Process for preparing succinic anhydride
    15.
    发明授权
    Process for preparing succinic anhydride 失效
    制备琥珀酸酐的方法

    公开(公告)号:US5616730A

    公开(公告)日:1997-04-01

    申请号:US468586

    申请日:1995-06-06

    CPC分类号: C07C51/567

    摘要: Succinic anhydride (SA) can be prepared by catalytic hydrogenation of maleic anhydride (MA) with hydrogen in the liquid phase, by reacting a starting material composed of from 5 to 100% by weight of MA and from 95 to 0% by weight of SA, based on the total weight of MA and SA, at from 120.degree. to 150.degree. C. and a H.sub.2 pressure of from 10 to 150 bar over a Raney skeleton catalyst or a platinum group metal catalyst.

    摘要翻译: 琥珀酸酐(SA)可以通过马来酸酐(MA)与氢气在液相中的催化氢化,通过使由5〜100重量%的MA和95〜0重量%的SA组成的原料反应来制备 基于MA和SA的总重量,在120-150℃下,在阮内骨架催化剂或铂族金属催化剂上的H 2压力为10至150巴。

    Supported catalysts containing a platinum metal and process for preparing diaryl carbonates
    18.
    发明授权
    Supported catalysts containing a platinum metal and process for preparing diaryl carbonates 失效
    含铂金属的载体催化剂和制备碳酸二芳基酯的方法

    公开(公告)号:US06548445B1

    公开(公告)日:2003-04-15

    申请号:US08625613

    申请日:1996-03-29

    IPC分类号: B01J2713

    摘要: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.

    摘要翻译: 在使用铂金属催化剂和助催化剂的季盐和碱的存在下,由芳族羟基化合物,CO和O 2制备芳香族碳酸酯的方法中,有利地由负载型催化剂制成, 状态,(i)铂金属,铂金属卤化物或铂金属卤化物络合物和(ii)作为IB,IIB,IIIA,IIIB,IVA,IVB,VB,VIB,VIIB族的助催化剂的金属化合物, 元素周期表(Mendeleev)的铁族(原子数26-28)或稀土金属(原子数58-71),其量为0.01-15%(重量),以金属计算,基于 催化剂的总重量。