds

Oxygen containing

568866, 568903, 568907, C07C 4101, C07C 2700

Patent

active

046492259

ABSTRACT:
This invention relates to a process for selectively cleaving a polyalkylene glycol, e.g., diethylene glycol, containing at least one ether group therein at a carbon-to-oxygen covalent bond and independently at a carbon-to-carbon covalent bond by heating the polyalkylene glycol with molecular hydrogen in the presence of a hydrogenation catalyst containing iridium to produce at least one of monoethylene glycol monoethyl ether, monoethylene glycol monomethyl ether, monoethylene glycol and ethanol. Monoethylene glycol monoethyl ether can be produced in significant amounts by employing the process of this invention.

REFERENCES:
patent: 1953548 (1934-04-01), Young et al.
patent: 2497812 (1950-02-01), Copelin
patent: 2658081 (1953-11-01), Emerson et al.
patent: 2768978 (1956-10-01), Robertson
patent: 3833634 (1974-09-01), Pruett et al.
patent: 3975449 (1976-08-01), Suzuki
patent: 4088700 (1978-05-01), Watts
patent: 4091041 (1978-05-01), Smith
Davidova and Kraus, Journal of Catalysis, 61, 1-6 (1980).

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