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首页> 外文期刊>Separation and Purification Technology >Real-time monitoring of permeation properties through poly crystalline MFI-type zeolite membranes during pervaporation using mass-spectrometry
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Real-time monitoring of permeation properties through poly crystalline MFI-type zeolite membranes during pervaporation using mass-spectrometry

机译：使用质谱实时监测渗透过程中多晶MFI型沸石膜的渗透性能

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摘要

In this study,a system for the real-time monitoring(RTM)of pervaporation performances was developed to measure the permeation behaviors under the unsteady-state condition.By using a standard gas in combination with a mass spectrometer,the permeation behaviors during pervaporation could be simply,continuously,and sensitively monitored.By applying this system to a temperature-programmed pervaporation experiment,the effect of temperature on the permeation properties could be rapidly determined.In this study,the system was also used for monitoring the permeation behavior under the unsteady-state condition.As a result,the unique permeation behavior of water occurring early in the pervaporation experiments could be observed.This monitoring result suggests that the competitive adsorption,diffusion,and permeation routes of molecules are important for the permeation and separation performances of zeolite membranes.
机译：在这项研究中，开发了一种实时监测渗透性能的系统，以测量非稳态条件下的渗透行为。通过将标准气体与质谱仪结合使用，可以监测渗透过程中的渗透行为。通过将该系统应用于程序升温渗透蒸发实验，可以快速确定温度对渗透性能的影响。在这项研究中，该系统还用于监测在一定温度下的渗透行为。结果，可以观察到在渗透实验早期发生的水的独特渗透行为。该监测结果表明，分子的竞争性吸附，扩散和渗透途径对于水的渗透和分离性能至关重要。沸石膜。

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