Process for producing ethylene glycol and/or glycolic acid ester

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making

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B01J 2372, B01J 3718

Patent

active

044408730

ABSTRACT:
A hydrogenation catalyst composition useful for the hydrogenation of an oxalate diester, said composition being composed of a reduction product of copper-containing silica gel formed by contacting an amine complex of copper with colloidal silica sol; and a process for producing the aforesaid composition. Using a catalyst composed of the aforesaid composition, ethylene glycol and/or a glycolic acid ester can be produced from an oxalate diester efficiently with high conversions and selectivities and without causing pollution attributed to the use of a chromium-containing catalyst composition.

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patent: 2891094 (1959-06-01), Karkalits, Jr. et al.
patent: 3637528 (1972-01-01), Stiles
patent: 3862055 (1975-01-01), Eurlings et al.
patent: 3886219 (1975-05-01), Reich
patent: 3888845 (1975-06-01), Fujita et al.
patent: 4174300 (1979-11-01), Koritala
patent: 4184982 (1980-01-01), Schroeder et al.

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