催化剂活性组份在载体上的分布形式及其控制是催化剂制备过程中的一项基础研究工作。在制备多相催化剂的过程中,人们很早就重视活性组份在载体上均匀分布的问题,为此,对催化剂的制备的各个过程进行了大量的研究。近年来,发现除了活性组份分布的均匀性之外,催化剂活性组份在载体上的分布形式,或活性组份在载体不同区域 The distribution of catalyst active components on the support and its control is a basic research work in the preparation of catalyst. In the process of preparation of heterogeneous catalysts, the problem of uniform distribution of the active components on the support has long been emphasized. For this reason, a great deal of research has been carried out on the various processes of catalyst preparation. In recent years, it has been found that in addition to the uniformity of the distribution of the active components, the distribution of the active components of the catalyst on the support, or the distribution of the active components in different regions of the support