关键词: 铬, 孔材料, 制备, 催化剂, 铬, 孔材料, 制备, 催化剂

Abstract: Supporting chromium onto carriers (porous materials) not only can remarkably improve the dispersion of chromium active sites and retain their oxidation states，but also make supported chromium-based catalysts show the inherent advantages of the carrier materials in the pore structure，strong acidity and excellent performance of molecular diffusion. As a result，supported Cr-based catalysts usually exhibit relative higher catalytic activity and are effectively applied in various catalytic processes. In this paper，the recent progress in synthetic methods and main applications of supported Cr-based catalysts are reviewed. Meanwhile，the influences of synthetic methods，the properties of carriers，metal precursors and additives on the amount，the dispersion degree and the coordination state of chromium species，and thus the pore structure，the catalytic properties and lifetime of supported Cr-based catalysts are discussed in detailed. In addition，it can be seen that there is an important research prospect in the future for supported Cr-based catalysts in adjusting the pore structure and surface acidity of carriers and the interactions between carriers and chromium active species to enhance the dispersion and the stability of chromium species existed in the carriers.

Key words: Cr, porous materials, synthesis, catalyst, chromium, porous materials, synthesis, catalyst