用离子交换方法制备了铜交换的分子筛，研究了将二价铜还原为一价铜的方法。

Cupric ion exchanged NaY zeolite was prepared. The method to reduce cupric into cuprous exchanged zeolite was studied.

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本尼迪克特溶液是硫酸铜(二价)的堿性溶液，它可以通过还原糖被还原为不溶性的铜(一价)的氧化物，产生红色的沉淀物。

Benedict 's solution is an alkaline solution of copper (ii) sulfate, which is reduced to insoluble copper (I) oxide by reducing sugars, giving a red precipitate.

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通过顺磁共振的方法证实了反应过程中二价铜和稳定自由基的存在。

The electron spin resonance (ESR) spectrums demonstrated the existence of Cu(II) and stable radicals during the polymerization process.

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