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首页> 外文期刊>Transport in Porous Media >Flux Response Technology (FRT) Applied in Zero Length Column Diffusivity and Adsorption Measurements
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Flux Response Technology (FRT) Applied in Zero Length Column Diffusivity and Adsorption Measurements

机译：通量响应技术（FRT）在零长度色谱柱扩散率和吸附率测量中的应用

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The adaptation of flux response technology (FRT) as a novel in situ perturbation technique in gas sorption measurements continues to yield consistent results with literature values. Earlier studies have successfully reported on the FRT-zero length column method of studying propane diffusivity within an alumina/CeZrOx washcoat as a function of temperature (Maguire et al. in Chem Eng Sci 87:224-233, 2013; Sasegbon and Hellgardt in Adsorption, 2012). This study details FRT's ability in quantifying and analysing the dynamic process of carbon dioxide () adsorption on zeolites with varying Si/Al ratios as well as measurements of diffusion coefficients without the need for running separate experiments. This is made possible because FRT measures miniscule changes in transient flows in the order of for gaseous processes involving a change in volume (). These changes are measured directly by a very sensitive differential pressure transducer in a pneumatic system analogous to an electrical Wheatstone bridge assembly, whereby gas molecules replace electrons and capillaries function as resistors.
机译：通量响应技术（FRT）在气体吸附测量中作为一种新颖的原位微扰技术的应用不断产生与文献值一致的结果。早期的研究成功地报道了FRT零长度柱法研究氧化铝/ CeZrOx涂层中丙烷扩散率随温度的变化（Maguire等人在Chem Eng Sci 87：224-233，2013; Sasegbon and Hellgardt in Adsorption ，2012）。这项研究详细介绍了FRT在无需进行单独实验的情况下，能够定量和分析二氧化碳（）在具有不同Si / Al比的沸石上吸附的动态过程以及测量扩散系数的能力。之所以能够做到这一点，是因为FRT在涉及体积变化的气态过程中按顺序测量瞬态流量的微小变化。这些变化是由类似于电子惠斯登电桥组件的气动系统中的一个非常灵敏的压差传感器直接测量的，其中气体分子代替电子，毛细管充当电阻器。

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