The frequency response (FR) method, a pseudo-steady state relaxation technique employing perturbation frequency, plays an essential role in discriminating between multi-kinetic mechanisms in microporous materials for separation and catalytic processes. Experimental and theoretical principles are reviewed for three frequency response methods, including one commonly used batch system with volume perturbation and two recently developed flow-through systems with pressure or concentration oscillation. Even though these methods have different overall transfer functions, they can be linked closely through the adsorbed-phase functions, which account for individual or coupling of mass transfer resistances and heat effects. Mass transfer resistances include micropore diffusion, macropore diffusion, surface barriers, and external film resistance. By judicious application of FR methods, it is not only possible to identify dominating mass transfer resistances but also to extract reliable mass transfer coefficients based on corresponding mathematical models. Representative examples to display the ability of the FR methods in studies of zeolites, carbon molecular sieves, and other microporous materials are discussed. Mixture studies and future developments, including nonlinear frequency response and chemical reactions, have also been briefly described.

频率响应（FR）方法是一种采用扰动频率的拟稳态松弛技术，在区分微孔材料中用于分离和催化过程的多种动力学机理中起着至关重要的作用。对三种频率响应方法的实验和理论原理进行了回顾，包括一种常用的具有体积扰动的批处理系统和两种最近开发的具有压力或浓度振荡的流通系统。即使这些方法具有不同的整体传递函数，它们也可以通过吸附相函数紧密连接，这说明了传质阻力和热效应的单独或耦合。传质阻力包括微孔扩散，大孔扩散，表面势垒和外部膜电阻。通过适当地应用FR方法，不仅可以识别主要的传质阻力，而且还可以根据相应的数学模型提取可靠的传质系数。讨论了展示FR方法在沸石，碳分子筛和其他微孔材料研究中的能力的代表性实例。还简要介绍了混合物研究和未来的发展，包括非线性频率响应和化学反应。讨论了其他微孔材料。还简要介绍了混合物研究和未来的发展，包括非线性频率响应和化学反应。讨论了其他微孔材料。还简要介绍了混合物研究和未来的发展，包括非线性频率响应和化学反应。