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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
Diffuse reflectance infrared spectroscopy was used to determine the fundamental frequency, group frequency and pan frequency band of different copper molecular sieves adsorbed by vacuum self-reduction. The results show that the formation of Cu (Ⅰ) (CO) species occurs when CO pressure is low, and the species of Cu (Ⅰ) (CO) is related to the structural characteristics of molecular sieve. With the increase of CO pressure, some adsorbed species transform to Cu (Ⅰ) (CO) 2. Analysis of Cu (Ⅰ) (CO) fundamental frequency and group band can obtain Cu (Ⅰ) -C stretching vibration frequency which is more sensitive than C-O stretching vibration