分子探针法研究NiO-Cr_(2)O_(3)-SiO_(2)和NiO-SiO_(2)体系催化剂的表面结构

The Study of the Surface Structure of the catalyst of the Systems NiO-Cr_(2)O_(3)-SiO_(3)NiO-SiO_(3)and by Using the Molecale Probe Method

本文用分子探针法测定、研究了NiO-Cr_(2)O_(3)-SiO_(2)和NiO-SiO_(2)催化剂的表面吸附中心结构,且通过逐步溶解分析、X-衍射法、TPD、磁分析等测试方法证实用该法所得结论的正确。表明这是一种研究催化剂表面吸附中心结构的新的有效方法。其特点是能在接近实际的反应条件下,快速、方便地获得催化剂表面吸附中心的结构信息。

This paper describes how the surface structure of the catalysts of the systems NiO-SiO_(3)and NiO-Cr_(2)O_(3)-SiO_(3)is studied and determined by using the molecule probe method.The conclusions obtained with the method have been verified to be correct by means of TPD,X-ray diffraction and magnetic analyses etc.And as a result the method is proved to be a new effective one for studing the surface structure.This method is characterized by rapidly gathering information about surface structure of adsorption centre of catalysts in a convenient way under Closely practical conditions of reaction.