Process for the preparation of dialkyl carbonates

Details Process for the preparation of dialkyl carbonates Process for the preparation of dialkyl carbonates

1994-07-08

1995-12-19

Dees, Jose G.

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

Organic compounds

Carbonate esters

558260, C07C 6996

Patent

active

054769590

ABSTRACT:
Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites in a continuous gas phase reaction in the presence of a heterogeneous platinum metal catalyst, the activity of this catalyst being maintained by the addition of small amounts of halogen. The dialkyl carbonates are thus formed with almost quantitative selectivity and no deactivation of the catalyst occurs.

REFERENCES:
patent: 5231213 (1993-07-01), Landscheidt et al.
patent: 5319124 (1994-06-01), Wolters et al.
patent: 5380906 (1995-01-01), Nishira et al.
Chinese Literature and English Abstract p. 78, 1989; "Research of a New Method of Synthesis of Dimethyl Carbonate," Xuan-Zhen et al.

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