Selective production of N-substituted amides by use of CU(O)/metallic oxides catalyst compositions
申请人:ALLIED CORPORATION
公开号:EP0150295A2
公开(公告)日:1985-08-07
This invention provides a process for the selective conversion of aliphatic and aromatic aminonitriles, such as epsilon-aminocapronitrile, or mixtures of a primary amine, MNHR2, such as N-butylamine, and a nitrile, MCN, such as acetonitrile, into N-substituted amides, such as epsilon-caprolactam or N-butylacetamide, employing a Cu(O) catalyst in combination with oxides of a Group IVB, VB or VIB metal except chromium. The present invention, also provided a method of preparing a catalyst composition comprising Cu(O), substantially free of oxidized forms of Cu(O) and finely dispersed in oxides of a metal which is Ti, Zr, Hf, V, Nb, Ta, Mo or W, which comprises treating a substance comprising oxidized Cu and metal oxides with hydrogen at a pressure of at least about 100 kPa and at a temperature greater than about 250° C preferably about 350°-450°C for a time sufficient to produce a catalyst composition comprising Cu(O), substantially free of oxidized forms of Cu(O), finely dispersed in the metal oxides. The present invention also contemplates a catalyst composition comprising Cu(O), substantially free of oxides forms of Cu(O) and finely dispersed in oxides of Group IVB, VB or VIB metals except chromium.
本发明提供了一种将脂肪族和芳香族氨基腈(如ε-氨基己腈)或伯胺、MNHR2(如 N-丁胺)和腈的混合物选择性转化为 N-取代酰胺(如ε-己内酰胺或 N-丁基乙酰胺)的工艺、MCN,如乙腈,转化成 N-取代的酰胺,如epsilon-己内酰胺或 N-丁基乙酰胺,使用 Cu(O) 催化剂与除铬以外的 IVB、VB 或 VIB 族金属的氧化物结合。本发明还提供了一种制备催化剂组合物的方法,该催化剂组合物包含 Cu(O),基本上不含氧化形式的 Cu(O),并精细分散于 Ti、Zr、Hf、V、Nb、Ta、Mo 或 W 金属的氧化物中、其中包括用氢气在压力至少约 100 kPa 和温度高于约 250°C(最好约 350°C-450°C)的条件下处理由氧化 Cu 和金属氧化物组成的物质,处理时间足以产生由 Cu(O)组成的催化剂组合物,Cu(O)基本上不含氧化形式的 Cu(O),并细小地分散在金属氧化物中。本发明还考虑了一种催化剂组合物,该催化剂组合物包括基本不含氧化形式的 Cu(O),并细小地分散在除铬以外的 IVB、VB 或 VIB 族金属的氧化物中。