应用漫反射红外光谱测定了不同的铜分子筛经真空自还原后吸附CO的基频、组频和泛频谱带.结果表明,CO压力较低时,形成Cu(Ⅰ)(CO)吸附物种,其种类与分子筛的结构特性有关.随CO压力增高,部分吸附物种转变为Cu(Ⅰ)(CO)2.分析Cu(Ⅰ)(CO)基频和组频谱带可得到比C-O伸缩振动更灵敏的反映Cu(Ⅰ)和CO作用的Cu(Ⅰ)-C伸缩振动频率.
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