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化学反应有均相和复相之分,而绝大部分的重要反应都是复相的。在复相反应中,反应总是在界面上发生的。近年来,复相催化已成为化学研究的中心问题,但是因为涉及的界面一般都是固体的,这就使问题的解决大大复杂化;主要原因是真实固体的表面总是不均匀的,表面的不同位置所具有的能量或反应的活性不同。研究固体表面的另一困难是表面的性质极难
The chemical reactions are homogeneous and complex phase, and most of the important reactions are complex phase. In complex reactions, the reaction always occurs at the interface. In recent years, complex phase catalysis has become a central issue in chemical research, but since the interfaces involved are generally solid, this greatly complicates the solution of the problem; the main reason is that the surface of a real solid is always uneven and the surface Different locations have different energy or reaction activity. Another difficulty in studying solid surfaces is the extreme nature of the surface