气-固表面多原子分子振动能量传递过程的新处理法

A New Procedure for Simulating the Energy Transfer Process of Multi-Atomic Molecules at the Gas-Solid Surface

气固振动能量传递过程新处理法的适用性巳被许多反应体系所证实。文中系统而简要地阐述了它的物理图象、基本假设和计算公式。所提新观点也有助于澄清诸如能量传递效率、催化作用本质和能量调节系数等概念。

The new idea about the energy transfer of multi-atomic molecules at the gas-solid surface has been introduced. A systematic and concise description has been given to its physical feature, basic assumptions and theoretical simulation procedures. The experimental data can be best fitted with one of three sorts of reaction probabilities P_m, P_(?) and P_t, based on two-dimensional Maxwellian, Boltzmannian and total distributions respectively. According to the new point of view, the following conclusions can be approached: (1) The energy transfer efficiency between gas and solid is always equal to 1. It does not change with temperature; (2) The origin of catalysis may be due to the great change of the energy distribution mode under the action of the large desorption potential energy, but not due to the changement of reaction path and the decrease of reaction threshold. (3) If theBoltzman distribution is stiH used for the standard of comparison, the changing region of the energy accommodation coefficients will locate between zero and infinity.