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用惰性离子作射体与固体表面原子相互作用,在低能区(0.5～3keV),一般认为,主要是弹性碰撞。由电子云交迭所产生的电子效应往往可以忽略,或者说这类非弹性碰撞效应与弹性碰撞能量损失相比往往很小,实验上的能量分辨不足以探测这类非弹性效应即电子效应。本文选择氧化物和卤化物负载型催化剂体系并从实验上采取了一些方法,使由于电子效应而引起的散射惰性离子的能量损失可以得到分辨。众所周知,电子效应与化学键力密切相关。有人虽曾对由于电子效应等而引起被测元素原子的“质量”变化提出过“有效质量”的概念,但未发表过有关化学方面的工作。本文对MoO_3/TiO_2,MoO_3/γ-Al_2O_3,MoO_3/SiO_2,CuO/γ-Al_2O_3,CuCl/γ-Al_2O_3等催化剂体系进行了研究,发现由于电子效应而
With inert ions for the interaction of the projectile and the solid surface atoms, in the low energy region (0.5 ~ 3keV), is generally believed that the main elastic collision. The electronic effects caused by the overlap of electron clouds are often negligible. In other words, such inelastic collision effects are often very small compared to elastic collision energy losses. Experimental energy resolution is not enough to detect such inelastic effects, ie, electronic effects. In this paper, we choose oxide and halide supported catalyst system and experimentally adopt some methods to make the energy loss of scattering inert ions due to the electronic effect can be resolved. As we all know, electronic effects and chemical bonding are closely related. Although some people have proposed the concept of “effective mass” for the change of “mass” of the atoms of the element under test due to electronic effects and the like, no work on chemistry has been published. In this paper, the catalyst systems of MoO_3 / TiO_2, MoO_3 / γ-Al_2O_3, MoO_3 / SiO_2, CuO / γ-Al_2O_3 and CuCl / γ-Al_2O_3 have been studied and found that due to the electronic effect