Process for preparing a nickel/ligand catalyst in which a crude ligand mixture is contacted with at least one member selected from the group consisting of (i) a weakly acidic organic resin, (ii) a weakly basic organic resin, (iii) a high-surface-area organic resin, (iv) activated carbon, (v) aluminosilicate zeolite, (vi) a two phase solvent system for liquid-liquid extraction and (vii) a Lewis acid; recovering a solution containing a ligand of the formula
(R
1
O)
2
POZOP(OR
1
)
2
; and
contacting the solution with nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel to produce the nickel/ligand catalyst.
制备
镍/
配体催化剂的工艺,其中粗
配体混合物与至少一种选自以下组别的成员接触:(i) 弱酸性有机
树脂,(ii) 弱碱性有机
树脂,(iii) 高比表面积有机
树脂,(iv)
活性炭,(v)
硅酸铝沸石,(vi) 用于液-液萃取的两相溶剂系统和 (vii)
路易斯酸;回收含有式(R)
配体的溶液
(R
1
O)
2
POZOP(OR
1
)
2
和
在腈类溶剂和比
镍电性更强的还原
金属存在下,将溶液与
氯化镍接触,生成
镍/
配体催化剂。