载体、金属-载体相互作用与多相催化剂的制备

对多相(非均相)催化剂主要是Mo(w)Ni(Co)／A12O3加氢处理催化剂和PtRe／Al2O3催化重整催化剂的制备研究作一概述。讨论的重点集中在原子水平上研究载体的性质、金属一载体之间的相互作用，及其对载体和相应催化剂的表面性质或表面结构(形貌)的影响。除了采用TPR、DRS、ESCA、IR和微型反应色谱等技术之外，还采用了一种新的表面测试技术PASCA(Positron annihilation spectroscopy for chemical analysis)来表征这两类催化剂。基于这些研究结果，提出了开发新型加氢处理和催化重整催化剂的总体思路。

SUPPORT, METAL-SUPPORT INTERACTION AND PREPARATION OF HETEROGENEOUS CATALYSTS

This contribution is an attempt to make an overview in studying and preparing heterogeneous catalysts,particularly associating Mo(W)Ni(Co)/Al 2O 3 hydrotreating catalysts and PtRe/Al 2O 3 catalytic reforming catalysts. The discussion is centered on support,metal support interaction and their effects on the nature of surface phase (phases) or surface morphology of support and the related catalysts based on the atomic scale. A new surface technique,PASCA (Positron annihilation spectroscopy for chemical analysis),in conjunction with TPR,DRS,ESCA,IR,and model reactions of HDN,HDS and benzene converted from n hexane in a micro reactor,was used to characterize these two kinds of catalysts.Based on these results,general ideas for developing new hydrotreating and catalytic reforming catalysts are proposed.