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考察了离子交换方法和Mn~(2+)、Tl~+和Fe~(2+)共存阳离子对Cu(Ⅰ)-A沸石及其吸附性质的影响以及CO吸附动力学.离子交换方法不改变Cu(Ⅰ)-A沸石的CO、N_2吸附类型,但影响其吸附量.Mn~(2+)基本上未改变Cu(Ⅰ)-A沸石的吸附性质,而Tl~+和Fe~(2+)则产生显著影啊,其中Fe~(2+)使N_2吸附增强而不利于CO-N_2二元混合气体的分离.采用CuA、MnCuA和TlCuA型沸石,在25℃及2.94×10~5Pa压力下,可将CO从30%提浓到97～99%,CO回收率可达90%.CO在Cu(Ⅰ)-A沸石上的吸附为二级过程,其吸附热为63.5KJ/mol.讨论了CO吸附机理.
The effects of ion exchange and the coexistence of Mn 2+, Tl 2+ and Fe 2+ on the adsorption properties of Cu (Ⅰ) -A zeolites and their adsorption kinetics were investigated. The ion exchange method did not change Cu (Ⅰ) -A zeolite, but affect the adsorption capacity of Cu (Ⅰ) -A zeolite.Mn 2+ did not change the adsorption properties of Cu (Ⅰ) -A zeolite, while the adsorption of Tl ~ + and Fe ~ +) Produced a significant shadow, in which Fe ~ (2+) enhanced N 2 adsorption but not conducive to the separation of CO-N 2 binary mixed gas.Using CuA, MnCuA and TlCuA zeolites at 25 ℃ and 2.94 × 10 ~ 5 Pa Under the pressure, CO can be concentrated from 30% to 97 ~ 99% and the CO recovery up to 90% .The adsorption of CO on Cu (Ⅰ) -A zeolite is a secondary process with an adsorption heat of 63.5KJ / mol The CO adsorption mechanism is discussed.