Process for preparing organic carboxylic acid
    3.
    发明授权
    Process for preparing organic carboxylic acid 失效
    制备有机羧酸的方法

    公开(公告)号:US5576458A

    公开(公告)日:1996-11-19

    申请号:US407612

    申请日:1995-03-21

    摘要: In the production step, alcohol is reacted with carbon monoxide in a reaction solvent in the presence of a rhodium-containing solid catalyst obtained by immobilizing rhodium in an insoluble carrier (I) containing a pyridine ring in its resin structure and an alkyl iodide containing an alkyl group of 1 to 5 carbon atoms, to produce a reaction product having a water content of 0.5 to 10% by weight; and in the subsequent removing step, an organic carboxylic acid is separated and recovered from the reaction product, and the recovered organic carboxylic acid is contacted with an insoluble carrier (II) containing a pyridine ring in its resin structure, to remove an iodide contained in the organic carboxylic acid.

    摘要翻译: 在制造工序中,使醇与反应溶剂中的一氧化碳反应,在含有固体催化剂的铑固体催化剂的存在下,将铑固定在其树脂结构中含有吡啶环的不溶性载体(I)中, 1〜5个碳原子的烷基,得到含水率为0.5〜10重量%的反应产物; 在随后的除去步骤中,将有机羧酸从反应产物中分离回收,回收的有机羧酸与其树脂结构中含有吡啶环的不溶性载体(II)接触,除去 有机羧酸。

    Supported rhodium catalyst, method of preparing same and process of
producing acetic acid by methanol carbonylation using same
    4.
    发明授权
    Supported rhodium catalyst, method of preparing same and process of producing acetic acid by methanol carbonylation using same 失效
    负载型铑催化剂,其制备方法和使用甲醇羰基化生产乙酸的方法

    公开(公告)号:US5364963A

    公开(公告)日:1994-11-15

    申请号:US169639

    申请日:1993-12-20

    摘要: A methanol carbonylation catalyst includes a rhodium complex supported on a porous, cross-linked vinylpyridine resin, wherein the vinylpyridine resin has a cross-linking degree of 30-60%, a pore volume of 0.1-0.4 ml/g and an average pore diameter of 20-100 nm. The catalyst may be prepared by contacting the pyridine ring-containing resin with an aqueous solution containing rhodium ion and then contacting the resulting rhodium ion-carrying resin with carbon monoxide and an alkyl iodide in an organic solvent to convert the rhodium ion to a rhodium complex bound to the resin. Acetic acid is produced by reacting carbon monoxide with methanol at a temperature of 140.degree.-250.degree. C. and a partial pressure of carbon monoxide of 7-30 kg/cm.sup.2 in the presence of an alkyl iodide and the above catalyst.

    摘要翻译: 甲醇羰基化催化剂包括负载在多孔交联乙烯基吡啶树脂上的铑络合物,其中乙烯基吡啶树脂的交联度为30-60%,孔体积为0.1-0.4ml / g,平均孔径 为20-100nm。 催化剂可以通过使含吡啶环的树脂与含有铑离子的水溶液接触,然后使所得的含铑离子的树脂与一氧化碳和烷基碘在有机溶剂中接触来将铑离子转化成铑络合物 结合树脂。 在烷基碘和上述催化剂的存在下,一氧化碳与甲醇在140〜250℃的温度和一氧化碳分压为7〜30kg / cm 2下反应生成乙酸。