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    • 32. 发明申请
    • PROCESS FOR THE PRODUCTION OF DIARYL CARBONATES
    • 生产二氧化碳的方法
    • WO02048088A2
    • 2002-06-20
    • PCT/US2001/047205
    • 2001-11-13
    • C07B61/00C07C68/00C07C69/96
    • C07C68/005C07C69/96
    • A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liquid stream from an oxidative carbonylation reaction mixture in a reaction vessel (1), subjecting the liquid stream to reduced pressure, and returning at least a portion of dried liquid stream to the reaction vessel (1). Typical catalyst systems for oxidative carbonylation contain (A) at least one Group 8, 9, or 10 metal having an atomic number of at least 44 or a compound thereof; (B) at least one alkali metal salt; (C) at least one metal co-catalyst; (D) at least one activating organic solvent; and (E) optionally, at least one base.
    • 通过芳族羟基化合物与一氧化碳和氧气的氧化羰基化催化生产碳酸二芳酯的方法通过包括以下步骤的方法在反应过程中实现水去除:在反应容器(1)中从氧化羰基化反应混合物中除去液体物流, ,使液体物流减压,并将至少一部分干燥的液体物流返回到反应容器(1)。 用于氧化羰基化的典型催化剂体系包含(A)至少一种原子数为至少44的第8,9或10族金属或其化合物; (B)至少一种碱金属盐; (C)至少一种金属助催化剂; (D)至少一种活化有机溶剂; 和(E)任选的至少一个碱。