Citation:
Yang Bo, Li Jingming, Zhou Guilin, Xie Xiaofan, Li Guijia. Influence of Oxygen on the Reduced Copper Catalyst for Acrylamide Synthesis[J]. Chinese Journal of Applied Chemistry,
;1995, 12(1): 80-82.
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The degree of oxidation,composition and valence tstate of the reduced copper cata-lyst prepared by the reduction in the aqueous phase were examined by themal analysis,pow-der X-ray diffrection analysis and XPS measurements,The catalytic abilities,i.e,hydration activity of acrylonitrile and selectivity of acrylamide and ethylene cyanohydrin were decreased obviously with increase of the degree of oxidation of the reduced catalyst Cu0 was found to be the active component and Cu2+ and Cu+-the poisoning components.The results showed that a variety of active sites exists in the reduced copper catalyst surface and the oxidation of copper catalyst with dissolved oxygen in water was much more rapid thn tht with oxygen in gaseous phase.
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Keywords:
- acrylonitrile,
- acrylamide,
- copper catalyst,
- catalytic activity
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