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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Diffuse reflectance infrared fourier transform study of NO _x adsorption on CGO10 impregnated with K _2O or BaO
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Diffuse reflectance infrared fourier transform study of NO _x adsorption on CGO10 impregnated with K _2O or BaO

机译:NO _x在K _2O或BaO浸渍CGO10上的漫反射红外傅里叶变换研究。

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摘要

In the present work diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy is applied to study the adsorption of NO _x at 300-500 °C in different atmospheres on gadolinium-doped ceria (CGO), an important material in electrodes investigated for electrochemical NO _x removal. Furthermore, the effect on the NO _x adsorption when adding K _2O or BaO to the CGO is investigated. The DRIFT study shows mainly the presence of nitrate species at 500 °C, whereas at lower temperature a diversity of adsorbed NO x species exists on the CGO. The presence of O 2 is shown to have a strong effect on the adsorption of NO, but no effect on the adsorption of NO _2. Addition of K _2O and BaO dramatically affects the NO _x adsorption and the results also show that the adsorbed NO x species are mobile and capable of changing adsorption state in the investigated temperature range.
机译:在目前的工作中,使用漫反射红外傅里叶变换(DRIFT)光谱研究了掺杂二氧化铈(CGO)在300-500°C下在不同气氛中NO _x的吸附,,氧化铈是研究电化学NO _x的重要电极材料去除。此外,研究了向CGO中添加K _2O或BaO时对NO _x吸附的影响。 DRIFT研究表明,主要在500°C存在硝酸盐类,而在较低温度下,CGO上存在多种吸附的NO x种类。 O 2的存在对NO的吸附有很强的影响,但对NO _2的吸附没有影响。 K _2O和BaO的添加显着影响了NO _x的吸附,结果还表明,在研究的温度范围内,吸附的NO x物种是可移动的并且能够改变吸附状态。

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