发明名称 |
Catalyst for the hydration of nitriles, and process for the hydration of acrylonitrile into acrylamide |
摘要 |
1. A process for the preparation of a catalyst based on copper and vanadium for the hydration of nitriles characterised in that it is produced at ambient temperature in an inert atmosphere and comprises the following steps : a) dissolving in water a complexing agent capable of complexing copper II compounds in water-soluble form ; b) alkalinising the solution produced by an alkali metal hydroxide ; c) dissolving a compound of copper II in the medium obtained in step b) ; d) dissolving a water-soluble compound of vanadium in the medium produced in step c) ; e) dissolving a reducing agent for the copper II ions in the medium from step d) ; f) and recovering the catalyst formed after washing of the precipitate obtained ; the amounts of reactants used in steps a), b), c), d) and e) corresponding to : - a complexing agent/copper II compound molar ratio ranging from 2/1 to 10/1 ; - a base/copper II compound molar ratio ranging from 2/1 to 10/1 ; - a copper II/vanadium molar ratio of at least 6/1 ; and - an amount of reducing agent ranging from 100% to 300% of the stoichiometric amount.
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申请公布号 |
EP0145553(A1) |
申请公布日期 |
1985.06.19 |
申请号 |
EP19840402294 |
申请日期 |
1984.11.13 |
申请人 |
RHONE-POULENC SPECIALITES CHIMIQUES |
发明人 |
SALVI, FRANCO |
分类号 |
C07C233/09;(IPC1-7):C07C102/08 |
主分类号 |
C07C233/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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